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Herb

Holy Basil (Tulsi)

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Holy Basil (Tulsi). Adaptogenic basil used for stress and blood sugar.

How it works. Eugenol and ursolic acid modulate cortisol, COX-2, and insulin sensitivity.

What the research supports. 1 graded claims. Strongest: Reduces perceived stress and anxiety (moderate).

How much to take. Typical dose: 300–600 mg standardized.

Side effects and interactions. 1 medication interaction listed. No serious side effects listed at normal doses.

Stacking. Pairs well with A high-quality multivitamin, Omega-3 (EPA/DHA).

Common forms. Available as Standardized extract capsule, Liquid tincture (alcohol or glycerin), Powdered whole herb, Traditional decoction or tea.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Holy Basil (Tulsi). Anecdotes are not medical advice.

Holy Basil (Tulsi). Adaptogenic basil used for stress and blood sugar.

Key compound: eugenolC10H12O2 · 164.20 g/mol

What it is

Adaptogenic basil used for stress and blood sugar.

Food sources

Whole dried plant material (root, leaf, flower, or aerial parts depending on the species)Standardized hydroethanolic or aqueous extract (capsule, tincture, or tea)Powdered traditional preparation used in Ayurvedic, TCM, or Western herbal practice

Goals

Blood Sugar ManagementMood & Anxiety

How it works

Eugenol and ursolic acid modulate cortisol, COX-2, and insulin sensitivity.

Pathways

  • Eugenol
  • ursolic acid modulate cortisol, COX-2
  • and insulin sensitivity

Effects

  • ↓perceived stress and anxiety decreases

What the research supports

Reduces perceived stress and anxietymoderate

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
300–600 mg standardized
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodWith food
Best formMost evidence is based on the standardized extract capsule form.
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Side effects & interactions

Common side effects

  • GI upset

Medication interactions

Prescription medications (general)minor

Always disclose Holy Basil (Tulsi) use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
  • Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.

Common forms

  • Standardized extract capsule
  • Liquid tincture (alcohol or glycerin)
  • Powdered whole herb
  • Traditional decoction or tea

Key studies

8 studies cited in total.

PubMed: Holy Basil (Tulsi) — Reduces perceived stress and anxiety ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Holy Basil (Tulsi) and "Reduces perceived stress and anxiety". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Holy Basil (Tulsi) — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Holy Basil (Tulsi) and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Holy Basil (Tulsi) — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Holy Basil (Tulsi) and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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