Herbs and supplements for fertility: what the evidence says about 29 of them

Read this before the list

Herbal products in India are largely unregulated for content and dose. Studies have repeatedly found heavy metals — lead, mercury, arsenic — in some traditional preparations, and undeclared pharmaceutical ingredients in others. That is a real risk in the months before conception, when metals cross to a developing baby.

Nothing here treats blocked tubes, absent ovulation, or a very low sperm count. If you have been trying for a year (six months at 35 or over), the useful step is testing, not a new supplement.

Tell your doctor everything you are taking. Several of these interact with thyroid medicines, diabetes medicines, blood thinners and fertility drugs, and some must be stopped once pregnant.

The ones with reasonable evidence

Folic acid — not a herb, and the only supplement that is genuinely non-negotiable: it prevents neural tube defects and must start at least a month before conception. Myo-inositol — reasonable evidence for restoring ovulation and improving egg quality in PCOS. Vitamin D — worth testing and correcting; deficiency is near-universal in India and is associated with poorer fertility outcomes.

Coenzyme Q10 — modest evidence for egg and sperm quality, particularly at older ages. Zinc and selenium — support sperm production, useful where diet is short. L-carnitine — some evidence for sperm motility. Omega-3 fats — general benefit, reasonable evidence for sperm quality.

Ashwagandha — the best-studied Indian herb here, with small trials suggesting improved sperm count and motility in men. Evidence in women is thin. Avoid in pregnancy and in thyroid disease without medical advice.

Iron — where anaemia is present, correcting it matters for conception and for early pregnancy. Test rather than guess. B12 — deficiency is common in Indian vegetarians and affects ovulation and pregnancy outcomes.

Traditional, plausible, unproven

Shatavari, gokshura, kapikacchu (mucuna), safed musli, ashoka, lodhra, guduchi (giloy), amla, methi (fenugreek), til (sesame), khajoor (dates), pumpkin seeds, walnuts, saffron, tulsi, moringa, giloy, dashamoola preparations, aloe vera juice and shilajit all appear in fertility advice across India.

For most of these the honest position is: traditional use is long, human trial evidence is thin or absent, and the doses in commercial products are unstandardised. As food — dates, til, amla, methi, walnuts, pumpkin seeds, moringa — they are nutritious and entirely reasonable to eat.

As concentrated supplements, the calculation changes: unknown dose, unknown purity, and real cost. If you want to take one, buy from a manufacturer with proper quality certification, tell your doctor, and stop when you conceive unless specifically advised otherwise.

The ones to avoid, and the money question

Avoid while trying to conceive or once pregnant unless a doctor specifically advises: high-dose vitamin A and its relatives (a known cause of birth defects), papaya latex and raw papaya preparations, aloe vera taken internally, dong quai and black cohosh, high-dose liquorice, tribulus in high doses, and any product promising 'guaranteed conception' or 'gender selection' — the second of those is a criminal offence in India under the PCPNDT Act.

Avoid anything whose ingredients are not fully declared, anything sold with a testimonial rather than a label, and any bhasma or metal-based preparation without a qualified practitioner and quality certification.

The money point is worth stating plainly: Indian couples routinely spend large sums on herbal fertility packages over one to two years, during which ovarian reserve declines and treatable causes go undiagnosed. If a year of trying has passed, the highest-value spend is a semen analysis, a thyroid test and a tubal test — collectively cheaper than most herbal courses.

When to see a doctor

Before starting any supplement if you have thyroid disease, diabetes, high blood pressure, PCOS, a bleeding disorder, or take any regular medicine — interactions are the main risk.

Stop and seek care for: allergic reaction, jaundice or yellowing of the eyes (herbal products are a recognised cause of liver injury), severe abdominal pain, or unusual bleeding. And seek fertility assessment after 12 months of trying, or 6 months if the woman is 35 or over, regardless of what you are taking.

This article is general information, not medical advice, and is no substitute for personal medical advice. For any decision about your or your child's health, please consult your doctor.

Frequently asked questions

Q: My doctor and my vaidya are giving different advice. — Tell each one what the other has prescribed. The dangerous scenario is a herbal preparation with an undeclared hormonal or metal content taken alongside a prescribed fertility drug. A qualified ayurvedic practitioner will want to know about the medical treatment too.

Q: Is ashwagandha safe for women trying to conceive? — Evidence for benefit in women is weak, and it is not recommended in pregnancy. If you take it, stop when you get a positive test, and avoid it entirely with thyroid disease unless your doctor approves.

Q: Are fertility 'panchakarma' packages worth it? — They may improve general wellbeing, and they do not open blocked tubes or produce sperm. Judge them as wellness spending rather than treatment, and do not let them delay investigation.

Q: What should we take while trying? — For the woman: folic acid, plus correction of iron, vitamin D and B12 if tested low. For the man: a healthy diet, no tobacco or alcohol, and correction of any tested deficiency. That is the evidence-backed list.