20-Beta-Hydroxyecdysone
See 20-Hydroxyecdysone.
20-Hydroxyecdysone
An ecdysteroid shown to have modest, growth-promoting and muscle-building effects in animal experiments. 20-hydroxyecdysone (or plant extracts standardized for 20-hydroxyecdysone) is non-toxic, and used in a variety of bodybuilding supplements, but whether it actually helps increase muscle mass and strength in humans is unknown. A small, 2006 study on resistance-trained males taking a standardized, Polypodium vulgare/Suma...
3′,5,7-Trihydroxy-4′-Methoxyflavanone
See hesperitin.
3-O-Methyl-D-Chiro-Inositol
See D-Pinitol.
4-Hydroxyisoleucine
An amino acid isolated from fenugreek seeds. 4-Hydroxyisoleucine exhibits lipid-lowering and antidiabetic activity in animal feeding experiments. Early experiments on humans also indicated it could boost post-exercise glycogen resynthesis, but the data is...
5-HTP (5-Hydroxytryptophan)
A metabolite of the essential amino acid l-tryptophan and intermediate in the production of the neurotransmitter serotonin (5-hydroxytryptamine or 5-HT) as well as the hormone melatonin. 5-HTP is used as an alternative treatment for depression, and included in a number of supplements to improve mood and assist with appetite control/weight loss. See Andrew Novick’s and David Tolson’s article, “5-HTP” for more...
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