1. Zinc (8 mg)

How it supports testosterone:

Zinc is essential for normal male hormone production. Deficiency reliably lowers testosterone, and supplementation restores or increases T levels. Helps maintain testosterone during stress and heavy training.

Key finding: Zinc deficiency ↓ testosterone; supplementation ↑ testosterone.

Study links: HERE

2. Shilajit (124 mg)

How it supports testosterone:

Clinically proven to raise total & free testosterone and DHEA. Also improves mitochondrial energy, strength retention, and fatigue resistance.

Key finding: Zinc twice daily for 90 days increased testosterone ~20%.

Study links: HERE, HERE

3. Ashwagandha (20 mg)

How it supports testosterone:

Reduces cortisol, which indirectly allows testosterone to rise. Consistently show increases in testosterone, reductions in stress, better sleep, and improved vitality.

Key finding: 14–15% increase in testosterone after 8 weeks.

Study links: HERE, HERE, HERE

4. Tongkat Ali (100:1 Extract, 20 mg)

How it supports testosterone:

Improves free testosterone, reduces cortisol, and boosts libido, mood, and vitality. Helps restore testosterone levels in men with low or borderline T.

Key finding: 37% increase in free testosterone and 16% reduction in cortisol after 4 weeks.

Study link: HERE

5. Epimedium (Horny Goat Weed, 8:1 Extract, 20 mg)

How it supports testosterone:

Contains icariin — shown in preclinical studies to stimulate testicular testosterone production, improve nitric oxide signaling, and boost sexual performance. Human evidence focuses more on libido/erectile function.

Key finding: Icariin increases testosterone and sperm count in animal models.

Study links: HERE, HERE

6. Fenugreek (10:1 Extract, 20 mg)

How it supports testosterone:

Clinical trials show fenugreek increases total & free testosterone, improves strength, reduces body fat, and enhances libido.

Key finding: 4 of 6 human studies show significant testosterone increases.

Study links: HERE, HERE, HERE

7. Boron (3 mg)

How it supports testosterone:

Boron reduces SHBG (the protein that binds T), increases free testosterone, and can decrease estrogen. Even low dietary doses contribute to a healthier hormonal environment.

Key finding: Significantly increased free testosterone while lowering estrogen & SHBG.

Study links: HERE, HERE, HERE