Neurobion is the brand name for a multivitamin made by the pharmaceutical company Merck, according to Drugs.com. Neurobion belongs to the drug class vitamin and mineral combinations, and it is available over the counter and by prescription.
Neurobion is most often sold in quick-dissolve tablet form, but it can also be found as a capsule, elixir, controlled-release tablet, liquid or injection, as stated by Drugs.com. Neurobion consists of a mixture of B vitamins, and it is taken to supplement any deficiencies in a person's diet. Side effects include nausea, headache, diarrhea, stomach upset and an unpleasant taste in the mouth. It is not classified as a controlled drug.