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warnings and cautions
5 WARNINGS AND PRECAUTIONS Peripheral neuropathy : Perform baseline and follow-up neurological evaluations at 6-month intervals in all patients ( 5.1 ). Tremor : Reduce dose to ameliorate tremor or discontinue treatment if tremor does not resolve within days of dose reduction ( 5.2 ). Diarrhea and weight loss : Evaluate for underlying gastrointestinal disease in patients who do not respond to usual interventions (e.g. diet modification) ( 5.3 ). Reductions in Platelet Count : Mild reductions in platelet counts without association with bleeding were observed in some patients. Monitoring of platelet counts is recommended ( 5.4 ). 5.1 Peripheral Neuropathy In clinical trials, cases of peripheral neuropathy have been reported in 3% of Gaucher's patients treated with ZAVESCA. All patients receiving ZAVESCA treatment should undergo baseline and repeat neurological evaluations at approximately 6-month intervals. Patients who develop symptoms of peripheral neuropathy such as pain, weakness, numbness and tingling should have a careful re-assessment of the risk/benefit of ZAVESCA therapy, and cessation of treatment may be considered. 5.2 Tremor Approximately 30% of patients have reported tremor or exacerbation of existing tremor on treatment. These tremors were described as an exaggerated physiological tremor of the hands. Tremor usually began within the first month of therapy and in many cases resolved between 1 to 3 months during treatment. Reduce dose to ameliorate tremor or discontinue treatment if tremor does not resolve within days of dose reduction. 5.3 Diarrhea and Weight Loss Diarrhea and weight loss were common in clinical studies of patients treated with ZAVESCA, occurring in approximately 85% and up to 65% of treated patients, respectively. Diarrhea appears to be the result of the inhibitory activity of ZAVESCA on intestinal disaccharidases such as sucrase-isomaltase in the gastrointestinal tract leading to reduced absorption of dietary disaccharides in the small intestine, with a resultant osmotic diarrhea. It is unclear if weight loss results from the diarrhea and associated gastrointestinal complaints, a decrease in food intake, or a combination of these or other factors. The incidence of weight loss was most evident in the first 12 months of treatment. Diarrhea decreased over time with continued ZAVESCA treatment, and may respond to individualized d...
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adverse reactions
6 ADVERSE REACTIONS The following serious adverse reactions are described below and elsewhere in the labeling: Peripheral Neuropathy [see Warnings and Precautions (5.1) ] Tremor [see Warnings and Precautions (5.2) ] Diarrhea and Weight Loss [see Warnings and Precautions (5.3) ] Reductions in Platelet Count [see Warnings and Precautions (5.4) ] The most common adverse reactions (incidence ≥5%) are: diarrhea, weight loss, stomach pain, gas, nausea and vomiting headache including migraine, tremor, leg cramps, dizziness, weakness, vision problems, thrombocytopenia, muscle cramps, back pain, constipation, dry mouth, heaviness in arms and legs, memory loss, unsteady walking, anorexia, indigestion, paresthesia, stomach bloating, stomach pain not related to food, and menstrual changes ( 6.1 ). To report SUSPECTED ADVERSE REACTIONS, contact Janssen at 1-800-526-7736 (1-800- JANSSEN) 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. The data described below reflect exposure of 80 patients with type 1 Gaucher disease in two open-label, uncontrolled, monotherapy trials, one open-label, active-controlled trial, and two extensions, who received ZAVESCA at doses ranging from 50 mg to 200 mg three times daily. Patients were aged 18 to 69 years at first treatment. The population was evenly distributed by gender. The most common serious adverse reaction reported with ZAVESCA treatment in clinical trials was peripheral neuropathy [see Warnings and Precautions (5.1) ]. The most commonly reported adverse reactions in patients treated with ZAVESCA (occurring in ≥5%) that were considered related to ZAVESCA are shown in Tables 1 and 2 [see Warnings and Precautions (5.2 , 5.3) ]. The most common adverse reactions requiring intervention were diarrhea and tremor [see Warnings and Precautions (5.2 , 5.3) ]. In two open-label, uncontrolled monotherapy trials, adult type 1 Gaucher disease patients were treated with ZAVESCA at a starting dose of 100 mg three times daily (dose range 100 to 200 mg three times daily) for up to 12 months in 28 patients [Study 1], or at a dose of 50 mg three times da...
adverse reactions table
Table 1: Adverse Reactions in ≥5% of Patients in Two Open-Label, Uncontrolled Monotherapy Trials of ZAVESCAIncidence of adverse reactionsStudy 1 (starting dose 100 mg three times daily) Study 2 (50 mg three times daily) Patients entered in Study (n)2818Body System - Preferred Term% of patients reporting% of patients reportingGastrointestinal System Diarrhea8989 Flatulence2944 Abdominal Pain1850 Nausea1422 Vomiting411 Bloating06 Anorexia70 Dyspepsia70 Epigastric pain not food-related06Metabolic and Nutritional Disorders Weight Decrease3967Central and Peripheral Nervous System Headache2122 Tremor1111 Dizziness011 Leg cramps411 Paresthesia70 Migraine06Vision Disorders Visual Disturbance017Musculoskeletal Disorders Cramps011Platelet, Bleeding, and Clotting Disorders Thrombocytopenia76Reproductive disorders, female Menstrual disorder06