Short answer: The main holy basil benefits for men are in the stress and sleep lane. In the best recent trial, adults taking 250 mg a day of a standardized holy basil (tulsi) extract for 8 weeks reported lower perceived stress and fewer insomnia symptoms than the placebo group. There is no good human evidence that holy basil improves testosterone or sexual performance, and animal studies suggest it may lower sperm count, so men trying to conceive should talk to a doctor before using it.
Key Takeaways
- Holy basil (Ocimum tenuiflorum, also called Ocimum sanctum or tulsi) is an Ayurvedic herb in the mint family, used mainly as an adaptogen for everyday stress.
- The strongest human data is for perceived stress and self-reported sleep quality; evidence for blood sugar, cholesterol and immunity is early and mixed in quality.
- Study doses range from 250 mg a day of a standardized extract to 1,000 to 1,200 mg a day of other extracts, usually for 6 to 8 weeks.
- Rat studies found lower sperm count and motility with holy basil leaf extract. Human data on male fertility is missing, so caution makes sense if you are trying for a baby.
- Holy basil may slow blood clotting and lower blood sugar. Check with a doctor if you take blood thinners or diabetes medication, and stop it 2 weeks before surgery.
What Holy Basil Is (and What It Is Not)
Holy basil is a close relative of the sweet basil used in cooking. It has a long history in traditional medicine in India and China, and some Hindus consider the plant sacred. Its leaves are also used in Southeast Asian food.[4][5] In modern supplements it appears as dried leaf tea, powdered leaf capsules, liquid tinctures and standardized extracts.
It is usually grouped with adaptogens: plants that are said to help the body handle stress without acting as a stimulant. That label is a traditional and marketing term, not a medical category. When you read about holy basil for men, keep the realistic scope in mind. It is a calming, stress-support herb. It is not a sexual performance herb, and no clinical trial has shown that it raises testosterone in men.
Common names you will see on labels
- Tulsi (or tulasi): the traditional Indian name, common on teas.
- Ocimum sanctum: the older botanical name, used in many studies.
- Ocimum tenuiflorum: the current botanical name, used in newer trials.
Holy Basil Benefits for Men: What Human Studies Show
Most of the claims you see online come from lab and animal work. The human evidence is smaller, so it helps to separate the two clearly.
Stress and perceived stress
The most useful trial for men dealing with work pressure is a 2022 randomized, double-blind, placebo-controlled study published in Frontiers in Nutrition.[1] Researchers gave 100 stressed adults aged 18 to 65 either 125 mg of a standardized holy basil extract twice daily (250 mg a day) or a placebo for 8 weeks. Scores on the Perceived Stress Scale fell by 37% in the holy basil group versus 19% with placebo, a statistically significant difference.
Hair cortisol, a marker of longer-term cortisol output, was also lower in the holy basil group by the end of the study. During a lab stress test, the holy basil group had lower salivary cortisol, blood pressure and stress ratings overall, although the changes over time did not differ significantly between groups.[1]
Two caveats matter here. First, only 16 of the 50 people in the holy basil group were men, so the results are not male-specific. Second, the trial was funded by the company that makes the extract, which is common in supplement research but worth knowing.
Sleep
In the same trial, scores on the Athens Insomnia Scale dropped 48% with holy basil versus 27% with placebo.[1] That is a meaningful improvement in how people rated their own sleep. However, sleep measured by wrist trackers (total sleep time and sleep efficiency) did not differ significantly between the two groups. The fair reading: people felt they slept better, but objective sleep changes were not clearly shown.
Blood sugar, cholesterol and immunity
A 2017 systematic review in Evidence-Based Complementary and Alternative Medicine identified 24 human studies of tulsi covering blood sugar and lipids, blood pressure, immune response, mood, fatigue and cognition, and concluded that the results were generally favorable.[2] Cleveland Clinic points out an important limit of that review: of those 24 studies, only seven were judged high quality and only three were double-blind.[4] RxList rates the evidence for anxiety, stress and diabetes as insufficient to rate.[6]
So the metabolic findings are interesting but not strong enough to rely on. If you are managing blood sugar, blood pressure or cholesterol, that work belongs with your doctor, and holy basil should never replace prescribed treatment.
What about testosterone and sex drive?
There are no solid human trials showing that holy basil improves testosterone, libido or erections. The animal data points the other way, which is covered in the safety section below. If low energy, low libido or mood changes are your main concern, read about the signs of low testosterone and get a blood test before trying herbs.
How Holy Basil Is Thought to Work
Researchers believe holy basil acts on the stress response rather than on hormones that drive performance. The 2022 trial measured cortisol in hair and saliva because cortisol is the main hormone of the stress (HPA) axis, and lower cortisol readings in the holy basil group fit that idea.[1] The plant also contains compounds such as eugenol and ursolic acid, which have been studied mostly in the lab and in animals.[3][4] Those findings do not prove the same effects in people.
In practice, the most honest framing is this: holy basil may take some edge off daily stress and help some people feel they sleep better. It will not fix poor sleep habits, heavy alcohol use or overwork. A consistent sleep routine still does more heavy lifting than any herb.
Holy Basil Dosage: How Much Has Been Studied
There is no officially established dose or daily upper limit for holy basil.[4] The table below lists the forms and amounts used in studies or recommended by the sources reviewed for this article.
| Form | Amount used | Duration | Context |
|---|---|---|---|
| Standardized extract (Holixer) | 125 mg twice daily (250 mg/day) | 8 weeks | Stress and sleep trial in adults[1] |
| Leaf extract | 500 mg twice daily after meals | 60 days | Anxiety research[6] |
| Specific Indian extract | 400 mg in the morning, 800 mg at night | 6 weeks | Stress research[6] |
| Tea (dried leaves or flowers) | Steep in boiling water up to 10 minutes, then strain | Daily use | Form preferred by a Cleveland Clinic dietitian[4] |
Practical tips
- Follow the label of a standardized product rather than mixing several holy basil products.
- Give it time: the positive trial ran for 8 weeks, so judge results over weeks, not days.
- Take it with food if it upsets your stomach; digestive complaints were the most common side effect reported.[1]
- Keep courses short unless your doctor agrees otherwise. RxList considers it possibly safe for up to six weeks, and long-term safety is not known.[6]
Holy Basil Side Effects and Safety for Men
In short human studies, holy basil has been well tolerated. The 2017 review found that only one of 24 studies reported side effects, described as occasional nausea.[2] In the 2022 trial, there were no serious adverse events; digestive upset and headache were the most common complaints, and they occurred at similar rates with placebo.[1] Still, there are four points men should weigh.
1. Possible effect on sperm and male fertility
This is the most important caution for men. A rat study published in the Indian Journal of Pharmaceutical Sciences found that holy basil leaf extract caused a significant drop in sperm count and sperm motility, and the authors linked this to reduced androgen (male hormone) activity in the epididymis, where sperm mature.[3] WebMD also notes that animal research suggests holy basil may decrease fertility.[5]
Animal results do not prove the same effect in men, and no human study has tested it. But if you and your partner are trying to conceive, the safest choice is to skip holy basil supplements or ask your doctor first.
2. Bleeding risk
Holy basil might slow blood clotting. RxList lists a moderate interaction with blood thinners and antiplatelet drugs such as aspirin, clopidogrel, heparin and warfarin, and advises stopping holy basil at least 2 weeks before scheduled surgery.[6]
3. Low blood sugar
Holy basil may lower blood sugar.[5] Men taking diabetes medication should talk to their doctor before adding it, since the combined effect could push glucose too low.
4. Sedation and other interactions
Holy basil seed oil might add to the drowsiness caused by pentobarbital, and animal research suggests holy basil may change the effects of diazepam and scopolamine.[5][6] People allergic to plants in the mint family should avoid it.[5]
Who Should Avoid Holy Basil or Talk to a Doctor First
- Men trying to father a child, because of the animal fertility data.
- Anyone taking warfarin, heparin, clopidogrel, daily aspirin or other blood thinners.
- Anyone taking insulin or other diabetes medication.
- Anyone with surgery scheduled in the next 2 weeks.
- Anyone taking sedatives or anxiety medication.
- Pregnant or breastfeeding partners who may share supplements in the home; sources advise avoiding holy basil in pregnancy and while breastfeeding.[4][6]
Also see a clinician if stress is affecting your sleep, mood or work for more than a few weeks. Ongoing anxiety, insomnia or burnout deserve a proper assessment, not just a supplement.
Holy Basil and Ultra Bann
Holy basil is not an ingredient in Ultra Bann. Ultra Bann is a natural male vitality supplement by DL Bioproducts, taken as one capsule every 2 days. Each serving contains seven botanicals with every amount listed on the label and no proprietary blend: Thai Butea superba 345 mg, Panax ginseng 110 mg, Cynomorium songaricum 85 mg, black ginger (Kaempferia parviflora) 85 mg, tongkat ali 85 mg, epimedium (horny goat weed) 45 mg and reishi (Ganoderma lucidum) 45 mg, for 800 mg in total. You can read the full label on the Ultra Bann ingredients page.
If you are interested in herbs often discussed for calm and recovery, Ultra Bann’s guides on reishi and Panax ginseng for men cover what the research says about those two ingredients. If you plan to take holy basil and another herbal product together, show both labels to your doctor or pharmacist first. First orders of Ultra Bann include free US shipping and a 60-day money-back guarantee.
Frequently Asked Questions
Is holy basil good for men?
For stress and self-reported sleep, the early human evidence is encouraging, mostly from one 8-week trial using 250 mg a day of a standardized extract. For testosterone, libido or athletic performance, there is no good human evidence. Men trying to conceive should be cautious because of animal studies showing lower sperm count.
Does holy basil lower testosterone?
No human study has shown that. In a rat study, holy basil leaf extract reduced sperm count and motility and was linked to reduced androgen activity in the epididymis. Whether this happens in men at normal supplement doses is unknown, which is why a doctor’s input is wise if fertility matters to you.
How long does holy basil take to work?
In the main stress trial, results were measured after 8 weeks of daily use. Most studies ran 6 to 8 weeks, so expect a gradual effect over several weeks rather than an immediate change.
Can I drink tulsi tea every day?
Many people do, and a Cleveland Clinic dietitian prefers tea over concentrated supplements. Long-term safety of daily use has not been well studied, so talk to your doctor if you take blood thinners, diabetes medication or sedatives.
Is holy basil the same as regular basil?
No. They are related plants in the same family, but holy basil (Ocimum tenuiflorum) is a different plant from the sweet basil used in everyday cooking, and its leaves have a bitter, spicy taste.[4]
References
- Lopresti AL, Smith SJ, Metse AP, Drummond PD. A randomized, double-blind, placebo-controlled trial investigating the effects of an Ocimum tenuiflorum (Holy Basil) extract (Holixer) on stress, mood, and sleep in adults experiencing stress. Frontiers in Nutrition. 2022;9:965130. frontiersin.org
- Jamshidi N, Cohen MM. The Clinical Efficacy and Safety of Tulsi in Humans: A Systematic Review of the Literature. Evidence-Based Complementary and Alternative Medicine. 2017;2017:9217567. Summary (AOR)
- Srinivasulu K, Changamma C. A Study on the Effect of Ocimum sanctum (Linn.) Leaf Extract and Ursolic Acid on Spermatogenesis in Male Rats. Indian Journal of Pharmaceutical Sciences. 2017;79(1):158 to 163. ijpsonline.com
- Cleveland Clinic Health Essentials. Holy basil (tulsi) benefits. health.clevelandclinic.org
- WebMD. Holy Basil: Uses and Risks. webmd.com
- RxList. Holy Basil. rxlist.com
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. This article is for information only and is not medical advice.
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