Many parents report success with megavitamin therapy. Some studies have shown that vitamin B improves eye contact and speech and lessens tantrum behavior. Vitamin B causes fewer side effects than other medications and is considered safe when used in appropriate doses. However, not many health practitioners advocate its use in the treatment of autism, citing that the studies showing its benefit were flawed. This compound, available in many health food stores, is legally classified as a food, not a vitamin or drug.
Some researchers claim that it improves speech in children with autism.
Those who respond to this treatment will usually do so within a week. Again, many doctors do not feel that the studies are adequate to promote this treatment.