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Glossary Item Description
5-formyl tetrahydrofolate

5-formyl tetrahydrofolate is another term for folinic acid, an active form of folate, which is another term for Vitamin B-9, which is one of the B-group of vitamins

5-hydroxytryptamine (5-HT)

5-hydroxytryptamine (5-HT) is another term for serotonin, a hormone and neurotrasmitter found in many tissues, including blood platelets, intestinal mucosa, the pineal body, and the central nervous system.


5-hydroxytryptophan is a dietary supplement made from the seeds of the African plant Griffonia simplicifolia.

5-Methoxy-N-Acetyltryptamine Acetamide

5-methoxy-N-acetyltryptamine acetamide is another term for melatonin, the hormone which regulates our biological clock.

About This Glossary

This glossary is designed to explain some of the jargon and gobbledygook used by some people when they talk about autism or research..

You may be able to find more information, including links to other parts of this website, by clicking on the title of an item.

If you know of any other items we should include in this section, please email info@informationautism.org.

Please note that we reserve the right not to include an item if we feel that it is not appropriate.


The fact that an intervention is listed in this glossary does not necessarily mean that we agree with its use. Nor does it necessarily mean that there is any scientifically valid or reliable evidence behind it.