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CINACALCET is a brand name for Cinacalcet. The medicine, its uses, side effects and dosage are the same regardless of brand.
Used for: 1 INDICATIONS AND USAGE Cinacalcet is a positive modulator of the calcium sensing receptor indicated for: Secondary Hyperparathyroidism (HPT) in adult patients with chronic kidney disease (CKD) on dialysis. ( 1.1 ) Limitations of Use : Cinacalcet tablets are not indicated for use in patients with CKD who are not on…
Verbatim from this product's FDA label. Tap a section to expand.
1 ). 2 ): Starting dose is 30 mg once daily. Titrate dose no more frequently than every 2 to 4 weeks through sequential doses of 30, 60, 90, 120, and 180 mg once daily as necessary to achieve targeted intact parathyroid hormone (iPTH) levels.
iPTH levels should be measured no earlier than 12 hours after most recent dose. 3 ): Starting dose is 30 mg twice daily. Titrate dose every 2 to 4 weeks through sequential doses of 30 mg twice daily, 60 mg twice daily, 90 mg twice daily, and 90 mg three or four times daily as necessary to normalize serum calcium levels.
1 Administration Cinacalcet tablets should be taken with food or shortly after a meal. Cinacalcet tablets are administered orally and should always be taken whole and not chewed, crushed, or divided. 2 Secondary Hyperparathyroidism in Patients with Chronic Kidney Disease on Dialysis The recommended starting oral dose of cinacalcet tablets is 30 mg once daily.
3 )] . Cinacalcet tablets should be titrated no more frequently than every 2 to 4 weeks through sequential doses of 30, 60, 90, 120, and 180 mg once daily to target iPTH levels of 150 to 300 pg/mL. Serum iPTH levels should be assessed no earlier than 12 hours after dosing with cinacalcet tablets.
Cinacalcet tablets can be used alone or in combination with vitamin D sterols and/or phosphate binders. 1 )] . 3 Patients with Parathyroid Carcinoma and Primary Hyperparathyroidism The recommended starting oral dose of cinacalcet tablet is 30 mg twice daily.
The dose of cinacalcet tablets should be titrated every 2 to 4 weeks through sequential doses of 30 mg twice daily, 60 mg twice daily, and 90 mg twice daily, and 90 mg 3 or 4 times daily as necessary to normalize serum calcium levels.
1 )]. 4 Switching from Parsabiv (etelcalcetide) to Cinacalcet Discontinue etelcalcetide for at least 4 weeks prior to starting Cinacalcet. 1)] . Initiate Cinacalcet treatment at a starting dose of 30 mg once daily. 3 )] . 5 mg/dL, or if symptoms of hypocalcemia occur, calcium-containing phosphate binders and/or vitamin D sterols can be used to raise serum calcium.
0 mg/dL and/or symptoms of hypocalcemia have resolved. 2 )] .
, ≥ 25%) associated with cinacalcet were nausea and vomiting. gov/medwatch. 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 with rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.
Secondary Hyperparathyroidism in Patients with Chronic Kidney Disease on Dialysis In three double-blind, placebo-controlled clinical trials, 1126 patients with CKD on dialysis received study drug (656 cinacalcet, 470 placebo) for up to 6 months.
The most frequently reported adverse reactions are listed in Table 1. 7% (5/641) of placebo-treated patients across all completed placebo-controlled trials. Table 1. Adverse Reactions with Frequency ≥ 5% in Patients on Dialysis in Short-Term Studies for up to 6 Months Placebo (n = 470) Cinacalcet (n = 656) Event Included are events that were reported at a greater incidence in the cinacalcet group than in the placebo group (%) (%) Nausea 19 31 Vomiting 15 27 Diarrhea 20 21 Myalgia 14 15 Dizziness 8 10 Hypertension 5 7 Asthenia 4 7 Anorexia 4 6 Pain Chest, Non-Cardiac 4 6 Dialysis Access Site Infection 4 5 In a randomized, double-blind placebo-controlled study of 3883 patients with secondary HPT and CKD receiving dialysis in which patients were treated for up to 64 months (mean duration of treatment was 21 months in the cinacalcet group), the most frequently reported adverse reactions (incidence of ≥ 5% in the cinacalcet group and a difference ≥ 1% compared to placebo) are listed in Table 2.
Table 2. 3%). Patients with Parathyroid Carcinoma and Primary Hyperparathyroidism The safety profile of cinacalcet tablets in these patient populations is generally consistent with that seen in patients with CKD on dialysis. Forty six patients were treated with cinacalcet tablets in a single-arm study, 29 with Parathyroid Carcinoma and 17 with intractable pHPT.
5 WARNINGS AND PRECAUTIONS Hypocalcemia: Life threatening events and fatal outcomes were reported. Hypocalcemia can prolong QT interval, lower the threshold for seizures, and cause hypotension, worsening heart failure, and/or arrhythmia.
Monitor serum calcium carefully for the occurrence of hypocalcemia during treatment. 1 ).
Upper Gastrointestinal (GI) Bleeding:
Patients with risk factors for upper GI bleeding may be at increased risk. Monitor patients and promptly evaluate and treat any suspected GI bleeding. 2 ).
Hypotension, Worsening Heart Failure and/or Arrhythmias :
In postmarketing safety surveillance, isolated, idiosyncratic cases of hypotension, worsening heart failure, and/or arrhythmia have been reported in patients with impaired cardiac function. 3 ) Adynamic Bone Disease : May develop if iPTH levels are suppressed below 100 pg/mL.
1 )]. Significant lowering of serum calcium can cause paresthesias, myalgias, muscle spasms, tetany, seizures, QT interval prolongation and ventricular arrhythmia. Life threatening events and fatal outcomes associated with hypocalcemia have been reported in patients treated with cinacalcet tablets, including in pediatric patients.
4 )]. Cinacalcet tablets are not indicated for patients with CKD not on dialysis [see Indications and Usage ( 1 )] . In patients with secondary HPT and CKD not on dialysis, the long-term safety and efficacy of cinacalcet tablets have not been established.
Clinical studies indicate that cinacalcet-treated patients with CKD not on dialysis have an increased risk for hypocalcemia compared with cinacalcet-treated patients with CKD on dialysis, which may be due to lower baseline calcium levels.
4 mg/dL compared with 5% of patients receiving placebo. QT Interval Prolongation and Ventricular Arrhythmia Decreases in serum calcium can also prolong the QT interval, potentially resulting in ventricular arrhythmia. Cases of QT prolongation and ventricular arrhythmia have been reported in patients treated with cinacalcet tablets.
1 )]. Cinacalcet tablets treatment initiation is contraindicated if serum calcium is less than the lower limit of the normal range. 1 )
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Nine (20%) of the patients withdrew from the study due to adverse events. The most frequent adverse reactions and the most frequent cause of withdrawal in these patient populations were nausea and vomiting. Severe or prolonged cases of nausea and vomiting can lead to dehydration and worsening hypercalcemia so careful monitoring of electrolytes is recommended in patients with these symptoms.
Eight patients died during treatment with cinacalcet tablets in this study, 7 with Parathyroid Carcinoma (24%) and 1 (6%) with intractable pHPT. Causes of death were cardiovascular (5 patients), multi-organ failure (1 patient), gastrointestinal hemorrhage (1 patient) and metastatic carcinoma (1 patient).
Adverse events of hypocalcemia were reported in three patients (7%). 0% (0/46) of placebo-treated patients in all clinical studies. Table 3. Adverse Reactions with Frequency ≥ 10% in a Single-Arm, Open-Label Study in Patients with Primary Hyperparathyroidism or Parathyroid Carcinoma Cinacalcet Tablets Parathyroid Carcinoma (n=29) n (%) Intractable pHPT (n=17) n (%) Total (n=46) n (%) Number of Subjects Reporting Adverse Reactions 28 (97) 17 (100) 45 (98) Nausea 19 (66) 10 (59) 29 (63) Vomiting 15 (52) 6 (35) 21 (46) Paresthesia 4 (14) 5 (29) 9 (20) Fatigue 6 (21) 2 (12) 8 (17) Fracture 6 (21) 2 (12) 8 (17) Hypercalcemia 6 (21) 2 (12) 8 (17) Anorexia 6 (21) 1 (6) 7 (15) Asthenia 5 (17) 2 (12) 7 (15) Dehydration 7 (24) 0 (0) 7 (15) Anemia 5 (17) 1 (6) 6 (13) Arthralgia 5 (17) 1 (6) 6 (13) Constipation 3 (10) 3 (18) 6 (13) Depression 3 (10) 3 (18) 6 (13) Headache 6 (21) 0 (0) 6 (13) Infection Upper Respiratory 3 (10) 2 (12) 5 (11) Pain Limb 3 (10) 2 (12) 5 (11) n=Number of subjects receiving at least one dose of study drug.
pHPT=primary hyperparathyroidism In a randomized double-blind, placebo-controlled study of 67 patients with primary hyperparathyroidism for whom parathyroidectomy would be indicated on the basis of serum calcium levels, but who are unable to undergo surgery, the most common adverse reactions are listed in Table 4.
Table 4. 0. 5 mg/dL. Less than 1% of patients in each group permanently discontinued study drug due to hypocalcemia. 5 mg/dL. 5 mg/dL (21/33=64%) occurred during the first 6 months. 1% of patients receiving placebo permanently discontinued study drug due to hypocalcemia.
1% (2/33) of cinacalcet -treated patients and 0% (0/34) of placebo-treated patients. 2 Postmarketing Experience The following adverse reactions have been identified during post approval use of cinacalcet tablets. 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.
Rash and hypersensitivity reactions (including angioedema and urticaria), and myalgia Isolated, idiosyncratic cases of hypotension, worsening heart failure, and/or arrhythmia have been reported in patients with impaired cardiac function Gastrointestinal bleeding Chondrocalcinosis pyrophosphate (acute pseudogout)
Patients with congenital long QT syndrome, history of QT interval prolongation, family history of long QT syndrome or sudden cardiac death, and other conditions that predispose to QT interval prolongation and ventricular arrhythmia may be at increased risk for QT interval prolongation and ventricular arrhythmias if they develop hypocalcemia due to cinacalcet.
Closely monitor corrected serum calcium and QT interval in patients at risk receiving cinacalcet. 7% (5/687) of placebo-treated patients. While the basis for the reported difference in seizure rate is not clear, the threshold for seizures is lowered by significant reductions in serum calcium levels.
Monitor serum calcium levels in patients with seizure disorders receiving cinacalcet tablets . Concurrent Administration with Other Calcium-Lowering Drug Products Concurrent administration of cinacalcet with calcium-lowering drugs including other calcium-sensing receptor agonists could result in severe hypocalcemia.
Closely monitor serum calcium in patients receiving cinacalcet and concomitant therapies known to lower serum calcium levels. Patient Education and Hypocalcemia Treatment Educate patients on the symptoms of hypocalcemia and advise them to contact a healthcare provider if they occur.
If corrected serum calcium falls below the lower limit of normal or symptoms of hypocalcemia develop, start or increase calcium supplementation (including calcium, calcium-containing phosphate binders, and/or vitamin D sterols or increases in dialysate calcium concentration).
2 )]. 2 Upper Gastrointestinal Bleeding Cases of gastrointestinal bleeding, mostly upper gastrointestinal bleeding, have occurred in patients using calcimimetics, including cinacalcet, from postmarketing and clinical trial sources. The exact cause of GI bleeding in these patients is unknown.
Patients with risk factors for upper GI bleeding (such as known gastritis, esophagitis, ulcers or severe vomiting) may be at increased risk for GI bleeding when receiving cinacalcet treatment. 1 )] and for signs and symptoms of GI bleeding and ulcerations during cinacalcet tablets therapy.
Promptly evaluate and treat any suspected GI bleeding. 2 )]. 4 Adynamic Bone Disease Adynamic bone disease may develop if iPTH levels are suppressed below 100 pg/mL. One clinical study evaluated bone histomorphometry in patients treated with cinacalcet tablets for 1 year.
Three patients with mild hyperparathyroid bone disease at the beginning of the study developed adynamic bone disease during treatment with cinacalcet tablets. Two of these patients had iPTH levels below 100 pg/mL at multiple time points during the study.
In three 6-month, phase 3 studies conducted in patients with CKD on dialysis, 11% of patients treated with cinacalcet tablets had mean iPTH values below 100 pg/mL during the efficacy-assessment phase. If iPTH levels decrease below 150 pg/mL in patients treated with cinacalcet tablets, the dose of cinacalcet tablets and/or vitamin D sterols should be reduced or therapy discontinued.