Herbs for men
Black seed oil benefits for men: sperm, testosterone and uses
Black seed, or *Nigella sativa*, has been used in traditional medicine across Africa, the Middle East and Asia for centuries. Here are the evidence-based black seed oil benefits for men.
In short: Black seed oil contains thymoquinone, an antioxidant and anti-inflammatory compound. A small trial in infertile men found black seed oil improved sperm count, motility and semen volume over two months. Some studies also suggest modest benefits for blood pressure and blood sugar. Evidence for testosterone and erections is limited.
What is black seed oil?
Black seed oil is pressed from the small black seeds of the *Nigella sativa* plant, also called black cumin or kalonji. Its main active compound, thymoquinone, has been widely studied in the laboratory.
What research shows
Sperm quality
In a randomised, placebo-controlled trial, infertile men who took 2.5 ml of black seed oil twice daily for two months had better sperm count, motility and semen volume than men on placebo. This is promising, though the study was small. See how to increase sperm motility.
Testosterone
Animal studies suggest black seed may support testosterone, but human evidence is weak.
Blood pressure and blood sugar
Reviews suggest black seed may modestly lower blood pressure, fasting blood sugar and cholesterol. These effects support the blood vessels involved in erections.
Erections
There are no good human trials on erectile dysfunction.
How to use black seed
- Black seed oil: studies have used about 1 to 5 ml a day. Start with a small amount, as the taste is strong.
- Whole seeds: sprinkle on bread, salads or yoghurt, or add to curries.
- Choose cold-pressed oil from a reputable supplier.
Safety
- Generally safe in food amounts and short-term use.
- May cause stomach upset or nausea.
- Applied to skin, it can cause allergic rashes.
- It may lower blood pressure and blood sugar, so check first if you take medicine for these.
- It may affect blood clotting, so stop before surgery.
- Rare reports of kidney problems exist with high doses.
Where it fits
Black seed oil may be worth considering for men focused on fertility, as part of a broader plan that includes healthy weight, less alcohol, no smoking and keeping the testicles cool. See signs of male infertility and how to increase semen volume naturally. A naturopath can advise whether it suits you.
Why men choose our natural approach
Walk in or consult remotely
Walk in at Buccleuch, Sandton, with parking available, or consult by phone or video from anywhere in South Africa.
Natural and non-surgical
Herbal remedies and practical guidance, with no injections or surgery.
Faster appointments
Enquiries answered 24/7, with same-day appointments often available.
Transparent pricing
Consultations are R2,500, with any remedy costs confirmed before you commit.
Private self-check: 5 quick questions
Answer these honestly before you try anything new or book. They help you describe what is happening and get more from your first consultation.
- Have you noticed a change in the amount, colour or consistency of your semen?
- Do you feel pain or burning during or after ejaculation?
- Have you had trouble ejaculating, or does it take much longer than before?
- Do you smoke, drink most days, or sit for long hours?
- Are you and your partner trying for a baby?
Pain, burning, blood in the semen or a sudden change should be checked by an appropriately registered medical professional first. For lifestyle-related changes, a naturopath can help you build a natural plan to support healthy function.
What happens at your first consultation
- Walk in or book online, call +27 10 205 9855 or WhatsApp +27 81 823 1313. In Gauteng, walk in at 199 Vanessa Street, Buccleuch, Sandton, where parking is available. Outside Gauteng, choose a confidential phone or video consultation. Enquiries are answered 24/7.
- Talk privately with a naturopath about your symptoms, health history, lifestyle and goals.
- Receive a personalised natural plan, with any remedy costs confirmed upfront.
- Follow up in person or remotely so your progress is reviewed and your plan adjusted.
Your health and safety
Our naturopaths use natural remedies and lifestyle support, and always check your health history and current medicines first. If anything needs medical attention we tell you honestly and refer you to an appropriately registered medical professional. Avoid unregistered “enhancement” products sold online or at markets, as SAHPRA has warned that some contain hidden ingredients.
Seek urgent medical care for chest pain, an erection lasting more than four hours, sudden weakness or other sudden symptoms.
Consultation price
A consultation is R2,500, in person or remote, and your naturopath confirms any further costs before you go ahead. See our men’s clinic prices for details.
Frequently asked questions
What does black seed oil do for men?
It provides antioxidants and may support sperm quality, blood pressure and blood sugar.
Does black seed oil increase sperm count?
A small trial in infertile men found improved sperm count, motility and volume after two months.
Does black seed oil increase testosterone?
Evidence in men is weak. Most support comes from animal studies.
How much black seed oil should a man take?
Studies used about 1 to 5 ml a day. Check first if you take blood pressure or diabetes medicine.
How much does a consultation cost?
A consultation is R2,500, and any remedy costs are confirmed with you before you go ahead.
Book your consultation today
Get personalised, natural support from a naturopath. Walk in at our Sandton practice, or book a remote consultation if you live outside Gauteng.
References and further reading
Reviewed by George Mulaudzi, Naturopath. This page is general information and does not replace a personal consultation. If you have chest pain, sudden symptoms or a medical emergency, seek urgent medical care.
