By Jane Gregorie, M.S., L.Ac., FABORM
Owner & Clinic Director
Introduction
Walk into any fertility Instagram feed and you will be told — often by someone with excellent lighting and no clinical training — that you need CoQ10, myo-inositol, DHEA, melatonin, NAC, PQQ, resveratrol, spermidine, royal jelly, maca, and a fistful of adaptogens. Immediately. In specific stacks. Usually available for purchase via the link in bio.
The reality is more nuanced. Some fertility supplements have strong, replicable evidence for specific indications. Others have modest evidence when used precisely. A few are actively hyped past what the data supports. And a small number are risky enough to require clinician supervision.
This guide is the honest version of that conversation. If you are:
- overwhelmed by the sheer number of supplements marketed for fertility
- weighing whether to add CoQ10, inositol, DHEA, or melatonin to your protocol
- trying to conceive naturally, prepping for IUI or IVF, or supporting a male partner’s fertility
- suspicious of influencer-marketed “fertility stacks” and looking for what the research actually says
…this is the post that sorts it out — organized by evidence tier, with specific indications, dosing ranges, and honest cautions. For our overall framework, see The Four Pillars of Integrative Fertility Care.
One important upfront: no supplement replaces a proper diagnostic workup, coordination with your reproductive endocrinologist, or evidence-based fertility treatment. Supplements are adjuncts, not solutions. Always coordinate with your medical team, especially if you are pregnant or on fertility medications.
First, a Humbling Truth: What the Big Cochrane Reviews Say
Before we sort individual supplements into tiers, it is worth naming what the two largest independent reviews of the whole fertility-supplement literature found — because this is exactly what does not make it onto Instagram.
- Showell et al., 2020 — Antioxidants for Female Subfertility. Cochrane Database of Systematic Reviews. 63 trials, 7,760 women, compared oral antioxidants including CoQ10, melatonin, NAC, myo-inositol, L-carnitine, selenium, vitamin E, vitamin C, vitamin D, and omega-3s against placebo, standard care, or another antioxidant. The conclusion: due to very low-quality evidence, the authors were uncertain whether antioxidants improve live birth rate compared with placebo or no treatment (Showell et al., 2020, Cochrane).
- de Ligny et al., 2022 — Antioxidants for Male Subfertility. Cochrane Database of Systematic Reviews. 90 studies, 10,303 subfertile men, 20 different oral antioxidants. Evidence: low to very low certainty on live birth and clinical pregnancy outcomes (de Ligny et al., 2022, Cochrane).
That is not a reason to skip supplements entirely — the Cochrane reviews are limited by heterogeneous trial designs, tiny sample sizes in many individual studies, and inconsistent outcome measures. But it is a reason to be skeptical of anyone selling you a 12-bottle “fertility stack” as a guaranteed solution.
The strongest evidence tends to sit in specific indications (CoQ10 for diminished ovarian reserve; inositol for PCOS; folate for the general population; iron for iron-deficient women). Broad-spectrum antioxidant supplementation for “general fertility” is where the evidence gets thin.
With that context, here is the tier system.
Tier 1 — Strong Evidence: Take These
These supplements have consistent evidence, well-established mechanisms, and defensible dosing ranges. Everyone trying to conceive should consider them (with the specific indications noted).
Prenatal Vitamin with Methylated Folate
Evidence: Rock-solid, decades of RCTs. Folate supplementation before conception reduces neural tube defects by ~70%. The methylated form (methylfolate / 5-MTHF) is preferred over synthetic folic acid, particularly for people with MTHFR gene variants (present in up to ~40% of the population).
Dose: 800–1,000 mcg methylfolate daily. Start at least 3 months before conception. Continue through pregnancy.
Also important in a prenatal: vitamin B12 (methylcobalamin), iron, iodine, choline, vitamin D, and — increasingly — omega-3 DHA.
Vitamin D3
Evidence: Vitamin D deficiency (25(OH)D below 30 ng/mL) is associated with lower IVF success rates, higher miscarriage risk, and worse pregnancy outcomes in multiple observational studies. Correcting deficiency to the normal range is clearly beneficial; supplementing beyond that in already-sufficient people is not.
Dose: 2,000–4,000 IU daily, adjusted to labs. Aim for a serum 25(OH)D level of 40–60 ng/mL for fertility optimization. Test annually, or before starting an IVF cycle.
Omega-3 (EPA + DHA)
Evidence: Observational data links higher omega-3 intake to better IVF outcomes and improved sperm parameters (Salas-Huetos et al., 2017, Human Reproduction Update). DHA in particular supports fetal brain development in pregnancy. Also a foundational anti-inflammatory intervention.
Dose: 1,000–2,000 mg combined EPA + DHA daily. Choose a fish-oil brand with third-party testing for heavy metals and oxidation, or an algae-based DHA for plant-based diets.
CoQ10 / Ubiquinol (over 35 or DOR)
Evidence: CoQ10 supports mitochondrial ATP production in the oocyte, which declines with age. A 2024 systematic review and meta-analysis in Annals of Medicine pooling six RCTs and over 1,500 women found that CoQ10 pretreatment significantly improved clinical pregnancy rate, oocyte yield, embryo quality, and cycle cancellation rate, while reducing miscarriage and total gonadotropin dose in women with diminished ovarian reserve undergoing IVF (Clinical evidence of coenzyme Q10 pretreatment for women with DOR undergoing IVF/ICSI, 2024, Annals of Medicine). Mechanistic foundation: Bentov & Casper, 2015, Aging Cell — CoQ10 restores oocyte mitochondrial function.
Dose: 100–300 mg/day of ubiquinol for most patients; up to 600 mg/day for advanced maternal age or documented DOR. Start at least 3 months before conception attempts or IVF since egg development takes ~90 days. Also relevant for male factor infertility sperm quality.
Iron (if deficient)
Evidence: Iron deficiency and iron-deficiency anemia are associated with ovulatory infertility and worse pregnancy outcomes. The Chavarro & Willett Nurses’ Health Study II specifically identified iron intake as one of the “fertility diet” factors.
Dose: Only supplement if labs show low ferritin (<50 ng/mL for fertility optimization). Iron bisglycinate or ferrous sulfate, 20–40 mg elemental iron daily on an empty stomach with vitamin C. Retest at 3 months.
Choline
Evidence: Critical for fetal neural development and placental function. Most women do not meet the recommended intake through diet alone. Egg yolks are a top food source.
Dose: 450 mg/day trying to conceive; 550 mg/day during pregnancy. Standalone supplement or through eggs (~150 mg per yolk). Learn more in our post on the benefits of choline during pregnancy.
Tier 2 — Moderate Evidence: Consider for Specific Indications
These have real evidence, but only for specific patient profiles. Not everyone should be taking them.
Myo-Inositol — for PCOS
Evidence: Inositol addresses insulin signaling — a core issue in PCOS. A 2024 systematic review and meta-analysis of 17 intervention studies found myo-inositol + D-chiro-inositol supplementation significantly increased clinical pregnancy rate and top-grade embryos in PCOS patients undergoing ART (Effect of myo-inositol on ART outcomes in PCOS, 2024, PMC12413536).
The Fitzgerald et al. 2024 systematic review and meta-analysis in JCEM — the analysis that informed the 2023 International Evidence-Based PCOS Guidelines (Teede et al., 2023) — concluded that evidence supporting inositol is “limited and inconclusive” for broader PCOS management, though reasonable to consider given the strong safety profile (Fitzgerald et al., 2024, JCEM).
Dose: 40:1 myo-inositol to D-chiro-inositol ratio (typically 2,000 mg myo-inositol + 50 mg D-chiro-inositol twice daily = 4,000 mg + 100 mg total daily). This ratio mimics the natural plasma ratio and is what most PCOS trials have used. See our full PCOS post for context.
N-Acetylcysteine (NAC) — for PCOS, endometriosis, or sperm DNA fragmentation
Evidence: NAC is a glutathione precursor with antioxidant and anti-inflammatory effects. RCTs in PCOS show improvements in ovulation and pregnancy rates comparable to metformin in some studies. Small trials in endometriosis suggest endometrioma stabilization. In male fertility, NAC has evidence for reducing sperm DNA fragmentation.
Dose: 600–1,800 mg/day in divided doses, between meals. We use a specific 3 days on/4 days off protocol for endometriosis. Well-tolerated; stop if nausea occurs.
DHEA — for diminished ovarian reserve (with RE supervision only)
Evidence: A 2023 meta-analysis on DHEA priming in women with poor ovarian response undergoing IVF/ICSI found DHEA use associated with a significant increase in pregnancy likelihood (OR 1.8; 95% CI 1.29–2.51) (PMC10288189). A 2024 network meta-analysis of 38 DOR treatment studies confirmed DHEA improves the number of eggs retrieved. Evidence is mixed — some earlier meta-analyses showed no significant pregnancy-rate difference.
Dose: 25 mg three times daily (75 mg total) for 8–12 weeks pre-IVF is the most common protocol. Do not take DHEA without your reproductive endocrinologist’s guidance — it is a hormone precursor and can affect testosterone, estrogen, cortisol, and lipid balance. Monitor labs.
Melatonin — for oxidative stress in IVF cycles
Evidence: Melatonin is a potent antioxidant in follicular fluid, and small RCTs suggest 3 mg nightly for 2–4 weeks pre-IVF improves oocyte and embryo quality in poor responders. Included in the Showell 2020 Cochrane review — evidence is low certainty overall.
Dose: 3 mg at bedtime for 4–12 weeks pre-IVF. Not intended for long-term use during natural TTC cycles unless a specific sleep or oxidative-stress indication exists.
L-Carnitine — for male factor infertility
Evidence: L-carnitine (and acetyl-L-carnitine) has moderate evidence for improving sperm motility and concentration. Included in male-antioxidant stacks with vitamin C, vitamin E, zinc, and selenium.
Dose: 1–3 g/day for men; sometimes included in female protocols but evidence is weaker there.
Selenium and Zinc — for male factor infertility
Evidence: Both are essential trace minerals for spermatogenesis. Selenium supports antioxidant enzymes (glutathione peroxidase); zinc is critical for testosterone metabolism and sperm production. Deficiency is measurable and correctable.
Dose: Selenium 200 mcg/day (do not exceed 400 mcg — toxicity risk); zinc 15–30 mg/day (balance with a small amount of copper if supplementing long-term). See our male factor post.
Tier 3 — Emerging Evidence: Interesting, Limited
These supplements have plausible mechanisms and some preliminary studies, but the evidence base is not yet strong enough to broadly recommend. Reasonable to consider with clinician guidance for specific presentations.
Ashwagandha
Emerging evidence for male fertility (sperm concentration, motility, testosterone). Female fertility evidence is limited. Adaptogen with a reasonable safety profile; some concern about interactions with thyroid medication.
PQQ (Pyrroloquinoline Quinone)
Mechanistic case for supporting mitochondrial biogenesis. Sometimes stacked with CoQ10 for egg quality. Human fertility RCTs are limited.
Resveratrol
Antioxidant with animal-model data on egg quality. Human data is mixed, and some studies have raised concerns about resveratrol during ART cycles. Not something we typically recommend during active TTC or IVF cycles.
Alpha-Lipoic Acid
Antioxidant with insulin-sensitizing effects. Small studies in PCOS. Reasonable to consider but not a first-line pick.
Vitex / Chasteberry
Traditionally used for luteal phase support and cycle regulation. Small RCTs suggest modest benefit for luteal phase defect and premenstrual symptoms. Not appropriate during IVF cycles (hormonal effect can interfere).
Maca
Popular but the evidence is thin. Small studies suggest modest benefit on libido and possibly sperm parameters. Not a foundational supplement.
Tier 4 — Unsupported or Overhyped: Save Your Money
Several supplements dominate the fertility-influencer conversation despite thin or negative evidence:
- Royal jelly — traditional use; no rigorous RCT evidence for human fertility
- Bee pollen — same
- “Fertility teas” and multi-herb blends without transparent ingredient lists — often contain herbs contraindicated in specific cycle phases or in early pregnancy. However, TCM formulas (customized for you, not a generic “fertility herb” or teabag) are evidence-based and safe when given by an experienced, licensed TCM provider.
- Sold-as-“fertility” mushroom stacks — reishi, cordyceps, etc. — interesting emerging research on general health, but no meaningful fertility-specific evidence
- High-dose vitamin E or vitamin C alone — limited fertility benefit outside of specific indications, and high doses can paradoxically be pro-oxidant
- CBD for fertility — actually associated with worse sperm parameters in some studies; not recommended
- “Fertility superfood” powders at $60–$150/month — usually a random blend of things you could get from food or a properly targeted supplement stack for a fraction of the cost
Tier 5 — Risky or Requires Supervision
- DHEA without RE supervision — hormone precursor; requires labs and monitoring
- High-dose fat-soluble vitamins (A, D, E, K) beyond therapeutic need — accumulate in tissues, can be teratogenic (vitamin A specifically) in pregnancy
- Unregulated herbal blends from non-GMP suppliers — the supplement industry has real quality control problems; heavy metal contamination and mislabeling are documented. All of our herbs are GMP-certified and customized.
- Any supplement not disclosed to your fertility team — interactions with fertility medications (stimulation protocols, progesterone support, blood thinners) can be clinically significant
- Testosterone replacement therapy in men trying to conceive — paradoxically suppresses sperm production; a common overlooked contributor to male factor infertility
What We Recommend at Acupuncture Denver: The Foundational Stack
For most fertility patients, a foundational supplement stack looks like this:
- Prenatal with methylated folate — daily, 3+ months pre-conception
- Vitamin D3 — 2,000–4,000 IU (adjust to labs; aim for 40–60 ng/mL)
- Omega-3 EPA/DHA — 1,000–2,000 mg
- Ubiquinol (CoQ10) — 100–300 mg (higher for advanced maternal age or DOR)
- Choline — 450 mg (550 mg once pregnant)
- Magnesium glycinate — 200–400 mg at night (see our magnesium for fertility and pregnancy post)
- Probiotic — daily
Then, based on individual labs, diagnosis, and TCM pattern, we may add:
- Myo-inositol for PCOS
- NAC for PCOS, endometriosis, or sperm DNA fragmentation
- DHEA for diminished ovarian reserve (with RE approval)- only as directed and with labs
- Melatonin for oxidative-stress-driven IVF prep in poor responders
- Selenium, zinc, L-carnitine, vitamin C, vitamin E for male factor infertility
- Iron if ferritin is low
- Bioidentical B12 (methylcobalamin) if levels are borderline low
All supplements at our clinic are ordered through our Fullscript pharmacy, which carries practitioner-verified brands with third-party testing.
The Male Fertility Supplement Stack
For male factor infertility, a targeted antioxidant protocol has moderate evidence — even acknowledging the 2022 Cochrane review’s cautious framing. The de Ligny 2022 Cochrane review of 90 studies and 10,303 men found low-certainty evidence, but individual antioxidants have replicable effects in smaller trials. A typical stack includes:
- CoQ10 / ubiquinol — 200 mg
- Vitamin C — 500–1,000 mg
- Vitamin E — 400 IU
- Zinc — 15–30 mg
- Selenium — 200 mcg
- L-carnitine — 1–3 g
- Omega-3 EPA/DHA — 1,000–2,000 mg
- NAC — 600–1,200 mg (particularly for elevated DNA fragmentation)
Because spermatogenesis takes ~74 days, plan on at least 3 months of consistent use before repeating a semen analysis or DFI to assess change. We carry Fertilaid for Men, a blend of the above that helps with compliance (vs. taking all of the individually).
What to Ask Yourself Before Taking Any Fertility Supplement
- Is there a specific indication for me? (Broad “everyone should take it” is usually a red flag.)
- Has my prenatal + vitamin D + omega-3 baseline been established? (Get the foundational stack right first.)
- Have my labs confirmed a deficiency or specific pattern? (Iron, vitamin D, thyroid, B12, hormones.)
- Is my reproductive endocrinologist aware? (Especially before IVF cycles.)
- Is the brand third-party tested? (Fullscript, ConsumerLab-verified, USP-verified, or NSF-certified.)
- Am I taking the researched dose, not just the label dose? (Many trial doses are higher or lower than typical products.)
- Will I actually take it consistently for 3+ months? (Sporadic use produces sporadic results.)
Ready for a Personalized Supplement Plan?
At Acupuncture Denver, a fertility supplement plan is not a stack we sell you at the door — it is designed around your:
- complete workup, baseline labs, and any medications
- TCM pattern and diagnostic picture
- specific diagnosis (PCOS, endometriosis, DOR, unexplained, RPL, male factor)
- age, timeline, and IVF plan
- what you are already taking (so we do not stack redundantly)
👉 Schedule your fertility consultation to build a personalized, evidence-based supplement plan.
For the broader framework this fits into, see The Four Pillars of Integrative Fertility Care.
Frequently Asked Questions
What are the best fertility supplements?
The strongest evidence supports a prenatal with methylated folate, vitamin D3 (2,000–4,000 IU), omega-3 EPA/DHA (1,000–2,000 mg), ubiquinol/CoQ10 (100–300 mg), choline (450–550 mg), and magnesium glycinate. Beyond that foundational stack, targeted additions like myo-inositol (for PCOS), NAC (for PCOS/endometriosis/sperm), or DHEA (for diminished ovarian reserve, with RE supervision) have moderate evidence for specific indications.
Does CoQ10 really improve egg quality?
Yes — this is one of the stronger single-supplement claims in fertility. A 2024 meta-analysis in Annals of Medicine of six RCTs and over 1,500 women found CoQ10 pretreatment significantly improved clinical pregnancy rate, oocyte yield, embryo quality, and cycle cancellation rate in women with diminished ovarian reserve undergoing IVF. Ubiquinol (the reduced form) is often preferred for absorption. Take 100–300 mg daily starting at least 3 months before IVF or conception attempts.
Should I take myo-inositol for PCOS?
For PCOS, yes — myo-inositol + D-chiro-inositol in a 40:1 ratio has moderate evidence for improving insulin sensitivity, ovulation, and clinical pregnancy rates in ART cycles. The 2024 Fitzgerald systematic review that informed the 2023 International PCOS Guidelines noted evidence is “limited and inconclusive” for broader PCOS management, but inositol is reasonable to consider given the strong safety profile.
Should I take DHEA to boost my egg reserve?
Only under reproductive endocrinologist supervision. A 2023 meta-analysis found DHEA priming for poor ovarian response was associated with a significant pregnancy increase (OR 1.8), and a 2024 meta-analysis of 38 studies confirmed DHEA improves the number of eggs retrieved. However, DHEA is a hormone precursor with real effects on testosterone, estrogen, cortisol, and lipids — labs and medical monitoring are important. Do not self-prescribe.
Are fertility supplements safe?
Foundational vitamins and minerals (prenatal, vitamin D, omega-3, CoQ10) have strong safety profiles at recommended doses. Hormone precursors like DHEA require monitoring. High-dose fat-soluble vitamins can accumulate. Unregulated herbal blends from non-GMP suppliers have documented contamination issues. Always disclose all supplements to your fertility team — interactions with stimulation medications and progesterone support can matter.
What supplements are overhyped?
Royal jelly, bee pollen, generic “fertility teas” and “fertility superfood powders,” and CBD (which is actually associated with worse sperm parameters in some studies) all have marketing far ahead of the evidence. Multi-herb blends without transparent ingredient lists are particularly risky in specific cycle phases or early pregnancy.
Should men take fertility supplements too?
Yes — for male factor infertility, a targeted antioxidant stack (CoQ10, vitamin C, vitamin E, zinc, selenium, L-carnitine, omega-3, and sometimes NAC) has moderate evidence for improving sperm concentration, motility, morphology, and DNA fragmentation. The 2022 Cochrane review of 10,303 men found low-certainty evidence in aggregate but individual antioxidants have reasonable data. Plan for at least 3 months of use — spermatogenesis takes ~74 days.
What does the Cochrane data really say about fertility supplements?
The two largest independent reviews — Showell 2020 (7,760 women) and de Ligny 2022 (10,303 men) — found that antioxidant supplementation has low- to very-low-certainty evidence for improving live birth rates in aggregate. This is not a reason to skip supplements entirely, but it is a reason to be targeted rather than broad-spectrum, to focus on specific indications, and to be skeptical of anyone marketing an “everyone-needs-this” 12-bottle stack.
Can I just get everything from food?
Some things, yes — most of the fertility diet supports the same biology as the supplements. But three things are hard to hit from food alone at the fertility-optimization level: methylated folate at 800+ mcg, omega-3 EPA/DHA at 1–2 g daily, and CoQ10 at 100+ mg for women over 35. Foundational supplementation makes up the gap.
How long before conception should I start supplements?
At least 3 months for anything that affects egg or sperm quality (CoQ10, prenatal folate, antioxidant stacks) — egg development takes ~90 days and sperm production takes ~74 days. 6 months is better for advanced maternal age, diminished ovarian reserve, or planned IVF. Vitamin D and iron correction should happen as early as possible since normalizing labs takes months.
References
- Showell, M. G., et al. (2020). Antioxidants for female subfertility. Cochrane Database of Systematic Reviews. 63 trials, 7,760 women.
- de Ligny, W., et al. (2022). Antioxidants for male subfertility. Cochrane Database of Systematic Reviews. 90 studies, 10,303 men.
- (2024). Clinical evidence of coenzyme Q10 pretreatment for women with diminished ovarian reserve undergoing IVF/ICSI: a systematic review and meta-analysis. Annals of Medicine.
- Bentov, Y., & Casper, R. F. (2015). Coenzyme Q10 restores oocyte mitochondrial function and fertility during reproductive aging. Aging Cell.
- Fitzgerald, S., et al. (2024). Inositol for Polycystic Ovary Syndrome: A Systematic Review and Meta-analysis to Inform the 2023 Update of the International Evidence-based PCOS Guidelines. The Journal of Clinical Endocrinology & Metabolism.
- (2024). The effect of myo-inositol on assisted reproductive technology outcomes in women with polycystic ovarian syndrome: A systematic review and meta-analysis of randomized clinical trial studies. PMC12413536.
- (2023). Efficacy of dehydroepiandrosterone priming in women with poor ovarian response undergoing IVF/ICSI: a meta-analysis. PMC10288189.
- (2024). Therapeutic management in women with a diminished ovarian reserve: a systematic review and meta-analysis of randomized controlled trials. Fertility and Sterility.
- (2025). Exploring the protective effects of coenzyme Q10 on female fertility. Frontiers in Cell and Developmental Biology.
- Chavarro, J. E., & Willett, W. C. (2007). Diet and lifestyle in the prevention of ovulatory disorder infertility. Obstetrics & Gynecology, 110(5), 1050–1058.
- Salas-Huetos, A., et al. (2017). Dietary patterns, foods and nutrients in male fertility parameters and fecundability: a systematic review of observational studies. Human Reproduction Update, 23(4), 371–389.
- Teede, H. J., et al. (2023). International Evidence-Based Guideline for the Assessment and Management of Polycystic Ovary Syndrome. Fertility and Sterility.
Medical disclaimer: This article is for educational purposes only and is not a substitute for personalized medical care. Supplement recommendations should be individualized based on your labs, diagnosis, medications, and reproductive-endocrinologist plan. Always disclose all supplements to your fertility team. Some supplements (particularly DHEA and hormone precursors) require clinical supervision.
