6 Shocking Side Effects of Tulsi ( Holy Basil)

Tulsi has several adverse effects that may make you reconsider using it. Tulsi, often known as holy basil, is thought to be a magical cure-all herb. Given the wide range of benefits it provides, this is unsurprising.

Tulsi is a common ingredient in many home treatments. It’s so well-known that your elders may still encourage you to eat it because of its health-promoting benefits.

Tulsi has a wide range of health advantages. This herb is recommended by Ayurveda for its health-promoting properties. Tulsi, on the other hand, has some side effects that you should be aware of.

It may have an impact on your fertility or the efficacy of certain treatments. As a result, you should be aware of the potential negative effects of tulsi.

Tulsi’s adverse effects, as well as its safety and potential drug interactions, are discussed in this article. Continue reading.

The 6 Most Dangerous Side Effects of Holy Basil

Let’s take a peek at some of Tulsi’s unexpected adverse effects:

tulsi side effects

1. Eugenol Overdose

Tulsi’s major ingredient is eugenol.

Excessive ingestion of Tulsi has been linked to eugenol overdose. It is possible to ingest too much eugenol, which could result in poisoning.

Clove cigarettes and several food flavorings contain eugenol.

Symptoms- Coughing up blood, fast breathing, and blood in the urine.


2. May Lower Blood sugar levels (Hypoglycemia)

Hypoglycemia is a condition in which blood sugar levels are abnormally low. It is not an illness, but it can be a symptom of a health concern.

Tulsi is used to reduce blood sugar levels in persons who have high blood sugar. Tulsi, on the other hand, may cause an extreme drop in blood sugar in those with diabetes or hypoglycemia who are taking medication. This is one of the most hazardous Tulsi adverse effects that should be avoided.

Symptoms- Paleness, dizziness, hunger, weakness, and irritability are some of the symptoms.

3. Tulsi during pregnancy

tulsi side effect during pregnancy

Excessive Tulsi use by pregnant women could have long-term consequences for both the mother and the baby. Tulsi may potentially cause responses in expectant mothers.

Increased uterine contractions in pregnant women are another negative effect of holy basil. This Tulsi side effect can cause problems during labor or menstruation.

Symptoms- Backache, cramps, diarrhea, and bleeding are some of the symptoms you may experience.

Any substance, no matter how natural, has negative side effects. It could be used to treat a specific ailment. It could also have excellent therapeutic powers. However, this does not mean it is without adverse effects.

4.  Blood Thinning

Tulsi is known for its ability to thin the blood in our bodies. As a result, it shouldn’t be combined with other anti-clotting drugs.

Tulsi should be avoided by people who are already using blood-thinning drugs like warfarin or heparin. Tulsi can amplify the blood-thinning effects of prescription medications, resulting in more serious problems.

Symptoms- Bruising and/or bleeding for an extended period.

5. Has the Potential to Affect Fertility

Tulsi has been linked to male infertility.

Male rabbits were used in the experiments. The rabbits were separated into two groups: test and control. Over 30 days, the test group rabbits were given two grams of Tulsi leaves. The sperm count of test group rabbits was found to be significantly lower.


6. Drug Interactions

tulsi may cause drug interactions

Tulsi may interfere with the way our bodies digest some medications.

The liver’s enzyme system, cytochrome P450, is used to do this. The levels of medicines in the blood may rise or fall as a result of this.

Both diazepam and scopolamine are medications that aid with nausea, vomiting, nervousness, and anxiety. Tulsi may help to lessen the amnesic effects of these two medicines.

Symptoms- Heartburn, dizziness, headaches, and nausea are all common side effects.


Tulsi is a fragrant herb that is often used in home treatments for several diseases. Overconsumption, on the other hand, can result in a variety of issues. Tulsi has a variety of adverse effects, including altering fertility and perhaps reducing blood sugar levels. There’s a chance you’ll get eugenol poisoning, which means your urine and cough will include blood. Tulsi can cause allergic reactions or interfere with the effectiveness of some drugs, including blood thinners, diazepam, and scopolamine. To avoid such issues, try to limit your consumption or avoid it totally if at all possible.


This article provides general information about the topic and is not to be taken as medical advice or as an alternative to medical advice, treatment, and/or diagnosis. Always consult with your doctor before trying out any of the remedies/recipes suggested in the blog post.

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