Icariin
Food or supplementMeasured in people, not heightBy mouthNutrient
The main active compound in horny goat weed, sold as a supplement. It behaves like a plant oestrogen once gut bacteria have changed it.
The main prenylated flavonoid of Epimedium, sold as horny goat weed. Not an approved medicine anywhere. It is routinely described as a phytoestrogen, and gut bacteria convert it to icaritin, which is thought to be why it looks inert in a dish and active in an animal.
Risks. For anyone still growing, the real concern is that it acts on the pathway that ends growth.
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What has been measured, in whom, with every source, and what it does to the rest of you. And every article in the library.
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Educational content, not medical advice. Nothing here is a recommendation to take or stop taking anything — talk to a doctor about your own situation.