

Sandostatin LAR 醋酸奥曲肽微球注射剂

通用中文 | 醋酸奥曲肽微球注射剂 | 通用外文 | Octreotide |
品牌中文 | 善龙 | 品牌外文 | Sandostatin LAR |
其他名称 | |||
公司 | 诺华(Novartis) | 产地 | 瑞士(Switzerland) |
含量 | octreotide acetate 20mg | 包装 | 1瓶/盒 |
剂型给药 | 储存 | 室温 | |
适用范围 | 肢端肥大症 |
通用中文 | 醋酸奥曲肽微球注射剂 |
通用外文 | Octreotide |
品牌中文 | 善龙 |
品牌外文 | Sandostatin LAR |
其他名称 | |
公司 | 诺华(Novartis) |
产地 | 瑞士(Switzerland) |
含量 | octreotide acetate 20mg |
包装 | 1瓶/盒 |
剂型给药 | |
储存 | 室温 |
适用范围 | 肢端肥大症 |
—— 药品说明书内容仅供参考 ——
药品名称
通用名称:醋酸奥曲肽注射液
英文名称:Octreotide Acetate Injection
汉语拼音:Cusuan Aoqutai Zhusheye
成份
本品活性成份为醋酸奥曲肽。
化学名称:D-苯丙氨酰-L-半胱氨酰-L-苯丙氨酰-D-色氨酰-L-赖氨酰-L-苏氨酰-N-[(1R,2R)]-2-羟基-1-(羟甲基)丙基]-L-半胱氨酰胺环(2→7)-二硫键醋酸盐。
化学结构式:
分子式:C49H66N10O10S2•xC2H4O2
分子量:1019.26•x60.02
辅料:乳酸、甘露醇、碳酸氢钠、注射用水。
性状
本品为无色的澄明液体。
适应症
控制手术治疗或放射治疗不能充分控制病情的肢端肥大症患者的症状并降低患者的生长激素(GH)和胰岛素样生长因子-1(IGF-1)血浆水平。本品也可治疗不能或不愿手术的肢端肥大症患者,或者治疗放射治疗尚未生效的间歇期肢端肥大症患者。
缓解与功能性胃肠胰腺(GEP)内分泌肿瘤有关的症状,如具有类癌综合征表现的类癌瘤。
本品不是抗癌药,不能治愈这些患者。
预防胰腺手术后并发症。
肝硬化患者胃-食管静脉曲张所致出血的紧急治疗,止血和预防再出血,本品应与内窥镜硬化剂等特殊治疗联用。
规格
按C49H66N10O10S2计(1)1ml:0.05mg(2)1ml:0.1mg
用法用量
肢端肥大症
开始每8小时或12小时皮下注射一次,每次0.05-0.1mg,然后每月依循环GH、IGF-1水平和临床反应及耐受性做相应调整(目标:GH小于2.5ng/ml;IGF正常范围)。多数病人每日最适剂量为0.2-0.3mg。对长期接受同一剂量治疗的病人每6个月测定一次GH浓度。
每日不得超过1.5mg的最大剂量,通过监测血浆GH水平,治疗数月后可酌情减量。
如果用药后1月内仍无GH水平的降低和无临床反应,应考虑停药。
胃肠胰内分泌肿瘤
最初皮下注射每日1-2次,每次0.05mg,根据临床反应和肿瘤分泌的激素浓度(在类癌的情况下,根据5-羟吲哚乙酸的尿液排泄量)以及耐受性,渐增至每次0.1-0.2mg,每日3次。个别病例可能需要更高的剂量。维持剂量因个体差异而定。
如果用药后1周内临床症状和实验室检查未改善,应停药。
预防胰腺手术后并发症
皮下注射每日3次,每次0.1mg,连续7天,第一次用药至少在术前1小时进行。
食管-胃静脉曲张出血
连续静脉滴注0.025mg/小时,最多治疗五天。本品可用生理盐水稀释。
在食管-胃静脉曲张出血的肝硬化患者中,可给予本品连续静脉滴注,0.05mg/小时持续5天。
特殊病人用药剂量
肝功能不全
肝硬化病人的药物半衰期延长,所以需要改变维持剂量。
肾功能不全
在需要透析的重度肾衰患者中,奥曲肽的半衰期可能延长,需要调整维持剂量。
不良反应
据文献报道
安全性特征总结
奥曲肽治疗期间最常报告的不良反应包括胃肠道疾病、神经系统疾病、肝胆疾病以及代谢和营养疾病。
奥曲肽临床试验中最常见的不良反应为腹泻、腹痛、恶心、胀气、头痛、胆石症、高血糖症和便秘。其他常见的不良反应为头晕、局部疼痛、胆泥形成、甲状腺功能障碍(如促甲状腺激素[TSH]降低、总T4降低和游离T4降低)、稀便、糖耐量受损、呕吐、无力和低血糖症。
临床研究中的不良反应列表
根据MedDRA系统器官分类在表1中列出了奥曲肽临床研究中的不良反应。
按照频率对药物不良反应进行排序,采用下列规定:十分常见(≥1/10)、常见(≥1/100,<1/10)、偶见(≥1/1000,<1/100)、罕见(≥1/10000,<1/1000)、十分罕见(<1/10000),包括个别报告。在各个频率组内,不良反应按照严重程度以降序排列。
表1 临床研究中报告的药物不良反应
内分泌疾病
常见:
甲状腺功能减退、甲状腺功能障碍(如TSH降低、总T4降低和游离T4降低)
代谢和营养障碍
十分常见:
高血糖症
常见:
低血糖症、糖耐量受损、厌食症
偶见:
脱水
神经系统疾病
十分常见:
头痛
常见:
头晕
心脏疾病
常见:
心动过缓
偶见:
心动过速
呼吸系统病变
常见:
呼吸困难
胃肠道疾病
十分常见:
腹泻、腹痛、恶心、便秘、胃肠气胀
常见:
消化不良、呕吐、腹胀、脂肪痢、松软便、粪便变色
肝胆疾病
十分常见:
胆石症
常见:
胆囊炎、胆泥形成、高胆红素血症
皮肤和皮下组织病变
常见:
瘙痒、皮疹、脱发
全身疾病和给药部位病变
十分常见:
注射部位反应
常见:
乏力
检查
常见:
转氨酶水平升高
其他不良事件
注射时疼痛报告率为7.7%。
其他不良事件(1%-4%)
在1%-4%的患者中各观察到的其他事件(未确定与药物的关系)包括疲乏、无力、关节痛、背部疼痛、尿路感染、感冒症状、流感症状、注射部位血肿、青肿、水肿、潮红、视物模糊、尿频、脂肪吸收不良、毛发脱落、视觉障碍和抑郁。
其他不良事件(<1%)
在不到1%的患者中报告且未确定与药物关系的事件包括:
胃肠道:肝炎、黄疸、肝酶升高、胃肠道出血、痔疮、阑尾炎、胃溃疡/消化性溃疡、胆囊息肉;
皮肤:蜂窝织炎、瘀点、荨麻疹、基底细胞癌;
肌肉骨骼:关节炎、关节渗液、肌肉痛、雷诺现象;
心血管:胸痛、呼吸短促、血栓性静脉炎、缺血、充血性心脏衰竭、高血压、高血压反应、心悸、直立性低血压;
中枢神经系统:焦虑、性欲降低、晕厥、震颤、惊厥发作、眩晕、贝尔氏麻痹、偏执、垂体卒中、眼内压升高、失忆症、听力损失、神经炎;
呼吸:感染性肺炎、肺结节、哮喘持续状态;
内分泌:乳溢、肾上腺功能减退、尿崩症、男性乳房增大、闭经、月经频发、月经频率少、阴道炎;
泌尿生殖:肾石症、血尿;
血液学:贫血、铁缺乏症、鼻衄;
其他:耳炎、过敏反应、CK升高、体重下降。
对20名接受至少6个月治疗患者进行评价,未能证明抗体滴度超过背景水平。然而,3名患者随后报告了醋酸奥曲肽注射液抗体滴度,导致2名患者中药物作用持续时间延长。一些接受醋酸奥曲肽注射液的患者报告了过敏样反应,包括速发过敏反应性休克。
上市后
表2中列出的不良反应来自自发报告和文献,不能可靠地确定频率或与药物暴露的因果关系。
在每个系统器官分类中,药物不良反应按严重程度降序排列。
表2来源于自发报告和文献的药物不良反应
血液和淋巴系统疾病
血小板减少
免疫系统疾病
过敏性反应、过敏/超敏反应
心脏器官疾病
心律失常
肝胆系统疾病
急性胰腺炎、急性肝炎(无胆汁淤积)、淤胆型肝炎、胆汁淤积、黄疸、胆汁淤积性黄疸、胆石症、胆囊炎、胆管炎和胰腺炎,有时需要进行胆囊切除术
皮肤和皮下组织病变
荨麻疹
检查
碱性磷酸酶水平升高、γ-谷氨酰转肽酶水平升高
胃肠系统疾病
肠梗阻
已有不良反应的描述
胃肠道疾病和营养
在罕见的病例中,胃肠道不良反应可能类似于急性肠梗阻,伴有进行性腹胀、严重上腹痛、腹部压痛和肌紧张。
已知胃肠道不良事件的发生频率随着继续治疗时间的推移而下降。
虽然检测到大便中脂肪排泄增多,但是目前并无证据表明长期使用奥曲肽会因吸收不良而导致营养不良。
可以通过在本品皮下注射给药前后避免进餐,即在两餐之间或睡觉前给药,来降低胃肠道不良反应的发生。
胆囊和相关事件
研究表明,生长抑素类似物抑制胆囊收缩,并减少胆汁分泌,这可能造成胆囊异常或胆泥。奥曲肽抑制胆囊收缩素的分泌,导致胆囊收缩能力下降,胆泥和结石形成的风险升高。估计奥曲肽治疗患者胆结石的发生率为15-30%,一般人群的发生率为5-20%。奥曲肽治疗患者的胆石症或胆泥大多数没有症状,对有症状的胆石症应采用胆酸溶石治疗或通过手术进行治疗。
注射部位反应
皮下注射部位疼痛、刺痛或烧灼感,伴有红肿,极少持续15分钟以上。可以通过在注射前使药液达到室温或采用浓溶液减少注射体积来减轻局部不适。
心脏器官疾病
心动过缓是一种使用生长抑素类似物的常见不良反应。在肢端肥大症和类癌综合征患者中,均观测到ECG变化如QT间期延长、电轴偏移、早期复极化、低电压、R/S转换、R波提前递增和非特异性ST-T波改变。尚未确定这些事件与奥曲肽的关系,因为这些患者大部分患有基础心脏疾病(见[注意事项])。
胰腺炎
长期接受奥曲肽皮下治疗的患者曾经报告胆石症引起的胰腺炎。在十分罕见的病例中,曾经报告在奥曲肽皮下注射治疗的前数小时或数天内发生急性胰腺炎,停药后恢复。
超敏和过敏反应
上市后有报告过发生超敏和变态反应。这些反应(如发生)最常影响皮肤,罕有影响口腔和呼吸道。曾有个别过敏性休克的报道。
血小板减少
血小板减少在上市后曾被报道,尤其是在接受奥曲肽静脉注射治疗的肝硬化患者中。不良反应在停止奥曲肽治疗后可逆。
禁忌
对奥曲肽或任一赋形剂过敏者禁用。
注意事项
皮下注射给药
对自行用药的病人,医生或护士必须给予正确指导。
药液应达到室温再用,以减少局部不适感。避免同一部位短期多次注射。
直到马上用药前方可打开本品的西林瓶。任何剩余不用的药液都应抛弃。
为防止污染,多剂药瓶不应穿刺超过10次。
静脉滴注
使用前应用肉眼观察是否有颜色改变和颗粒出现。
在无菌生理盐水或5%葡萄糖溶液中本品可保持理化性质稳定达24小时。但由于奥曲肽会影响葡萄糖体内平衡,故建议使用生理盐水而不用葡萄糖。尽管在25℃以下稀释药液可维持理化活性达24小时,但考虑到微生物的污染,配制好的药液应当立即使用。如果不立即使用,应保存于2-8℃的条件下。使用前药液需达到室温。重新配制药液、用溶媒稀释、冰箱保存直至用药结束时间不应超过24小时。
需静脉滴注本品时,通常应将0.5mg奥曲肽溶于60ml生理盐水中,并用输液泵滴注直到疗程结束。本品也可低浓度静滴。
需将本品置于儿童无法触及的地方。
注射用醋酸奥曲肽溶液中含有不超过1毫摩尔(23毫克)钠盐,因此基本上不含有钠。
本品在全胃肠外营养(TPN)溶液中是不稳定的。
药物相互作用
在与本品联合给药时,可能需要对药物如β阻滞剂、钙通道阻滞剂或控制液体和电解质平衡的药物进行剂量调整(见[注意事项])。
在与本品联合给药时,可能需要对胰岛素和降糖药进行剂量调整(见[注意事项])。
已经发现奥曲肽能够降低环孢菌素的肠吸收和延迟西咪替丁的肠吸收。
奥曲肽与溴隐亭联用给药可以增加溴隐亭的生物利用度。
仅有的少量已出版数据显示生长抑素类似物可能会降低已知通过细胞色素P450酶代谢的化合物的代谢清除率,这可能是由于其抑制生长激素分泌引起的。由于无法排除奥曲肽也可能具有此作用,因此,与其它主要通过CYP3A4代谢且治疗指数低的药物(如奎尼丁、特非那定)合用时应小心。
与放射性生长抑素类似物联合使用,生长抑素及其类似物如奥曲肽竞争性结合生长抑素受体,可以影响放射性生长抑素类似物的有效性。
儿童用药
醋酸奥曲肽用于儿童的经验有限。
老年用药
目前尚无醋酸奥曲肽治疗老年患者耐受性下降或需要改变剂量的证据。
贮藏
避光,密闭,在2-8℃保存。
说明书修订日期
核准日期:2010年05月07日
修改日期:2023年08月22日
孕妇和哺乳期妇女用药
妊娠
奥曲肽在妊娠妇女中使用的数据非常有限(不超过300例妊娠),且约1/3病例的妊娠结局不详。大部分报告是在奥曲肽上市使用后接收到的,50%以上来自肢端肥大症患者。大多数妇女是在妊娠的前三个月暴露于奥曲肽,剂量范围为皮下注射奥曲肽100-1200µg/天。在妊娠结局已知的病例中大约有4%报告了先天异常,未确定这些病例与奥曲肽存在因果关系。有一些病例在孕早期发生自然流产,另有一些病例接受了人工流产。
作为预防措施,妊娠期间最好避免使用本品(见[注意事项])。
哺乳
尚不清楚奥曲肽是否经人乳汁分泌。动物研究显示奥曲肽经乳汁分泌。本品治疗期间,患者不应哺乳。
生育能力
尚不清楚奥曲肽对人类生育能力是否有影响。
对驾驶和操控机器能力的影响
醋酸奥曲肽注射液对驾驶和操作机械能力没有影响,或者影响可以忽略不计。如果患者在醋酸奥曲肽治疗期间出现头晕、无力/疲劳或头痛,建议他们在驾驶或操作机械时应小心。
药物过量
据文献报道
在成人和儿童中报告醋酸奥曲肽注射液意外用药过量的数量有限。在成人中剂量范围2400-6000µg/天,通过连续输注(100-250µg/小时)或皮下注射(1500µg/天,每天3次)给药。报道的不良事件为心律失常、低血压、心脏停搏、脑缺氧、胰腺炎、肝脏脂肪变性、腹泻、无力、困倦、体重下降、肝肿大和乳酸酸中毒。有报道醋酸奥曲肽注射液高剂量持续输注(100µg/h)和/或静脉推注(50µg静脉推注后50µg/h持续输注)后,出现房室传导阻滞(包括完全性房室传导阻滞)的情况。
在儿童中,剂量范围为50-3000µg/天,通过连续输注(2.1-500µg/小时)或皮下注射(50-100µg)给药。儿童患者用药过量,唯一报告的不良事件为轻度的高血糖症。
对过量用药者采取对症治疗。接受高于推荐静脉给药剂量奧曲肽的病人有更高出现高度房室传导阻滞的风险,应该给予适当心脏监测措施。
药理毒理
药理作用
奥曲肽是人工合成的天然生长抑素的八肽行生物,其药理作用与生长抑素相似,对生长激素(GH)、胰高血糖素和胰岛素的抑制作用比生长抑素更强。奥曲肽抑制促黄体生成素对促性腺激素释放激素的反应,降低内脏血流量,抑制胃肠胰(GEP)内分泌系统肽类激素(胃泌素、血管活性肠肽、促胰液素、胃动素和胰多肽)和5-羟色胺的释放。
毒理研究
遗传毒性:动物试验未见奥曲肽遗传毒性。
生殖毒性:大鼠给予奥曲肽剂量达1mg/kg/天,剂量按体表面积计算相当于人暴露量的7倍,对大鼠生育力未见影响。大鼠和兔给予奥曲肽,剂量按体表面积计算相当于人用最高推荐剂量的16倍,对胎仔未见影响。
致癌性:小鼠连续85-99周皮下注射奥曲肽,剂量高达2mg/kg/天(按体表面积计算约为人暴露量的8倍),未见致癌作用。大鼠皮下注射给予奥曲肽,最高剂量为1.25mg/kg/天(按体表面积计算约为人暴露量的10倍),雄性和雌性大鼠注射部位肉瘤和鳞状细胞癌的发生率分别为27%和12%,溶剂对照组发生率为8%-10%。注射部位肿瘤发病率增加可能是由于大鼠对在同一部位反复皮下注射的刺激性和高敏感性所致。轮换注射部位可避免对人体的慢性刺激。在连续使用奥曲肽长达5年的患者中,尚无注射部位肿瘤发生的报告。1.25mg/kg/天组中,雌性动物子宫腺癌的发生率为15%,而生理盐水对照组为7%,溶剂对照组为0%。子宫内膜炎伴黄体缺失、乳腺纤维腺瘤减少以及子宫扩张的发生,提示子宫肿瘤与老年雌性大鼠中雌激素占优势相关。
药代动力学
据文献报道
吸收
醋酸奥曲肽皮下注射后吸收迅速且完全,30分钟内血浆浓度达到峰值。
分布
分布容积是0.27L/kg,总体清除率是每分钟160ml,血浆蛋白结合率达65%,与血细胞结合的本品可忽略不计。
消除
皮下注射给药的消除半衰期为100分钟。静脉注射后其消除呈双相,半衰期分别为10分钟和90分钟。大部分肽经粪便排泄,约32%在尿中以原型排出。
特殊患者人群
在肾功能损害患者中,奥曲肽的血浆消除时间延长,全身清除率降低。轻度肾功能损害(肌酐清除率为40-60毫升/分钟)中,奥曲肽的t1/2为2.4小时,全身清除率为8.8升/小时;中度肾功能损害(肌酐清除率为10-39毫升/分钟)中,t1/2为3.0小时,全身清除率为7.3升/小时;以及在不需要透析的重度肾功能损害患者(肌酐清除率<10毫升/分钟)中,t1/2为3.1小时,全身清除率为7.6升/小时。在需要透析的重度肾衰患者中,全身清除率降至健康受试者的约一半(从约10升/小时降至4.5升/小时)。肝硬化,而非脂肪肝,可能会使患者的消除能力下降。
octreotide (injection)
Generic Name: octreotide (injection) (ok TREE oh tide)
Brand Name: SandoSTATIN, SandoSTATIN LAR Depot
Generic Name: Octreotide acetate
Dosage Form: injection, solution
Sandostatin Description
Sandostatin® (octreotide acetate) Injection, a cyclic octapeptide prepared as a clear sterile solution of octreotide, acetate salt, in a buffered lactic acid solution for administration by deep subcutaneous (intrafat) or intravenous injection. Octreotide acetate, known chemically as L-Cysteinamide, D-phenylalanyl-L-cysteinyl-L-phenylalanyl-D-tryptophyl-L-lysyl-L-threonyl-N-[2-hydroxy-1-(hydroxymethyl)propyl]-, cyclic (2→7)-disulfide; [R-(R*, R*)] acetate salt, is a long-acting octapeptide with pharmacologic actions mimicking those of the natural hormone somatostatin.
Sandostatin Injection is available as: sterile 1-mL ampuls in 3 strengths, containing 50, 100, or 500 mcg octreotide (as acetate), and sterile 5-mL multi-dose vials in 2 strengths, containing 200 and 1000 mcg/mL of octreotide (as acetate).
Each ampul also contains:
lactic acid, USP 3.4 mg
mannitol, USP 45 mg
sodium bicarbonate, USP qs to pH 4.2 ± 0.3
water for injection, USP qs to 1 mL
Each mL of the multi-dose vials also contains:
lactic acid, USP 3.4 mg
mannitol, USP 45 mg
phenol, USP 5.0 mg
sodium bicarbonate, USP qs to pH 4.2 ± 0.3
water for injection, USP qs to 1 mL
Lactic acid and sodium bicarbonate are added to provide a buffered solution, pH to 4.2 ± 0.3.
The molecular weight of octreotide acetate is 1019.3 (free peptide, C49H66N10O10S2) and its amino acid sequence is:
Sandostatin - Clinical Pharmacology
Sandostatin® (octreotide acetate) exerts pharmacologic actions similar to the natural hormone, somatostatin. It is an even more potent inhibitor of growth hormone, glucagon, and insulin than somatostatin. Like somatostatin, it also suppresses LH response to GnRH, decreases splanchnic blood flow, and inhibits release of serotonin, gastrin, vasoactive intestinal peptide, secretin, motilin, and pancreatic polypeptide.
By virtue of these pharmacological actions, Sandostatin has been used to treat the symptoms associated with metastatic carcinoid tumors (flushing and diarrhea), and Vasoactive Intestinal Peptide (VIP) secreting adenomas (watery diarrhea).
Sandostatin substantially reduces growth hormone and/or IGF-I (somatomedin C) levels in patients with acromegaly.
Single doses of Sandostatin have been shown to inhibit gallbladder contractility and to decrease bile secretion in normal volunteers. In controlled clinical trials the incidence of gallstone or biliary sludge formation was markedly increased (see WARNINGS).
Sandostatin suppresses secretion of thyroid stimulating hormone (TSH).
Pharmacokinetics
After subcutaneous injection, octreotide is absorbed rapidly and completely from the injection site. Peak concentrations of 5.2 ng/mL (100-mcg dose) were reached 0.4 hours after dosing. Using a specific radioimmunoassay, intravenous and subcutaneous doses were found to be bioequivalent. Peak concentrations and area under the curve values were dose proportional after intravenous single doses up to 200 mcg and subcutaneous single doses up to 500 mcg and after subcutaneous multiple doses up to 500 mcg t.i.d. (1500 mcg/day).
In healthy volunteers the distribution of octreotide from plasma was rapid (tα1/2 = 0.2 h), the volume of distribution (Vdss) was estimated to be 13.6 L, and the total body clearance ranged from 7 L/hr to 10 L/hr. In blood, the distribution into the erythrocytes was found to be negligible and about 65% was bound in the plasma in a concentration-independent manner. Binding was mainly to lipoprotein and, to a lesser extent, to albumin.
The elimination of octreotide from plasma had an apparent half-life of 1.7 to 1.9 hours compared with 1-3 minutes with the natural hormone. The duration of action of Sandostatin is variable but extends up to 12 hours depending upon the type of tumor. About 32% of the dose is excreted unchanged into the urine. In an elderly population, dose adjustments may be necessary due to a significant increase in the half-life (46%) and a significant decrease in the clearance (26%) of the drug.
In patients with acromegaly, the pharmacokinetics differ somewhat from those in healthy volunteers. A mean peak concentration of 2.8 ng/mL (100-mcg dose) was reached in 0.7 hours after subcutaneous dosing. The volume of distribution (Vdss) was estimated to be 21.6 ± 8.5 L and the total body clearance was increased to 18 L/h. The mean percent of the drug bound was 41.2%. The disposition and elimination half-lives were similar to normals.
In patients with renal impairment the elimination of octreotide from plasma was prolonged and total body clearance reduced. In mild renal impairment (ClCR 40-60 mL/min) octreotide t1/2 was 2.4 hours and total body clearance was 8.8 L/hr, in moderate impairment (ClCR 10-39 mL/min) t1/2 was 3.0 hours and total body clearance 7.3 L/hr, and in severely renally impaired patients not requiring dialysis (ClCR<10 mL/min) t1/2 was 3.1 hours and total body clearance was 7.6 L/hr. In patients with severe renal failure requiring dialysis, total body clearance was reduced to about half that found in healthy subjects (from approximately 10 L/hr to 4.5 L/hr).
Patients with liver cirrhosis showed prolonged elimination of drug, with octreotide t1/2 increasing to 3.7 hr and total body clearance decreasing to 5.9 L/hr, whereas patients with fatty liver disease showed t1/2increased to 3.4 hr and total body clearance of 8.2 L/hr.
Indications and Usage for SandostatinAcromegaly
Sandostatin® (octreotide acetate) is indicated to reduce blood levels of growth hormone and IGF-I (somatomedin C) in acromegaly patients who have had inadequate response to or cannot be treated with surgical resection, pituitary irradiation, and bromocriptine mesylate at maximally tolerated doses. The goal is to achieve normalization of growth hormone and IGF-I (somatomedin C) levels (see DOSAGE AND ADMINISTRATION). In patients with acromegaly, Sandostatin reduces growth hormone to within normal ranges in 50% of patients and reduces IGF-I (somatomedin C) to within normal ranges in 50%-60% of patients. Since the effects of pituitary irradiation may not become maximal for several years, adjunctive therapy with Sandostatin to reduce blood levels of growth hormone and IGF-I (somatomedin C) offers potential benefit before the effects of irradiation are manifested.
Improvement in clinical signs and symptoms or reduction in tumor size or rate of growth were not shown in clinical trials performed with Sandostatin; these trials were not optimally designed to detect such effects.
Carcinoid Tumors
Sandostatin is indicated for the symptomatic treatment of patients with metastatic carcinoid tumors where it suppresses or inhibits the severe diarrhea and flushing episodes associated with the disease.
Sandostatin studies were not designed to show an effect on the size, rate of growth or development of metastases.
Vasoactive Intestinal Peptide Tumors (VIPomas)
Sandostatin is indicated for the treatment of the profuse watery diarrhea associated with VIP-secreting tumors. Sandostatin studies were not designed to show an effect on the size, rate of growth or development of metastases.
Contraindications
Sensitivity to this drug or any of its components.
Warnings
Single doses of Sandostatin® (octreotide acetate) have been shown to inhibit gallbladder contractility and decrease bile secretion in normal volunteers. In clinical trials (primarily patients with acromegaly or psoriasis), the incidence of biliary tract abnormalities was 63% (27% gallstones, 24% sludge without stones, 12% biliary duct dilatation). The incidence of stones or sludge in patients who received Sandostatin for 12 months or longer was 52%. Less than 2% of patients treated with Sandostatin for 1 month or less developed gallstones. The incidence of gallstones did not appear related to age, sex or dose. Like patients without gallbladder abnormalities, the majority of patients developing gallbladder abnormalities on ultrasound had gastrointestinal symptoms. The symptoms were not specific for gallbladder disease. A few patients developed acute cholecystitis, ascending cholangitis, biliary obstruction, cholestatic hepatitis, or pancreatitis during Sandostatin therapy or following its withdrawal. One patient developed ascending cholangitis during Sandostatin therapy and died.
PrecautionsGeneral
Sandostatin® (octreotide acetate) alters the balance between the counter-regulatory hormones, insulin, glucagon and growth hormone, which may result in hypoglycemia or hyperglycemia. Sandostatin also suppresses secretion of thyroid stimulating hormone, which may result in hypothyroidism. Cardiac conduction abnormalities have also occurred during treatment with Sandostatin. However, the incidence of these adverse events during long-term therapy was determined vigorously only in acromegaly patients who, due to their underlying disease and/or the subsequent treatment they receive, are at an increased risk for the development of diabetes mellitus, hypothyroidism, and cardiovascular disease. Although the degree to which these abnormalities are related to Sandostatin therapy is not clear, new abnormalities of glycemic control, thyroid function and ECG developed during Sandostatin therapy as described below.
Risk of Pregnancy with Normalization of IGF-1 and GH
Although acromegaly may lead to infertility, there are reports of pregnancy in acromegalic women. In women with active acromegaly who have been unable to become pregnant, normalization of GH and IGF-1 may restore fertility. Female patients of childbearing potential should be advised to use adequate contraception during treatment with octreotide.
The hypoglycemia or hyperglycemia which occurs during Sandostatin therapy is usually mild, but may result in overt diabetes mellitus or necessitate dose changes in insulin or other hypoglycemic agents. Hypoglycemia and hyperglycemia occurred on Sandostatin in 3% and 16% of acromegalic patients, respectively. Severe hyperglycemia, subsequent pneumonia, and death following initiation of Sandostatin therapy was reported in one patient with no history of hyperglycemia.
In patients with concomitant Type I diabetes mellitus, Sandostatin Injection and Sandostatin LAR® Depot (octreotide acetate for injectable suspension) are likely to affect glucose regulation, and insulin requirements may be reduced. Symptomatic hypoglycemia, which may be severe, has been reported in these patients. In non-diabetics and Type II diabetics with partially intact insulin reserves, Sandostatin Injection or Sandostatin LAR Depot administration may result in decreases in plasma insulin levels and hyperglycemia. It is therefore recommended that glucose tolerance and antidiabetic treatment be periodically monitored during therapy with these drugs.
In acromegalic patients, 12% developed biochemical hypothyroidism only, 8% developed goiter, and 4% required initiation of thyroid replacement therapy while receiving Sandostatin. Baseline and periodic assessment of thyroid function (TSH, total and/or free T4) is recommended during chronic therapy.
In acromegalics, bradycardia (<50 bpm) developed in 25%; conduction abnormalities occurred in 10% and arrhythmias occurred in 9% of patients during Sandostatin therapy. Other EKG changes observed included QT prolongation, axis shifts, early repolarization, low voltage, R/S transition, and early R wave progression. These ECG changes are not uncommon in acromegalic patients. Dose adjustments in drugs such as beta-blockers that have bradycardia effects may be necessary. In one acromegalic patient with severe congestive heart failure, initiation of Sandostatin therapy resulted in worsening of CHF with improvement when drug was discontinued. Confirmation of a drug effect was obtained with a positive rechallenge.
Several cases of pancreatitis have been reported in patients receiving Sandostatin therapy.
Sandostatin may alter absorption of dietary fats in some patients.
In patients with severe renal failure requiring dialysis, the half-life of Sandostatin may be increased, necessitating adjustment of the maintenance dosage.
Depressed vitamin B12 levels and abnormal Schilling’s tests have been observed in some patients receiving Sandostatin therapy, and monitoring of vitamin B12 levels is recommended during chronic Sandostatin therapy.
Information for Patients
Careful instruction in sterile subcutaneous injection technique should be given to the patients and to other persons who may administer Sandostatin Injection.
Laboratory Tests
Laboratory tests that may be helpful as biochemical markers in determining and following patient response depend on the specific tumor. Based on diagnosis, measurement of the following substances may be useful in monitoring the progress of therapy:
Acromegaly: Growth Hormone, IGF-I (somatomedin C) Responsiveness to Sandostatin may be evaluated by determining growth hormone levels at 1-4 hour intervals for 8-12 hours post dose. Alternatively, a single measurement of IGF-I (somatomedin C) level may be made two weeks after drug initiation or dosage change.
Carcinoid: 5-HIAA (urinary 5-hydroxyindole acetic acid), plasma serotonin, plasma Substance P
VIPoma: VIP (plasma vasoactive intestinal peptide)
Baseline and periodic total and/or free T4 measurements should be performed during chronic therapy (see PRECAUTIONS – General).
Drug Interactions
Sandostatin has been associated with alterations in nutrient absorption, so it may have an effect on absorption of orally administered drugs. Concomitant administration of Sandostatin with cyclosporine may decrease blood levels of cyclosporine and result in transplant rejection.
Patients receiving insulin, oral hypoglycemic agents, beta blockers, calcium channel blockers, or agents to control fluid and electrolyte balance, may require dose adjustments of these therapeutic agents.
Concomitant administration of octreotide and bromocriptine increases the availability of bromocriptine. Limited published data indicate that somatostatin analogs might decrease the metabolic clearance of compounds known to be metabolized by cytochrome P450 enzymes, which may be due to the suppression of growth hormones. Since it cannot be excluded that octreotide may have this effect, other drugs mainly metabolized by CYP3A4 and which have a low therapeutic index (e.g., quinidine, terfenadine) should therefore be used with caution.
Drug Laboratory Test Interactions
No known interference exists with clinical laboratory tests, including amine or peptide determinations.
Carcinogenesis/Mutagenesis/Impairment of Fertility
Studies in laboratory animals have demonstrated no mutagenic potential of Sandostatin.
No carcinogenic potential was demonstrated in mice treated subcutaneously for 85-99 weeks at doses up to 2000 mcg/kg/day (8x the human exposure based on body surface area). In a 116-week subcutaneous study in rats, a 27% and 12% incidence of injection site sarcomas or squamous cell carcinomas was observed in males and females, respectively, at the highest dose level of 1250 mcg/kg/day (10x the human exposure based on body surface area) compared to an incidence of 8%-10% in the vehicle-control groups. The increased incidence of injection site tumors was most probably caused by irritation and the high sensitivity of the rat to repeated subcutaneous injections at the same site. Rotating injection sites would prevent chronic irritation in humans. There have been no reports of injection site tumors in patients treated with Sandostatin for up to 5 years. There was also a 15% incidence of uterine adenocarcinomas in the 1250 mcg/kg/day females compared to 7% in the saline-control females and 0% in the vehicle-control females. The presence of endometritis coupled with the absence of corpora lutea, the reduction in mammary fibroadenomas, and the presence of uterine dilatation suggest that the uterine tumors were associated with estrogen dominance in the aged female rats which does not occur in humans.
Sandostatin did not impair fertility in rats at doses up to 1000 mcg/kg/day, which represents 7x the human exposure based on body surface area.
Pregnancy Category B
There are no adequate and well-controlled studies of octreotide use in pregnant women. Reproduction studies have been performed in rats and rabbits at doses up to 16 times the highest recommended human dose based on body surface area and revealed no evidence of harm to the fetus due to octreotide. However, because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.
In postmarketing data, a limited number of exposed pregnancies have been reported in patients with acromegaly. Most women were exposed to octreotide during the first trimester of pregnancy at doses ranging from 100-300 mcg/day of Sandostatin s.c. or 20-30 mg/month of Sandostatin LAR, however some women elected to continue octreotide therapy throughout pregnancy. In cases with a known outcome, no congenital malformations were reported.
Nursing Mothers
It is not known whether octreotide is excreted into human milk. Because many drugs are excreted in human milk, caution should be exercised when octreotide is administered to a nursing woman.
Pediatric Use
Safety and efficacy of Sandostatin Injection in the pediatric population have not been demonstrated.
No formal controlled clinical trials have been performed to evaluate the safety and effectiveness of Sandostatin in pediatric patients under age 6 years. In post-marketing reports, serious adverse events, including hypoxia, necrotizing enterocolitis, and death, have been reported with Sandostatin use in children, most notably in children under 2 years of age. The relationship of these events to octreotide has not been established as the majority of these pediatric patients had serious underlying co-morbid conditions.
The efficacy and safety of Sandostatin using the Sandostatin LAR Depot formulation was examined in a single randomized, double-blind, placebo-controlled, six–month pharmacokinetics study in 60 pediatric patients age 6-17 years with hypothalamic obesity resulting from cranial insult. The mean octreotide concentration after 6 doses of 40 mg Sandostatin LAR Depot administered by IM injection every four weeks was approximately 3 ng/ml. Steady-state concentrations was achieved after 3 injections of a 40 mg dose. Mean BMI increased 0.1 kg/m2 in Sandostatin LAR Depot-treated subjects compared to 0.0 kg/m2 in saline control-treated subjects. Efficacy was not demonstrated. Diarrhea occurred in 11 of 30 (37%) patients treated with Sandostatin LAR Depot. No unexpected adverse events were observed. However, with Sandostatin LAR Depot 40 mg once a month, the incidence of new cholelithiasis in this pediatric population (33%) was higher than that seen in other adults indications such as acromegaly (22%) or malignant carcinoid syndrome (24%), where Sandostatin LAR Depot was 10 to 30 mg once a month.
Geriatric Use
Clinical studies of Sandostatin did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.
Adverse ReactionsGallbladder Abnormalities
Gallbladder abnormalities, especially stones and/or biliary sludge, frequently develop in patients on chronic Sandostatin® (octreotide acetate) therapy (see WARNINGS).
Cardiac
In acromegalics, sinus bradycardia (<50 bpm) developed in 25%; conduction abnormalities occurred in 10% and arrhythmias developed in 9% of patients during Sandostatin therapy (see PRECAUTIONS – General).
Gastrointestinal
Diarrhea, loose stools, nausea and abdominal discomfort were each seen in 34%-61% of acromegalic patients in U.S. studies although only 2.6% of the patients discontinued therapy due to these symptoms. These symptoms were seen in 5%-10% of patients with other disorders.
The frequency of these symptoms was not dose-related, but diarrhea and abdominal discomfort generally resolved more quickly in patients treated with 300 mcg/day than in those treated with 750 mcg/day. Vomiting, flatulence, abnormal stools, abdominal distention, and constipation were each seen in less than 10% of patients.
In rare instances, gastrointestinal side effects may resemble acute intestinal obstruction, with progressive abdominal distension, severe epigastric pain, abdominal tenderness and guarding.
Hypo/Hyperglycemia
Hypoglycemia and hyperglycemia occurred in 3% and 16% of acromegalic patients, respectively, but only in about 1.5% of other patients. Symptoms of hypoglycemia were noted in approximately 2% of patients.
Hypothyroidism
In acromegalics, biochemical hypothyroidism alone occurred in 12% while goiter occurred in 6% during Sandostatin therapy (see PRECAUTIONS – General). In patients without acromegaly, hypothyroidism has only been reported in several isolated patients and goiter has not been reported.
Other Adverse Events
Pain on injection was reported in 7.7%, headache in 6% and dizziness in 5%. Pancreatitis was also observed (see WARNINGS and PRECAUTIONS).
Other Adverse Events 1%-4%
Other events (relationship to drug not established), each observed in 1%-4% of patients, included fatigue, weakness, pruritus, joint pain, backache, urinary tract infection, cold symptoms, flu symptoms, injection site hematoma, bruise, edema, flushing, blurred vision, pollakiuria, fat malabsorption, hair loss, visual disturbance and depression.
Other Adverse Events <1%
Events reported in less than 1% of patients and for which relationship to drug is not established are listed: Gastrointestinal: hepatitis, jaundice, increase in liver enzymes, GI bleeding, hemorrhoids, appendicitis, gastric/peptic ulcer, gallbladder polyp; Integumentary: rash, cellulitis, petechiae, urticaria, basal cell carcinoma; Musculoskeletal: arthritis, joint effusion, muscle pain, Raynaud’s phenomenon; Cardiovascular: chest pain, shortness of breath, thrombophlebitis, ischemia, congestive heart failure, hypertension, hypertensive reaction, palpitations, orthostatic BP decrease, tachycardia; CNS: anxiety, libido decrease, syncope, tremor, seizure, vertigo, Bell’s Palsy, paranoia, pituitary apoplexy, increased intraocular pressure, amnesia, hearing loss, neuritis; Respiratory: pneumonia, pulmonary nodule, status asthmaticus; Endocrine: galactorrhea, hypoadrenalism, diabetes insipidus, gynecomastia, amenorrhea, polymenorrhea, oligomenorrhea, vaginitis; Urogenital: nephrolithiasis, hematuria; Hematologic: anemia, iron deficiency, epistaxis; Miscellaneous: otitis, allergic reaction, increased CK, weight loss.
Evaluation of 20 patients treated for at least 6 months has failed to demonstrate titers of antibodies exceeding background levels. However, antibody titers to Sandostatin were subsequently reported in three patients and resulted in prolonged duration of drug action in two patients. Anaphylactoid reactions, including anaphylactic shock, have been reported in several patients receiving Sandostatin.
Postmarketing Experience
The following adverse reactions have been identified during the postapproval use of Sandostatin. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
Gastrointestinal: intestinal obstruction
Hematologic: thrombocytopenia
Overdosage
A limited number of accidental overdoses of Sandostatin® in adults have been reported. In adults, the doses ranged from 2,400–6,000 micrograms/day administered by continuous infusion (100-250 micrograms/hour) or subcutaneously (1,500 micrograms t.i.d.). Adverse events in some patients included arrhythmia, hypotension, cardiac arrest, brain hypoxia, pancreatitis, hepatitis steatosis, hepatomegaly, lactic acidosis, flushing, diarrhea, lethargy, weakness, and weight loss.
Sandostatin Injection given in intravenous boluses of 1 mg (1000 mcg) to healthy volunteers did not result in serious ill effects, nor did doses of 30 mg (30,000 mcg) given intravenously over 20 minutes and of 120 mg (120,000 mcg) given intravenously over 8 hours to research patients.
If overdose occurs, symptomatic management is indicated. Up-to-date information about the treatment of overdose can often be obtained from the National Poison Control Center at 1-800-222-1222.
Drug Abuse and Dependence
There is no indication that Sandostatin has potential for drug abuse or dependence. Sandostatin levels in the central nervous system are negligible, even after doses up to 30,000 mcg.
Sandostatin Dosage and Administration
Sandostatin® (octreotide acetate) may be administered subcutaneously or intravenously. Subcutaneous injection is the usual route of administration of Sandostatin for control of symptoms. Pain with subcutaneous administration may be reduced by using the smallest volume that will deliver the desired dose. Multiple subcutaneous injections at the same site within short periods of time should be avoided. Sites should be rotated in a systematic manner.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration. Do not use if particulates and/or discoloration are observed. Proper sterile technique should be used in the preparation of parenteral admixtures to minimize the possibility of microbial contamination. Sandostatin is not compatible in Total Parenteral Nutrition (TPN) solutions because of the formation of a glycosyl octreotide conjugate which may decrease the efficacy of the product.
Sandostatin is stable in sterile isotonic saline solutions or sterile solutions of dextrose 5% in water for 24 hours. It may be diluted in volumes of 50-200 mL and infused intravenously over 15-30 minutes or administered by IV push over 3 minutes. In emergency situations (e.g., carcinoid crisis) it may be given by rapid bolus.
The initial dosage is usually 50 mcg administered twice or three times daily. Upward dose titration is frequently required. Dosage information for patients with specific tumors follows.
Acromegaly
Dosage may be initiated at 50 mcg t.i.d. Beginning with this low dose may permit adaptation to adverse gastrointestinal effects for patients who will require higher doses. IGF-I (somatomedin C) levels every 2 weeks can be used to guide titration. Alternatively, multiple growth hormone levels at 0-8 hours after Sandostatin® (octreotide acetate) administration permit more rapid titration of dose. The goal is to achieve growth hormone levels less than 5 ng/mL or IGF-I (somatomedin C) levels less than 1.9 U/mL in males and less than 2.2 U/mL in females. The dose most commonly found to be effective is 100 mcg t.i.d., but some patients require up to 500 mcg t.i.d. for maximum effectiveness. Doses greater than 300 mcg/day seldom result in additional biochemical benefit, and if an increase in dose fails to provide additional benefit, the dose should be reduced. IGF-I (somatomedin C) or growth hormone levels should be re-evaluated at 6-month intervals.
Sandostatin should be withdrawn yearly for approximately 4 weeks from patients who have received irradiation to assess disease activity. If growth hormone or IGF-I (somatomedin C) levels increase and signs and symptoms recur, Sandostatin therapy may be resumed.
Carcinoid Tumors
The suggested daily dosage of Sandostatin during the first 2 weeks of therapy ranges from 100-600 mcg/day in 2-4 divided doses (mean daily dosage is 300 mcg). In the clinical studies, the median daily maintenance dosage was approximately 450 mcg, but clinical and biochemical benefits were obtained in some patients with as little as 50 mcg, while others required doses up to 1500 mcg/day. However, experience with doses above 750 mcg/day is limited.
VIPomas
Daily dosages of 200-300 mcg in 2-4 divided doses are recommended during the initial 2 weeks of therapy (range 150-750 mcg) to control symptoms of the disease. On an individual basis, dosage may be adjusted to achieve a therapeutic response, but usually doses above 450 mcg/day are not required.
How is Sandostatin Supplied
Sandostatin® (octreotide acetate) Injection is available in 1-mL ampuls and 5-mL multi-dose vials as follows:
Ampuls
50 mcg/mL octreotide (as acetate)
Package of 10 ampuls NDC 0078-0180-01
100 mcg/mL octreotide (as acetate)
Package of 10 ampuls NDC 0078-0181-01
500 mcg/mL octreotide (as acetate)
Package of 10 ampuls NDC 0078-0182-01
Multi-Dose Vials
200 mcg/mL octreotide (as acetate)
Box of one NDC 0078-0183-25
1000 mcg/mL octreotide (as acetate)
Box of one NDC 0078-0184-25
Storage
For prolonged storage, Sandostatin ampuls and multi-dose vials should be stored at refrigerated temperatures 2ºC-8ºC (36ºF-46ºF) and store in outer carton in order to protect from light. At room temperature, (20ºC-30ºC or 70ºF-86ºF), Sandostatin is stable for 14 days if protected from light. The solution can be allowed to come to room temperature prior to administration. Do not warm artificially. After initial use, multiple-dose vials should be discarded within 14 days. Ampuls should be opened just prior to administration and the unused portion discarded. Dispose unused product or waste properly.
Manufactured by:
Novartis Pharma Stein AG
Stein, Switzerland
Distributed by:
Novartis Pharmaceuticals Corporation
East Hanover, NJ 07936
© Novartis
T2012-71
March 2012
PRINCIPAL DISPLAY PANEL
Package Label – 50 mcg/mL
Rx Only NDC 0078-0180-01
Sandostatin® Injection
octreotide acetate
50 mcg/mL (0.05 mg/mL)
For Subcutaneous Injection
10 Ampules/1 mL size
PRINCIPAL DISPLAY PANEL
Package Label – 100 mcg/mL
Rx Only NDC 0078-0181-01
Sandostatin® Injection
octreotide acetate
100 mcg/mL (0.1 mg/mL)
For Subcutaneous Injection
10 Ampules/1 mL size
PRINCIPAL DISPLAY PANEL
Package Label – 500 mcg/mL
Rx Only NDC 0078-0182-01
Sandostatin® Injection
octreotide acetate
500 mcg/mL (0.5 mg/mL)
For Subcutaneous Injection
10 Ampules/1 mL size
PRINCIPAL DISPLAY PANEL
Package Label – 200 mcg/mL
Rx Only NDC 0078-0183-25
Sandostatin®
octreotide acetate
Injection
Total Volume 5 mL Multi-Dose Vial
Each mL contains 200 mcg (0.2 mg/mL)
For Subcutaneous Injection
PRINCIPAL DISPLAY PANEL
Package Label – 1000 mcg/mL
Rx Only NDC 0078-0184-25
Sandostatin®
octreotide acetate
Injection
1000 mcg/mL (1.0 mg/mL)
For Subcutaneous Injection
Total Volume 5 mL Multi-Dose Vial
Sandostatin octreotide acetate injection, solution |
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Labeler - Novartis Pharmaceuticals Corporation (002147023) |
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Revised: 03/2012
Novartis Pharmaceuticals Corporation