Female Fertility & TTC
For anyone trying to conceive, one supplement is non-negotiable (folate, for the baby), and a few others — inositol, CoQ10 — have a reasonable rationale for egg quality and ovulation. But the honest headline is that large umbrella reviews find the evidence that "fertility supplements" raise conception or live-birth rates is limited and low-quality (and drawn mostly from women in IVF/fertility treatment, not spontaneous conception). Here’s what’s genuinely worth taking, what’s hopeful-but-unproven, and how this differs from our PCOS guide.
Last reviewed Jun 24, 2026 · Evidence-based — every ingredient links to its underlying studies.
Start folate, and get a fertility work-up if it’s taking a while
Start a folate/prenatal before conception (neural-tube-defect prevention is proven). If you’ve been trying ~12 months (or 6 if over 35), see a doctor — many causes (ovulatory, tubal, thyroid, male-factor) need medical evaluation, not supplements. For PCOS-specific metabolic support, see our PCOS guide; this guide is about preconception/egg-quality.
- Take folate/methylfolate before conception (essential)
- Consider inositol if you have irregular/PCOS cycles
- Get a work-up after ~12 months trying (6 if 35+)
- Expect "fertility blends" to overcome a medical cause
- Take high-dose preformed vitamin A (retinol) or untested herbs while TTC
- Assume supplements replace a fertility evaluation
Key point: Folate is essential; inositol and CoQ10 are the best-supported extras — but proof they raise conception/live-birth rates is limited.
What the evidence supports
- 6Folate / methylfolate— Start before conception — prevents neural-tube defects (this is for the baby, proven)
- 7Inositol (myo + D-chiro 40:1)— Best for insulin-resistant/PCOS cycles — improves ovulation and egg quality markers
- 8CoQ10— Studied for egg quality, especially with age/diminished reserve; promising but not conclusive
- 7.5Vitamin D— Correct a deficiency (common); linked to fertility outcomes
- 9Omega-3— General reproductive/health support; modest fertility data
- 6N-acetylcysteine (NAC)— Some adjunct evidence for ovulation in PCOS
- 4.2D-chiro-inositol (alone/high-dose)— High-dose DCI alone can impair egg quality — use the 40:1 myo:DCI ratio, not DCI solo
Honest expectations
The one supplement with rock-solid TTC evidence is folate — and that’s to protect the baby, not to boost conception. For conception itself, inositol (in the 40:1 myo:D-chiro form) genuinely helps ovulation in insulin-resistant/PCOS cycles, and CoQ10 is a reasonable bet for egg quality with advancing age — but a Cochrane/umbrella read of "fertility supplements for sub-fertile women" concludes the evidence for higher live-birth or pregnancy rates is limited and low-quality. So take folate, consider inositol/CoQ10 if they fit your situation, avoid high-dose preformed vitamin A (retinol) and untested herbs, and don’t let supplements delay a proper work-up if conception is taking time.
Sources & further reading
Common questions
What supplements help with fertility / TTC?
Folate is essential before conception (for the baby). For conception itself, inositol helps insulin-resistant/PCOS cycles and CoQ10 is studied for egg quality — but the evidence that fertility supplements raise conception or live-birth rates is limited (and mostly from IVF/treatment settings).
Does CoQ10 improve egg quality?
It’s a reasonable, mechanistically sensible bet — especially with age or diminished ovarian reserve — and early trials are encouraging, but it’s not conclusively proven to increase pregnancies.
Is inositol good for getting pregnant?
For women with PCOS or insulin resistance, the myo + D-chiro (40:1) combination improves ovulation and is a solid option. Use the 40:1 ratio — high-dose D-chiro-inositol alone can impair egg quality.
When should we see a doctor?
After about 12 months of trying (6 if you’re over 35), or sooner with known issues. Many fertility causes need medical evaluation and treatment that supplements can’t address.
Educational guidance, not medical advice. Evidence and safety details for each option live on its individual page; see a clinician for prescription treatments or persistent problems.
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