20-Hydroxyecdysone health benefit and side effects. Does 20-Hydroxyecdysone improve athletic performance?

20-Hydroxyecdysone (ecdysterone or 20E) is a naturally occurring hormone which controls the moulting and metamorphosis of arthropods.

Plants make 20-Hydroxyecdysone
20-Hydroxyecdysone
is made by various plants where its purpose is presumably to disrupt the development and reproduction of insect pests.

Does 20-Hydroxyecdysone build muscle?
20-Hydroxyecdysone is an ingredient in some nutritional supplements that claim to enhance physical performance. We have not seen any human studies, as of June 2008, regarding the use of

20-Hydroxyecdysone is found in many plants including:
Achyranthes bidentata root
Cyanotis vaga
Sida rhombifolia
Silene viridiflora herb

Additional ectysteroids include:
Integristerone A, 26-hydroxypolypodine B, 2-deoxy-20,26-dihydroxyecdysone, and polypodine B. 2-Deoxy-20,26-dihydroxyecdysone. Ecdysterone has been found in a great many plants and animals and has some valuable pharmaceutical properties.

20-Hydroxyecdysone in insects
Programmed cell death of larval-specific tissues in insects is under the control of 20-hydroxyecdysone.

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