Common minor side effects when taking Neurobion Forte include diarrhea, nausea, drowsiness, numbness, tingling and breath odor, according to Drugs.com. A more serious allergic reaction, such as hives, difficulty breathing or facial swelling, occasionally occurs and requires immediate medical attention. Side effects vary depending on the form of the drug taken.
Neurobion Forte is a multivitamin composed primarily of B vitamins, as stated by Drugs.com. The drug is available as a standard tablet, quick-dissolve tablet, capsule or injection. All forms except the injection have the common side effect of gastrointestinal symptoms, including nausea and mild diarrhea. The regular tablets are also associated with drowsiness as well as numbness and tingling in the extremities, while the capsule is associated with minor breath odor. The injection has no common side effects, but a serious allergic reaction is always a possibility.
Doctors prescribe Neurobion Forte to those with metabolism problems; cardiovascular issues, including a history of stroke or heart attack; gastrointestinal disturbances; or central nervous system problems, according to HealthCentral. The formula includes vitamins B1, B6 and B12 at levels that reduce inflammation and help reduce the risk of many serious health problems. Taking Neurobion tablets or capsules with food and plenty of water minimizes the risk of some minor side effects.