Horny Goat Weed (Epimedium) contains Icariin, a flavonoid with PDE5-inhibiting properties that support blood flow. BoostSteelX includes 300mg standardized for Icariin.
How Icariin Works
Icariin inhibits PDE5 — the same enzyme targeted by pharmaceutical ED medications — in a natural, gentler way. It also supports nitric oxide production, complementing L-Arginine's vasodilatory effects for comprehensive circulation support.
Clinical Research
Studies show Icariin supports smooth muscle relaxation and blood vessel dilation. In BoostSteelX, it pairs with L-Arginine for maximum blood flow. Learn how BoostSteelX works.
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