Treatment for fibromyalgia using B vitamins is a highly debated subject, according to About.com. A daily multivitamin containing B vitamins is a sufficient treatment for fibromyalgia, as B vitamins are considered a complementary or alternative treatment, according to University of Maryland Medical Center.
Some people with fibromyalgia find that herbal supplements and vitamins do help them feel more energetic, explains WebMD. However as of 2015, there are not sufficient studies to suggest that B vitamin treatment improves fibromyalgia or relieves symptoms. B12 injections are available by prescription and should not be taken in doses smaller or larger than prescribed, states Drugs.com. Overdose and allergic reactions are possible.