Sandostatin

Warnings and Precautions, Steatorrhea and Malabsorption of Dietary Fats ( 5.5 ) 7/2024

1 INDICATIONS AND USAGE Sandostatin Injection is a somatostatin analogue indicated: Acromegaly : To reduce blood levels of growth hormone (GH) and insulin growth factor-1 (IGF-1; 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. ( 1.1 ) Carcinoid Tumors : 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. ( 1.2 ) Vasoactive Intestinal Peptide Tumors (VIPomas) : For the treatment of profuse watery diarrhea associated with VIP-secreting tumors. ( 1.3 ) Limitations of Use Improvement in clinical signs and symptoms, or reduction in tumor size or rate of growth, were not shown in clinical trials performed with Sandostatin Injection; these trials were not optimally designed to detect such effects. ( 1.4 ) 1.1 Acromegaly Sandostatin Injection is indicated to reduce blood levels of growth hormone (GH) and insulin growth factor-1 (IGF-1; 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. 1.2 Carcinoid Tumors Sandostatin Injection is indicated for treatment of severe diarrhea and flushing episodes associated with metastatic carcinoid tumors. 1.3 Vasoactive Intestinal Peptide Tumors Sandostatin Injection is indicated for the treatment of the profuse watery diarrhea associated with vasoactive intestinal peptide tumors (VIPomas)-secreting tumors. 1.4 Important Limitations of Use Improvement in clinical signs and symptoms, or reduction in tumor size or rate of growth, were not shown in clinical trials performed with Sandostatin Injection; these trials were not optimally designed to detect such effects.

2 DOSAGE AND ADMINISTRATION Sandostatin Injection may be administered subcutaneously or intravenously. ( 2.1 ) Acromegaly : Recommended initial Sandostatin dosage is 50 mcg three times daily during the initial 2 weeks of therapy. Maintenance dose 100 mcg to 500 mcg three times daily. ( 2.2 ) Carcinoid Tumors : Recommended dosage range of 100 mcg to 600 mcg daily in two to four divided doses during the initial 2 weeks of therapy. ( 2.3 ) VIPomas : Recommended dosage range of 200 mcg to 300 mcg daily in two to four divided doses during the initial 2 weeks of therapy. ( 2.4 ) 2.1 Dosage and Administration Overview Sandostatin Injection may be administered subcutaneously or intravenously. Pain with subcutaneous administration may be reduced by using the smallest volume that will deliver the desired dose. 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. Sandostatin Injection is not compatible in Total Parenteral Nutrition solutions because of the formation of a glycosyl octreotide conjugate which may decrease the efficacy of the product. Sandostatin Injection may be diluted in volumes of 50 mL to 200 mL and infused intravenously over 15 to 30 minutes or administered by intravenous (IV) push over 3 minutes. In emergency situations (e.g., carcinoid crisis), it may be given by rapid bolus. Assess total and/or free T4 levels at baseline and periodically during chronic Sandostatin therapy. 2.2 Recommended Dosage and Monitoring for Acromegaly The recommended initial dosage of Sandostatin is 50 mcg three times daily to be administered subcutaneously. Increase Sandostatin dose based upon GH or IGF-1 levels. The goal is to achieve GH levels less than 5 ng/mL or IGF-1 levels within normal range. Monitor GH or IGF-1 every two weeks after initiating Sandostatin therapy or with dosage change, and to guide titration. The most common dosage is 100 mcg three times daily, but some patients require up to 500 mcg three times daily 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. Sandostatin Injection should be withdrawn yearly for approximately 4 weeks from patients who have received irradiation to assess disease activity. If GH or IGF-1 levels increase and signs and symptoms recur, Sandostatin Injection therapy may be resumed. 2.3 Recommended Dosage and Monitoring for Carcinoid Tumors The recommended daily dosage of Sandostatin Injection during the first 2 weeks of therapy ranges from 100 to 600 mcg/day in two to four divided doses given subcutaneously (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. Measurement of urinary 5-hydroxyindole acetic acid, plasma serotonin, plasma Substance P may be useful in monitoring the progress of therapy. 2.4 Recommended Dosage and Monitoring for Vasoactive Intestinal Peptide Tumors Daily dosages of 200 mcg to 300 mcg in two to four divided doses given subcutaneously are recommended during the initial 2 weeks of therapy (range, 150 mcg to 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. Measurement of Plasma vasoactive intestinal peptide (VIP) may be useful in monitoring the progress of therapy.

3 DOSAGE FORMS AND STRENGTHS Injection: 50 mcg/mL, 100 mcg/mL, or 500 mcg/mL of octreotide (as acetate) as a clear solution in a single-dose ampul. Injection: 50 mcg/mL, 100 mcg/mL, or 500 mcg/mL of octreotide (as acetate) in a single-dose ampul. ( 3 )

4 CONTRAINDICATIONS Sensitivity to this drug or any of its components. Sensitivity to this drug or any of its components. ( 4 )

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Complete Atrioventricular Block [see Warnings and Precautions (5.1)] Cholelithiasis and Complications of Cholelithiasis [see Warnings and Precautions (5.2)] Hyperglycemia and Hypoglycemia [see Warnings and Precautions (5.3)] Thyroid Function Abnormalities [see Warnings and Precautions (5.4)] Steatorrhea and Malabsorption of Dietary Fats [see Warnings and Precautions (5.5)] Changes in Vitamin B12 Levels [see Warnings and Precautions (5.6)] Most common adverse reactions (incidence > 10%) in patients with acromegaly are gallbladder abnormalities, sinus bradycardia, diarrhea, loose stools, nausea, abdominal discomfort, hyperglycemia, and hypothyroidism. In other patients, most common adverse reactions (incidence > 10%) are gallbladder abnormalities. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Novartis Pharmaceuticals Corporation at 1-888-669-6682 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Gallbladder Abnormalities Gallbladder abnormalities, especially stones and/or biliary sludge, frequently develop in patients on chronic Sandostatin Injection therapy [see Warnings and Precautions (5.1)] . 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 Injection for 12 months or longer was 52%. Less than 2% of patients treated with Sandostatin Injection for 1 month or less developed gallstones. Cardiac In acromegalics, sinus bradycardia (< 50 bpm) developed in 25%; conduction abnormalities occurred in 10% and arrhythmias developed in 9% of patients during Sandostatin Injection therapy [see Warnings and Precautions (5.1)] . Gastrointestinal Diarrhea, loose stools, nausea, and abdominal discomfort were each seen in 34% to 61% of acromegalic patients in U.S. studies. 2.6% of the patients discontinued therapy due to these symptoms. These symptoms were seen in 5% to 10% of patients with carcinoid tumors and VIPomas. 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 8% and 4% required initiation of thyroid replacement therapy during Sandostatin Injection therapy [see Warnings and Precautions (5.4)] . 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 (5.2)] . Other Adverse Events 1% to 4% Other events, each observed in 1% to 4% of patients, included fatigue, weakness, pruritus, joint pain, backache, urinary tract infection, cold symptoms, flu symptoms, injection site hematoma, bruise, edema, flushing …

7 DRUG INTERACTIONS The following drugs require monitoring and possible dose adjustment when used with Sandostatin Injection : Cyclosporine, insulin, oral hypoglycemic agents, beta-blockers, and bromocriptine. ( 7 ) Lutetium Lu 177 Dotatate Injection : Discontinue Sandostatin Injection at least 24 hours prior to each lutetium Lu 177 dotatate dose. ( 7.6 ) 7.1 Cyclosporine Octreotide has been associated with alterations in nutrient absorption, so it may have an effect on absorption of orally administered drugs. Concomitant administration of Sandostatin Injection with cyclosporine may decrease blood levels of cyclosporine and result in transplant rejection. 7.2 Insulin and Oral Hypoglycemic Drugs Octreotide inhibits the secretion of insulin and glucagon. Therefore, blood glucose levels should be monitored when Sandostatin Injection treatment is initiated or when the dose is altered and anti-diabetic treatment should be adjusted accordingly. 7.3 Bromocriptine Concomitant administration of octreotide and bromocriptine increases the availability of bromocriptine. 7.4 Other Concomitant Drug Therapy Concomitant administration of bradycardia-inducing drugs (e.g., beta-blockers) may have an additive effect on the reduction of heart rate associated with octreotide. Dose adjustments of concomitant medication may be necessary. Octreotide has been associated with alterations in nutrient absorption, so it may have an effect on absorption of orally administered drugs. 7.5 Drug Metabolism Interactions 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 GH. 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. 7.6 Lutetium Lu 177 Dotatate Injection Octreotide competitively binds to somatostatin receptors and may interfere with the efficacy of lutetium Lu 177 dotatate. Discontinue Sandostatin Injection at least 24 hours prior to each lutetium Lu 177 dotatate dose.

8 USE IN SPECIFIC POPULATIONS Females and Males of Reproductive Potential : Advise premenopausal females of the potential for an unintended pregnancy. ( 8.3 ) 8.1 Pregnancy Risk Summary The limited data with Sandostatin Injection in pregnant women are insufficient to inform a drug-associated risk for major birth defects and miscarriage. In animal reproduction studies, no adverse developmental-effects were observed with IV administration of octreotide to pregnant rats and rabbits during organogenesis at doses 7- and 13-times, respectively the maximum recommended human dose (MRHD) of 1.5 mg/day based on body surface area (BSA). Transient growth retardation, with no impact on postnatal development, was observed in rat offspring from a pre- and post-natal study of octreotide at IV doses below the MRHD based on BSA ( see Data ). The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Human Data 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 to 300 mcg/day of Sandostatin Injection or 20 mg to 30 mg once a month of octreotide acetate for injectable suspension, however some women elected to continue octreotide therapy throughout pregnancy. In cases with a known outcome, no congenital malformations were reported. Animal Data In embryo-fetal development studies in rats and rabbits, pregnant animals received IV doses of octreotide up to 1 mg/kg/day during the period of organogenesis. A slight reduction in body weight gain was noted in pregnant rats at 0.1 and 1 mg/kg/day. There were no maternal effects in rabbits or embryo-fetal effects in either species up to the maximum dose tested. At 1 mg/kg/day in rats and rabbits, the dose multiple was approximately 7- and 13-times, respectively, at the highest recommended human dose of 1.5 mg/day based on BSA. In a pre- and post-natal development rat study at IV doses of 0.02-1 mg/kg/day, a transient growth retardation of the offspring was observed at all doses which was possibly a consequence of GH inhibition by octreotide. The doses attributed to the delayed growth are below the human dose of 1.5 mg/day, based on BSA. 8.2 Lactation Risk Summary There is no information available on the presence of Sandostatin Injection in human milk, the effects of the drug on the breastfed infant, or the effects of the drug on milk production. Studies show that octreotide administered subcutaneously passes into the milk of lactating rats; however, due to species-specific differences in lactation physiology, animal data may not reliably predict drug levels in human milk ( see Data ). The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for Sandostatin Injection, and any potential adverse effects on the breastfed child from Sandostatin Injection or from the underlying maternal condition. Data Following a subcutaneous dose (1 mg/kg) of octreotide to lactating rats, transfer of octreotide into milk was observed at a low concentration compared to plasma (milk/plasma ratio of 0.009). 8.3 Females and Males of Reproductive Potential Discuss the potential for unintended pregnancy with premenopausal women as the therapeutic benefits of a reduction in GH levels and normalization of insulin-like growth factor 1 (IGF-1) concentration in acromegalic females treated with octreotide may lead to improved fertility. 8.4 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 Injection in pediatric pati …

12.1 Mechanism of Action Sandostatin Injection exerts pharmacologic actions similar to the natural hormone, somatostatin. It is an even more potent inhibitor of GH, glucagon, and insulin than somatostatin. Like somatostatin, it also suppresses luteinizing hormone (LH) response to gonadotropin releasing hormone (GnRH), decreases splanchnic blood flow, and inhibits release of serotonin, gastrin, VIP, secretin, motilin, and pancreatic polypeptide. By virtue of these pharmacological actions, octreotide has been used to treat the symptoms associated with metastatic carcinoid tumors (flushing and diarrhea), and VIP secreting adenomas (watery diarrhea).

11 DESCRIPTION Sandostatin 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 or IV 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 mcg, 100 mcg, or 500 mcg octreotide (as acetate). Each ampul also contains lactic acid, USP (3.4 mg), mannitol, USP (45 mg), sodium bicarbonate, USP (quantity sufficient to pH 4.2 ± 0.3), water for injection, USP (quantity sufficient 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 g/mol (free peptide, C 49 H 66 N 10 O 10 S 2 ) and its amino acid sequence is: octreotide acetate amino acid sequence

10 OVERDOSAGE A limited number of accidental overdoses of Sandostatin Injection in adults have been reported. In adults, the doses ranged from 2,400 to 6,000 mcg/day administered by continuous infusion (100 to 250 mcg/hour) or subcutaneously (1,500 mcg 3 times a day). Adverse events in some patients included arrhythmia, complete atrioventricular block, hypotension, cardiac arrest, brain hypoxia, pancreatitis, hepatitis steatosis, hepatomegaly, lactic acidosis, flushing, diarrhea, lethargy, weakness, and weight loss. 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.

16 HOW SUPPLIED/STORAGE AND HANDLING How Supplied Sandostatin (octreotide acetate) Injection is available in 1 mL ampuls 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 Storage and Handling For prolonged storage, Sandostatin ampuls should be stored at refrigerated temperatures 2°C to 8°C (36°F to 46°F) and store in outer carton in order to protect from light. At room temperature (20°C to 30°C or 70°F to 86°F), 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. Ampuls should be opened just prior to administration and the unused portion discarded. Dispose unused product or waste properly. Sandostatin Injection is stable in sterile isotonic saline solutions or sterile solutions of dextrose 5% in water for 24 hours.