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ingestible · for fertility & reproductive health

Zinc (Male Fertility)

Reviewed by the Nimbera editorial team · Last updated May 2026

Zhao 2016 Scientific Reports (PMID 26932683) - systematic review and meta-analysis of 20 studies (n=2600 infertile cases, 867 controls); infertile men had significantly lower seminal plasma zinc (SMD -0.64, 95% CI -1.01 to -0.28); zinc supplementation significantly increased sperm motility (SMD -1.82, 95% CI -2.63 to -1.01) and percentage of normal morphology in infertile males.$8-$20/month

How to use

Take 25-45 mg elemental zinc daily (as zinc gluconate, zinc picolinate, or zinc citrate) with food to reduce nausea. Pair with 1-2 mg copper if supplementing long-term (>8 weeks), as high zinc depletes copper. A typical trial period is 3 months, corresponding to one full spermatogenesis cycle.

How it works

Zinc is essential at multiple stages of male reproductive function: it stabilizes sperm DNA against oxidative fragmentation, supports testosterone biosynthesis in Leydig cells, and is required for enzymatic activity during spermatogenesis. The epididymis is one of the most zinc-rich tissues in the body. Men with oligospermia or asthenospermia frequently show depleted seminal zinc levels.

Where to buy

Available at any pharmacy or grocery store. Zinc picolinate and zinc citrate are better absorbed than zinc oxide. Common brands include NOW Foods Zinc Picolinate, Thorne Zinc Picolinate, and Nature Made Zinc. Also available at Amazon and iHerb.

Typical cost: $8-$20/month

Safety notes

Do not exceed 40 mg elemental zinc daily for extended periods without medical supervision - excess zinc impairs copper absorption and can reduce immune function. Zinc interacts with certain antibiotics (quinolones, tetracyclines) and should be taken 2 hours apart from those medications. This remedy addresses male fertility sperm parameters; it is not relevant for women's preconception supplementation.

Drug & supplement interactions

  • Always tell your doctor or pharmacist about any supplements you take.
  • Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
  • Herbal remedies can affect how the body absorbs or metabolises drugs.
  • Check drugs.com interactions checker before starting.

Clinical source

Zhao 2016 - Scientific Reports (PMID 26932683)

This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.