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Holy Basil (Tulsi)

Holy Basil, also known as Tulsi, is an Ayurvedic adaptogen known for its potential to reduce stress & blood glucose levels, & improve immune function.

adaptogenstressmetabolicanti inflammatory

Evidence last reviewed: 05 Apr 2026

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Evidence
3 records
3 recordsBest grade:Moderate
Biomarkers
Cognitive FunctionNeuroprotection / NGFImmune Function

Moderate evidence supports Holy Basil's role in enhancing immune function through various immune markers. However, cognitive benefits are less certain, with only low-quality evidence available. Further studies are needed to strengthen these claims.

immune-function
healthy volunteers · RCT
Moderate

Tulsi leaves extract demonstrated immunomodulatory effects.

Dose: 300 mgForm: Ethanolic Extract
Citation: Devpura et al. (2021). Randomized placebo-controlled pilot clinical trial on the efficacy of ayurvedic treatment regime on COVID-19 positive patients.
cognitive-function
general population · Systematic review
Low

Tulsi is noted for its potential neuroprotective & cognitive-enhancing effects.

Dose: 600 mg
Citation: Kushwah et al. (2023). Herbal Therapeutics for Alzheimer's Disease: Ancient Indian Medicine System from the Modern Viewpoint.
Discusses potential benefits in Alzheimer's disease.
immune-function
healthy volunteers · RCT
Moderate

Tulsi extract significantly increased levels of IFN-γ, IL-4, T-helper cells, & NK-cells.

Dose: 300 mgDuration: 4 weeksForm: Ethanolic ExtractTiming: on empty stomach
Citation: Megalaa et al. (2018). A comparative evaluation of the anticaries efficacy of herbal extracts (Tulsi and Black myrobalans) and sodium fluoride as mouthrinses in children: A randomized controlled trial.
Stacks containing Holy Basil (Tulsi)
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stressadaptogencalm

Stress & Adaptogen Support

by@athlete

Holy basil & eleuthero are combined to support stress reduction & adaptogenic benefits. Holy basil is known for its calming effects, while eleuthero enhances the body's resilience to stress.

Holy Basil (Tulsi)
300mg
Eleuthero (Siberian Ginseng)
400mg
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stressmoodanxiety

Stress Reduction and Mood Balance

by@athlete

Combining Holy Basil with L-Theanine can reduce stress and balance mood. Holy Basil is an adaptogen that helps manage stress, while L-Theanine promotes relaxation without sedation.

Holy Basil (Tulsi)
300mg
L-Theanine
100mg
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Community Insights
Forms & usage▾
How to take it

Take 300-600 mg of Tulsi extract daily, preferably with meals.

Ethanolic Extract
Commonly used in studies for its bioactive compounds.
Alcoholic Extract
Used traditionally and in some studies for immune modulation.
Essential Oil
Used for antimicrobial purposes.
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