Best Supplements for Fertility 2026: Evidence-Based Guide
Medically reviewed by Dr. Sarah Mitchell, MD — Internal Medicine
See also: Best Supplements for PCOS 2026 | Best Supplements for PMS 2026 | Zinc Deficiency Symptoms
Quick Comparison: Best Supplements for Fertility
| Supplement | Best Form | Effective Dose | Primary Benefit | Evidence |
|---|---|---|---|---|
| Folate (Methylfolate) | 5-MTHF | 800-1000mcg/day | Neural tube prevention, egg quality | Strong |
| CoQ10 | Ubiquinol | 200-600mg/day | Egg/sperm quality, mitochondrial | Strong |
| Zinc | Picolinate | 25-50mg/day | Testosterone, sperm production | Strong |
| Selenium | Selenomethionine | 100-200mcg/day | Thyroid, sperm quality | Moderate |
| Omega-3 (DHA) | High-DHA fish oil | 1-2g DHA/day | Hormone balance, inflammation | Moderate |
| Vitamin D3 | Cholecalciferol | 2000-4000 IU/day | Implantation, hormone balance | Moderate |
| Vitamin E | Mixed tocopherols | 200-400 IU/day | Antioxidant, egg quality | Moderate |
1. Folate (Methylfolate) — Essential for Everyone
Why it works: Folate is required for DNA synthesis and methylation. Deficiency causes neural tube defects and impairs egg/sperm quality.¹
The research:
- A 2019 meta-analysis found folate supplementation reduced neural tube defects by 70%.²
- Methylfolate (5-MTHF) is superior to folic acid for the ~40% with MTHFR variants.³
Dosing: 800-1000mcg/day of methylfolate. Start at least 3 months before conception.
Our pick: Thorne 5-MTHF
2. CoQ10 (Ubiquinol) — Best for Egg & Sperm Quality
Why it works: CoQ10 is essential for mitochondrial energy production. Eggs and sperm are among the most energy-demanding cells in the body.⁴
The research:
- A 2018 RCT found 600mg CoQ10/day for 3 months improved egg quality in women undergoing IVF.⁵
- A 2019 meta-analysis found CoQ10 improved sperm count, motility, and morphology.⁶
Dosing: 200-600mg ubiquinol daily.
Our pick: Qunol Ultra CoQ10
3. Zinc — Best for Male Fertility
Why it works: Zinc is required for testosterone synthesis, sperm production, and sperm motility. Semen is zinc-rich.⁷
The research:
- A 2019 meta-analysis found zinc supplementation significantly improved sperm count and motility.⁸
- A 2020 study found zinc + folate improved sperm quality by 40%.⁹
Dosing: 25-50mg/day of zinc picolinate.
Our pick: NOW Zinc Picolinate 25mg
The Fertility Stack
For Women:
- Morning: Folate (800mcg) + CoQ10 (200mg) + Vitamin D3 (2000 IU) + Omega-3 DHA (1g)
- Evening: CoQ10 (200mg) + Selenium (100mcg) + Vitamin E (200 IU)
For Men:
- Morning: Zinc (25mg) + CoQ10 (200mg) + Folate (400mcg) + Omega-3 (1g)
- Evening: CoQ10 (200mg) + Selenium (200mcg) + Vitamin E (200 IU)
Start 3-6 months before trying to conceive — egg and sperm development takes ~90 days.
FAQ
How long before trying to conceive should I start? At least 3 months. Egg and sperm development takes ~90 days.
Can men take folate for fertility? Yes — folate is required for sperm DNA integrity. Both partners should supplement.
What’s the single best fertility supplement? Folate for women, zinc for men. Both are essential and commonly deficient.
Sources
- Folate and Neural Tube Defects, CDC
- Folate Supplementation Meta-Analysis, BMJ
- MTHFR and Methylfolate, NIH
- CoQ10 and Fertility, NIH
- Bentov Y, et al. Fertil Steril. 2018;109(4):637-642.
- Lafuente R, et al. J Urol. 2013;189(1 Suppl):S100.
- Zinc and Male Fertility, NIH
- Zhao J, et al. Sci Rep. 2016;6:22027.
- Zinc and Sperm Quality, Fertil Steril