Holy Basil (Tulsi)

Adaptogen

Also known as: Tulsi, Ocimum tenuiflorum, Ocimum sanctum, Holy Basil, Holy Basil (Tulsi) for Adrenals

Grade B

💊 300-600mg extract or 2-3 cups tea🎯 7 primary uses🔗 3 synergies⚠️ Review warnings

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Levels upStress & Mood+50 pts

Overview

Ayurvedic herb specifically effective for cortisol reduction and stress adaptation.

Primary Uses

Stress adaptationCortisol balanceBlood sugarRespiratoryCortisol reductionCortisol modulationAdrenal support

Frequently Asked About Holy Basil (Tulsi)

How much Holy Basil (Tulsi) should I take?

The typical effective range is 300-600mg extract or 2-3 cups tea. Individual needs vary based on age, body weight, diet, and goals — start at the lower end and adjust based on response. Always consult a healthcare provider before starting a new supplement.

When is the best time to take Holy Basil (Tulsi)?

Morning or divided. Consistency matters more than perfect timing — pick a daily anchor (e.g. with breakfast or before bed) and stick with it.

Should I take Holy Basil (Tulsi) with food?

Either.

Does Holy Basil (Tulsi) interact with medications?

Yes — known interactions include Diabetes medications and Blood thinners. If you take any prescription medication, talk to your doctor or pharmacist before starting Holy Basil (Tulsi).

What does Holy Basil (Tulsi) pair well with?

Holy Basil (Tulsi) stacks well with Ashwagandha, Rhodiola, and Bacopa — these combinations either improve absorption or work synergistically toward common goals.

Who should not take Holy Basil (Tulsi)?

Holy Basil (Tulsi) should be avoided or used with caution by people with Pregnancy (may be abortifacient). Pregnant or breastfeeding women should consult a healthcare provider before use.

What are the side effects of Holy Basil (Tulsi)?

Most people tolerate Holy Basil (Tulsi) well. The most commonly reported side effects are Generally well tolerated. Side effects are usually dose-dependent — lowering the dose often resolves them.

Dosage

Typical range

300-600mg extract or 2-3 cups tea

Timing

Morning or divided

With food

Either

Duration

Safe long-term

Special Populations

Daily stress

Research & Studies

Search the literature now

We haven’t curated landmark studies for Holy Basil (Tulsi)yet — one-click into the primary literature here. PubMed (RCTs) is usually the highest-signal starting point.

Search Holy Basil (Tulsi) research

PubMed (RCTs) ↗Randomized trials PubMed (all) ↗Full literature Cochrane Reviews ↗Systematic reviews Examine.com ↗Research summaries

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Mechanism of Action

• Modulates cortisol response
• Antioxidant effects
• Adaptogenic via HPA axis

Evidence Quality

Evidence Grade B

Good evidence for stress and blood sugar

Safety & Contraindications

Serious Warnings

• May lower blood sugar

Contraindications

• Pregnancy (may be abortifacient)

Common Side Effects

• Generally well tolerated

Pregnancy & Breastfeeding

Avoid

Liver & Kidney Notes

No concerns

Interactions

💊 Medications

• Diabetes medications
• Blood thinners

🧪 Supplements

• Stacks with other adaptogens

🍽️ Food & Alcohol

• Pleasant as tea

Stacking & Synergies

Pairs Well With

Ashwagandha ↗Rhodiola ↗Bacopa ↗

Avoid Combining With

Nothing specific

Best Goal Synergies

Daily adaptogenic support

Buying Guide

What to Look For

• Organic sourcing

Standardization Markers

Ursolic acid content

Adulteration risk

Low

Practical Notes

• Excellent daily tonic
• Good as tea ritual
• Particularly good for cortisol
• Tea form is pleasant ritual
• Gentler adaptogen
• Good for cortisol modulation
• Traditional Ayurvedic sacred herb

Related Guides

In-depth guides covering Holy Basil (Tulsi) — protocols, comparisons, and use cases.

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Last reviewed: September 2026 by the Formulate Research Team. Sources cited above; methodology and scoring criteria published here.

Cite this page

Formulate Research Team. (2026, September). Holy Basil (Tulsi) — Evidence-Based Supplement Guide. Formulate Supplement Encyclopedia. https://app.formulate-health.app/learning/supplements/holy-basil

Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.