Vumerity Side Effects

6 ADVERSE REACTIONS The following important adverse reactions are described elsewhere in labeling: Anaphylaxis and Angioedema [see Warnings and Precautions ( 5.1 )] Progressive Multifocal Leukoencephalopathy [see Warnings and Precautions Section ( 5.2 )] Herpes Zoster and Other Serious Opportunistic Infections [see Warnings and Precautions ( 5.3 )] Lymphopenia [see Warnings and Precautions ( 5.4 )] Liver Injury [see Warnings and Precautions ( 5.6 )] Flushing [see Warnings and Precautions ( 5.6 )] Serious Gastrointestinal Reactions [see Warnings and Precautions ( 5.7 )] Most common adverse reactions (incidence for dimethyl fumarate [which has the same active metabolite as VUMERITY] ≥10% and ≥2% more than placebo) were flushing, abdominal pain, diarrhea, and nausea.

( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Biogen at 1-800-456-2255 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 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 clinical practice.

The data described in the following sections were obtained using dimethyl fumarate delayed-release capsules, which has the same active metabolite as VUMERITY.

In placebo controlled and uncontrolled clinical studies of dimethyl fumarate (which has the same active metabolite as VUMERITY), a total of 2513 patients have been followed for periods up to 13 years with an overall exposure equivalent to 11,318 person-years.

A total of 1169 patients have received at least 5 years of treatment with dimethyl fumarate, and 426 patients have received at least 10 years of treatment with dimethyl fumarate.

Adverse Reactions in Placebo-Controlled Trials with Dimethyl Fumarate In the two well-controlled studies demonstrating effectiveness, 1529 patients received dimethyl fumarate with an overall exposure of 2244 person-years [see Clinical Studies ( 14 )].

The adverse reactions presented in Table 1 below are based on safety information from 769 patients treated with dimethyl fumarate 240 mg twice a day and 771 placebo-treated patients.

The most common adverse reactions (incidence ≥10% and ≥2% more than placebo) for dimethyl fumarate were flushing, abdominal pain, diarrhea, and nausea.

Table 1: Adverse Reactions in Study 1 and 2 Reported for Dimethyl Fumarate at ≥2% Higher Incidence than Placebo Adverse Reactions Dimethyl Fumarate 240 mg Twice Daily (N=769) % Placebo (N=771) % Flushing 40 6 Abdominal pain 18 10 Diarrhea 14 11 Nausea 12 9 Vomiting 9 5 Pruritus 8 4 Rash 8 3 Albumin urine present 6 4 Erythema 5 1 Dyspepsia 5 3 Aspartate aminotransferase increased 4 2 Lymphopenia 2 <1 Gastrointestinal Dimethyl fumarate caused GI events (e.g., nausea, vomiting, diarrhea, abdominal pain, and dyspepsia).