---
title: "Basil or Holy Basil? | Herbadex"
description: "Related but different species: basil is a kitchen herb, holy basil (tulsi) is sold as a stress supplement. Evidence and warnings side by side."
language: en
url: https://herbadex.com/en/compare/basil-vs-holy-basil/
source: Herbadex (https://herbadex.com)
---

Comparisons

# Basil or Holy Basil?

Basil (Ocimum basilicum) and holy basil or tulsi (Ocimum tenuiflorum) are different species of the same genus. One is used as food, the other as a tea and supplement. The table is built from the sourced cards of both herbs.

| Aspect | Basil Ocimum basilicum | Holy Basil Ocimum tenuiflorum |
| --- | --- | --- |
| Strongest evidence | T Traditional use | B Limited clinical evidence |
| Needs | Digestion, Sleep, Stress & Mood | Sleep, Stress & Mood, Metabolism, Weight & Blood Sugar |
| Form | Dried Herb & Tea | Dried Herb & Tea |
| How to use | Add fresh or dried leaves to salads, sauces and dishes. | The leaf is taken by mouth as a tea or supplement. Oral use has been studied for up to 8 weeks; safety of longer use is unknown and there is no verified dose. |
| Pregnancy | Caution | Avoid |
| Breastfeeding | Caution | Avoid |
| Recommended minimum age | Not stated | Not stated |
| Drug interactions | No recorded interactions | Interactions reported |
| Duration limit | 2 weeks | 8 weeks |

## Which one, when?

### Basil

Traditionally used in food and as a tea for indigestion, bloating and loss of appetite. Kitchen amounts are generally safe; its oil and concentrated extracts are not for long-term use or pregnancy.

[Full card →](https://herbadex.com/en/herb/basil/)

### Holy Basil

Small, low-quality studies suggest possible benefit for stress and anxiety; it may lower blood sugar. Safety beyond 8 weeks is unknown; not used with an underactive thyroid.

[Full card →](https://herbadex.com/en/herb/holy-basil/)

## Good to know

-   Holy basil may slow blood clotting; people on blood thinners or facing surgery should ask a doctor first.
-   People on diabetes medicines should ask a doctor before starting holy basil.
-   Holy basil is not used during pregnancy, breastfeeding or when trying to conceive.

## Sources

1.  [Sweet basil (Ocimum basilicum L.): a review of its botany, phytochemistry, pharmacological activities, and biotechnological development](https://pubmed.ncbi.nlm.nih.gov/38140476/) Plants (Basel) · 2023 · Review Source accessed: October 21, 2026
2.  [Public statement on the use of herbal medicinal products containing estragole](https://www.ema.europa.eu/en/documents/public-statement/public-statement-use-herbal-medicinal-products-containing-estragole_en.pdf) EMA HMPC · 2023 · Official agency information Source accessed: October 21, 2026
3.  [Basil](https://www.ncbi.nlm.nih.gov/books/NBK501826/) NIH NLM Drugs and Lactation Database (LactMed) · 2006 · Official agency information Source accessed: October 21, 2026
4.  [Holy Basil](https://www.merckmanuals.com/home/special-subjects/dietary-supplements-and-vitamins/holy-basil) MSD Manual Consumer Version (Merck & Co.) · 2025 · Reference book Source accessed: October 24, 2026
5.  [The Clinical Efficacy and Safety of Tulsi in Humans: A Systematic Review of the Literature](https://doi.org/10.1155/2017/9217567) Evidence-Based Complementary and Alternative Medicine · 2017 · Systematic review Source accessed: October 24, 2026

This page is for information only and is not medical advice. If you take medication, are pregnant, or have a health condition, talk to your doctor or pharmacist before use.