Evidence checked: 19 July 2026
Written by Charles Gumbley, BHSc (Clinical Nutrition), DipHSc (Western Herbal Medicine).
Fertility supplements for men are marketed to support sperm health, sperm count, sperm motility and the chances of conception. The question is whether a laboratory change leads to pregnancy or live birth. Australian guidance says some antioxidants and vitamins may change sperm parameters, but evidence is not strong enough for routine, ingredient-specific recommendations.[1]
For couples trying to get pregnant or hoping to start a family, a dietary supplement should not replace assessment of both partners. Male fertility vitamins cannot diagnose the cause or guarantee a shorter fertility journey.
Medical disclaimer: This content is for general educational purposes only and is not intended as personalised medical advice. If you have specific medical concerns, take medication or are trying to conceive, consult a qualified health professional before starting a new supplement.
Clinical bottom line: Do not delay assessment while trying pills. What causes male infertility can include varicocele, obstruction, infection, genetic conditions, cancer treatment, anabolic steroids, testosterone therapy, medicines, heat exposure, smoking, alcohol, obesity and endocrine disease. Some need time-sensitive care.
Male fertility supplements start with assessment
Male fertility is a couple-level outcome, not a label result from one product. A semen analysis assesses volume, sperm concentration, motility and morphology, but results vary between samples. History, examination, repeat testing, hormones, imaging or genetic assessment may be needed.[1]
Seek earlier medical review for testicular pain, swelling or a lump, absent or very low sperm concentration, ejaculation problems, previous undescended testes, chemotherapy, pelvic surgery or known genetic risk. Couples should also seek timely assessment when pregnancy has not occurred after the clinically appropriate interval for their ages and history.
Testosterone therapy must not be prescribed to men with reproductive intent because it suppresses pituitary signals and sperm production. Anabolic steroids can have the same effect.[1]
Sperm health, semen analysis and male infertility
Healthy sperm function and seminal fluid depend on production in the testes, maturation, transport and ejaculation. Oxidative stress occurs when reactive oxygen species exceed antioxidant defences, which may cause free radical damage to membranes or DNA. This makes supplementation plausible, but does not prove improved live birth.
In the 2022 Cochrane review, antioxidants had very low-certainty evidence for live birth. When high-risk-of-bias studies were removed, there was no clear evidence of benefit. Mild gastrointestinal discomfort may be more common.[2] A separate randomised trial found no significant improvement in live birth with a combined antioxidant treatment.[3]
Antioxidant fertility supplements and sperm evidence
Male fertility supplement studies use different combinations of vitamin C, vitamin E, zinc, selenium, coenzyme Q10, carnitine, folate and omega-3s. This makes it difficult to identify which nutrient, if any, caused a change.
Some trials of supplements to improve sperm quality report changes in motility, but laboratory outcomes are not interchangeable with pregnancy or a healthy birth. The Australian guideline advises that specific routine recommendations cannot be made.[1]
Supplements can also overlap. A multivitamin, fertility formula and separate micronutrient may duplicate zinc, trace minerals, folic acid or fat-soluble vitamins. More is not automatically better, and excess intake can cause toxicity or medicine interactions.
Zinc, selenium and vitamin C nutrients
Zinc, selenium and vitamin C have normal roles in reproduction, protective enzyme systems or cell division. A deficiency can matter, but male infertility does not prove that one of these key nutrients is low. Prenatal vitamins are formulated for pregnancy; vitamins for men need a separate clinical rationale.
Test when symptoms, diet, malabsorption, medicines or another risk justify it. Correcting a verified deficiency is different from giving high amounts to someone who is replete. Selenium excess can cause hair and nail changes, gastrointestinal symptoms and nerve problems; too much zinc can cause nausea and copper deficiency.
Eating a healthy diet with protein foods, vegetables, fruit, whole grains, legumes, nuts and zinc rich foods supports nutrient adequacy. It does not guarantee conception.
Ashwagandha and male fertility supplement safety
Ashwagandha is promoted for testosterone levels, stress and sperm quality, but small extract-specific studies do not establish a routine fertility treatment. On 7 July 2026, the TGA updated its warning about a very rare risk of liver injury from Withania somnifera.[4]
Stop it and seek medical advice for yellow skin or eyes, dark urine, unusual tiredness, weakness, abdominal pain, loss of appetite, or persistent nausea or vomiting. People with current or previous liver disorders should avoid self-starting it. Herbal products may interact with medicines and are not automatically safe in pre-conception care.
Pre-conception steps that support male fertility
Lifestyle changes can address modifiable risks without promising to boost male fertility. Priorities include stopping smoking and recreational drugs, avoiding anabolic steroids, moderating alcohol, managing chronic disease, reviewing medicines, reducing avoidable testicular heat and using regular activity, sleep and an adequate diet. Older age and being overweight can influence assessment.
In my clinic, a de-identified composite is a man in his 30s who started several supplements after one abnormal test. GP and fertility-specialist review identified a medicine and heat exposure that warranted attention; products were simplified and repeat testing was planned. This is based on typical presentations. Details have been changed and individual outcomes vary.
Allow for the sperm-production cycle when a clinician plans repeat assessment, but do not wait through repeated supplement trials when a correctable medical cause may be present.
Male infertility questions
What supplements are best for male fertility?
No supplement is proven to improve sperm or improve male fertility for every man. Certain supplements may affect some test measures, but live-birth evidence is very uncertain and Australian guidance does not support routine ingredient-specific recommendations. A targeted fertility supplement is most defensible for a verified deficiency or a specialist-defined indication.
How do I boost my fertility as a man?
To support male fertility, start with assessment, not a booster. Stop smoking and anabolic steroids, moderate alcohol, manage weight and chronic disease, review medicines, reduce avoidable heat and seek care for testicular or sexual health concerns. These changes support male reproductive health but cannot guarantee conception.
Do men’s fertility pills work?
They do not work reliably for every cause of infertility. Some studies report changes in the quality of your sperm or laboratory parameters, while evidence for pregnancy and live birth remains low or very low certainty. Product formulations differ, so one trial cannot validate every pill.
What is the best fertility drug for men?
There is no universal fertility drug. Treatment depends on the diagnosis and may involve surgery, assisted reproduction or specialist-prescribed hormone therapy for selected conditions. Testosterone is not a fertility drug and can impair spermatogenesis. See a male fertility specialist rather than buying hormones online.
References
- Healthy Male. Clinical guidelines for the management of male infertility. Checked 19 July 2026.
- de Ligny W, et al. Antioxidants for male subfertility. Cochrane Database of Systematic Reviews. 2022;5:CD007411. doi:10.1002/14651858.CD007411.pub5. PubMed
- Matorras R, et al. Antioxidant pretreatment for the male partner before assisted reproduction for male factor subfertility: a randomised controlled trial. Human Reproduction. 2020. PubMed
- Therapeutic Goods Administration. Withania somnifera (ashwagandha) and very rare risk of liver injury. 7 July 2026.
Evidence checked: 19 July 2026. General information only; it does not replace care from a GP, fertility specialist, urologist, endocrinologist, pharmacist or Accredited Practising Dietitian.
