Horny Goat Weed (Epimedium) Supplement Dosing
A single, universally recommended Epimedium dose is not established because supplement formulations vary and clinical studies do not provide a basis for a standard dosing recommendation. [1]
Labeled Adult Dose Example
For the product “LibidoStim-F™,” the serving size is 2 capsules per day. [2]
For that label, the Epimedium (Epimedium sagittatum) component is standardized to contain 20% icariins and provides 50 mg Horny Goat Weed per 2-capsule serving. [2]
Typical Clinical-Study Exposure (Standardized Extract)
In a human pharmacokinetic trial using a standardized Epimedium prenylflavonoid extract, single oral doses of 370 mg, 740 mg, and 1110 mg were administered. [3]
Dose Standardization Considerations
Epimedium products are often standardized to icariin content, so dosing should be matched to the product’s standardized constituent rather than the product’s total mass alone. [2]
Safety Note
Toxicity and safety evaluations for Epimedium have not been well established for many dosing regimens, and adverse effects have been reported in case reports. [4]