A traditional plant sold to raise testosterone, but careful studies show no testosterone rise in healthy men. Modest, mixed evidence supports better sexual function—firmer erections in some men, more desire in some women—likely through improved blood flow. Low-cost and generally well tolerated short-term; the case for choosing independently tested products and avoiding high doses is strong. (Full Review)
| Marker | Target | Why |
|---|---|---|
| ALT / AST (liver enzymes) | ALT ~10–26 U/L; AST ~10–26 U/L | Screen for the rare liver-injury signal |
| Creatinine / eGFR (kidney filtration) | eGFR >90 mL/min/1.73m² | Screen for the rare kidney-injury signal |
| Total & Free Testosterone (men) | Total ~500–900 ng/dL; free in upper-normal range | Set expectations and detect any hormonal change |
| PSA (men >40) | <1.0 ng/mL considered optimal | Baseline for the theoretical prostate concern |
| Fasting Glucose / HbA1c | Glucose 75–85 mg/dL; HbA1c <5.4% | Detect additive blood-sugar effects |
| Lipid Panel | Triglycerides <80 mg/dL; HDL >55 mg/dL | Track possible lipid improvements |
| Blood Pressure | ~110–120 / 70–80 mmHg | Detect additive blood-pressure lowering |
Cadence: Baseline, recheck safety labs at 8–12 weeks, then every 6–12 months with continued use; reassess hormonal and functional markers at 8–12 weeks