Comparison
Ashwagandha vs Maca
Ashwagandha
Withania somnifera, the most clinically validated herbal adaptogen for stress and anxiety. Reduces serum cortisol by roughly 28% at 600 mg/day over 8 weeks. Modest evidence for sleep quality and testosterone in men. Choose the KSM-66 extract for the best-studied form.
Maca
Peruvian root (Lepidium meyenii) used for energy, mood, libido, and hormonal balance.
| Field | Ashwagandha | Maca |
|---|---|---|
| Category | adaptogen | adaptogen |
| Dose range | 300–600mg | 1500–3000mg |
| Half-life | 6h | — |
| Onset | — | — |
| Evidence | EVIDENCEA | EVIDENCEB |
| Safety | ●●●●● | ●●●●● |
| Legal (US) | USOTC | USOTC |
| PubMed refs | 650 | 260 |
The comparison in plain English
Auto-generated from dataAshwagandha and Maca are both in the adaptogen category respectively. Ashwagandha Withania somnifera, the most clinically validated herbal adaptogen for stress and anxiety. Maca Peruvian root (Lepidium meyenii) used for energy, mood, libido, and hormonal balance.
Bottom line
Ashwagandha (evidence A, safety 5/5) has a weaker evidence base than Maca (evidence B, safety 5/5). Ashwagandha has the slightly cleaner safety profile. For users new to either, the higher-evidence option is the safer first try.
Choose Ashwagandha if
Ashwagandha is the better fit when your goal aligns with its mechanism (Withanolides modulate GABA-A receptors and blunt the HPA-axis cortisol response) and the dose range (300–600mg) suits your protocol. Half-life is 6h.
Choose Maca if
Maca is the better fit when your goal aligns with its mechanism (Macamides and macaenes modulate HPA-axis cortisol response) and the dose range (1500–3000mg) suits your protocol. Half-life is —h.