Comparison
Ashwagandha vs Tulsi (Holy Basil)
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.
Tulsi (Holy Basil)
Sacred Ayurvedic herb (Ocimum sanctum/tenuiflorum) used for stress, mood, and metabolic health.
| Field | Ashwagandha | Tulsi (Holy Basil) |
|---|---|---|
| Category | adaptogen | adaptogen |
| Dose range | 300–600mg | 300–600mg |
| Half-life | 6h | — |
| Onset | — | — |
| Evidence | EVIDENCEA | EVIDENCEB |
| Safety | ●●●●● | ●●●●● |
| Legal (US) | USOTC | USOTC |
| PubMed refs | 650 | 380 |
The comparison in plain English
Auto-generated from dataAshwagandha and Tulsi (Holy Basil) are both in the adaptogen category respectively. Ashwagandha Withania somnifera, the most clinically validated herbal adaptogen for stress and anxiety. Tulsi (Holy Basil) Sacred Ayurvedic herb (Ocimum sanctum/tenuiflorum) used for stress, mood, and metabolic health.
Bottom line
Ashwagandha (evidence A, safety 5/5) has a weaker evidence base than Tulsi (Holy Basil) (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 Tulsi (Holy Basil) if
Tulsi (Holy Basil) is the better fit when your goal aligns with its mechanism (Eugenol, ursolic acid, and rosmarinic acid modulate the HPA-axis cortisol response, support GABA tone for the calming effect, and have antioxidant effects) and the dose range (300–600mg) suits your protocol. Half-life is —h.