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Holy Basil (Tulsi)

Stress adaptation · cortisol · immune

Moderate evidenceVegan18 studies on PubMedRead the research
Written to our editorial standards · reviewed against published research· Updated 30 May 2026
Last reviewed: May 30, 2026

Holy Basil: Stress adaptation · cortisol · immune. Ayurvedic adaptogen that gently lowers cortisol, supports immune resilience, and modestly aids blood sugar regulation. Standard dose 500 mg, taken in the morning, about $14/month. Evidence rating: moderate evidence.

Where to buy

Organic India Tulsi Holy Basil
Recommended
Organic India, Holy Basil
500 mg · Morning · ~$14/month

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All product options

Organic India Tulsi Holy BasilBestseller
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90 veg capsules · $15 · ★ 4.7
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60 capsules · $18 · ★ 4.6
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NOW Foods Holy Basil ExtractPremium
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90 veg caps · $13 · ★ 4.6
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Himalaya HoliBasilPremium
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What is Holy Basil?

Holy Basil, known as Tulsi in Sanskrit, has been revered in Ayurvedic medicine for over 3,000 years as the 'queen of herbs.' Unlike its culinary cousin sweet basil, holy basil is classified as an adaptogen, supporting the body's response to physical, chemical, and emotional stressors. Clinical research suggests benefits for cortisol regulation, blood sugar balance, immune resilience, and overall sense of well-being. Its active phytochemicals include eugenol, ursolic acid, and rosmarinic acid. Typical doses are 300-600 mg of leaf extract twice daily. It can also be enjoyed as a fragrant tea, an alternative for those preferring food-based supplementation.

Ayurvedic adaptogen that gently lowers cortisol, supports immune resilience, and modestly aids blood sugar regulation.

Stacks that include Holy Basil

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The Stress Stack
Calmer baseline, no sedation.

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Common questions

What is Holy Basil?
Holy Basil, known as Tulsi in Sanskrit, has been revered in Ayurvedic medicine for over 3,000 years as the 'queen of herbs.' Unlike its culinary cousin sweet basil, holy basil is classified as an adaptogen, supporting the body's response to physical, chemical, and emotional stressors. Clinical research suggests benefits for cortisol regulation, blood sugar balance, immune resilience, and overall sense of well-being. Its active phytochemicals include eugenol, ursolic acid, and rosmarinic acid. Typical doses are 300-600 mg of leaf extract twice daily. It can also be enjoyed as a fragrant tea, an alternative for those preferring food-based supplementation.
What is Holy Basil used for?
Stress adaptation · cortisol · immune. Ayurvedic adaptogen that gently lowers cortisol, supports immune resilience, and modestly aids blood sugar regulation.
What is the standard dose of Holy Basil?
500 mg, typically taken in the morning. Approximate cost is $14 per month.
Who should avoid Holy Basil?
Use extra caution, and speak to a clinician first, if you are pregnant or nursing.
How strong is the evidence for Holy Basil?
Moderate evidence for its primary uses. See the full study list on the research page.

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