Hormonal/Mobility

Horny Goat Weed

Traditional Asian herb with limited human evidence for sexual function and bone health; primarily studied in small, low-quality trials.

Horny Goat Weed

Traditional Asian herb with limited human evidence for sexual function and bone health; primarily studied in small, low-quality trials.

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evidence

Caution

risk

Overview

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Quick Take

Skip unless curious; evidence is too weak to rely on for erectile dysfunction or bone health.

Horny goat weed is a leafy plant native to Asia, traditionally used as an aphrodisiac and bone tonic. Its active compound icariin acts as a mild phosphodiesterase-5 (PDE5) inhibitor and may influence nitric oxide signaling and osteoblast activity. Small human trials suggest potential roles in erectile function and bone mineral density, though data quality is low and replication is lacking. It may appeal to men with mild erectile concerns or postmenopausal women targeting bone health, but it is not a substitute for proven therapies.

Proven Benefits

May support bone mineral density

May improve erectile function

May support testosterone

Protocol

Amount

500-1000 mg

Frequency

Once daily

When

With food to reduce stomach upset.

Onset Time

4-8 weeks for subjective effects; no acute benefit established.

Who Should Consider

Men with mild erectile concerns

Adults interested in traditional bone tonics

Postmenopausal women seeking phytoestrogen options

How It Works

Icariin weakly inhibits PDE5, which may increase nitric oxide-mediated blood flow to erectile tissue, similar to prescription ED medications but with lower potency. In bone tissue, icariin appears to stimulate osteoblast differentiation and inhibit osteoclast activity, potentially supporting bone remodeling.

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