Quick Verdict
Zinc
Essential trace mineral for 300+ enzymes. Critical for testosterone, immune function, protein synthesis. Most athletes a
Evidence: strong (500+ studies)
Ashwagandha (KSM-66)
Ayurvedic adaptogen herb, most researched for cortisol reduction, testosterone support, and stress resilience.
Evidence: strong (40+ studies)
Side-by-Side Comparison
| Zinc | Ashwagandha (KSM-66) | |
|---|---|---|
| Category | minerals | adaptogens |
| Evidence Level | strong | strong |
| Studies | 500+ | 40+ |
| Dosage | 15-40 mg | 300-600 mg |
Stack Compatibility
Zinc: Magnesium (sleep + hormone synergy), Vitamin D3, Copper (if long-term Zn use), Boron
Ashwagandha (KSM-66): Magnesium, L-Theanine, Rhodiola Rosea, Zinc
Which Should You Choose?
Both serve different purposes. Choose based on your priority.