It's important to talk to your healthcare provider if you've had an allergic reaction to dimethyl fumarate, VUMERITY® (diroximel fumarate), or any of its ingredients. You should also discuss the serious side effects associated with VUMERITY, including:
PML is a rare brain infection that usually leads to death or severe disability over a period of weeks or months. Tell your healthcare provider right away if you get any of these symptoms of PML:
Your healthcare provider should check your white blood cell count before you start VUMERITY, 6 months after starting treatment, and then every 6-12 months thereafter as they feel necessary.
Your healthcare provider should do blood tests to check your liver function before you start taking VUMERITY and during treatment if needed. Tell your healthcare provider right away if you get any symptoms of a liver problem during treatment, including:
Your healthcare provider should do a blood test before you start treatment with VUMERITY and while you’re on therapy.
The most common side effects of VUMERITY include:
These are not all the possible side effects of VUMERITY. Call your healthcare provider for medical advice about side effects.