Top 5 — Ranked by Evidence
Very Strong
Folate
Aids in Fertility
400 mcg/day DFE (RDA); pregnancy: 600 mcg/day; methylfolate (5-MTHF): 400–800 mcg/day
Strong
Tongkat Ali
Male fertility support
Standard dose: 100-400 mg/day standardized root extract. Most clinical trials use 200
Strong
Acetyl-L-Carnitine (ALCAR)
Male fertility improvement
COGNITIVE/AGING: 1500-3000 mg/day divided. DIABETIC NEUROPATHY: 1000 mg × 3/day = 300
Strong
Kaneka Ubiquinol™ (Reduced Coenzyme Q10)
Fertility support
Typically 100 to 200 mg per day.
Strong
KSM-66®
Testosterone and Male Fertility
300–600 mg/day KSM-66® root extract (5% withanolides); 300 mg twice daily or 600 mg o
📈 Fastest Growing Fertility Ingredients
Branded ingredients seeing rapid growth in formulator adoption and clinical research in 2024–2026.
Trending
Strong
KSM-66®
Testosterone and Male Fertility
600 mg/day, commonly split as 300 mg twice daily, of standardized root extract
Trending
Strong
Tongkat Ali
Male fertility support
Standard dose: 100-400 mg/day standardized root extract. Most clinical trials use 200-400…
Trending
Strong
Inositol (Myo-Inositol)
Egg quality and IVF outcomes
2-4 g/day myo-inositol for metabolic and general use. PCOS: 4 g myo-inositol + 100 mg…
🔬 Future Fertility Ingredients to Watch
Lower current evidence but active research underway — these may become top picks within 2–3 years.
Watch
Moderate
Shilajit
Testosterone increase in middle-aged men
Standard clinical dose: 250 mg twice daily (500 mg/day total) of purified shilajit…
Watch
Moderate
Shatavari (Asparagus racemosus / Xeya®)
Lactation support — strongest evidence
500-1,000 mg/day standardized root extract. Lactation: 300 mg twice daily. PCOS (CL22209): 100…
Watch
Strong
L-Carnitine
Male fertility — sperm count and motility
General supplementation: 1-3 g/day L-carnitine. Athletic recovery: 2 g/day L-carnitine…
Recommended Fertility Products
Heads up: NutraSmarts may earn a commission from purchases made through these links, at no extra cost to you. We curate these picks based on the same evidence we cite throughout the page. Full disclosure.
Real products featuring the best-evidenced fertility ingredients ranked above - chosen for clinically-studied forms and doses, third-party testing, and value. Match the supplement to your specific need.
Best for preconception foundational nutrients
Amazon →
Garden of Life mykind Organics Prenatal Multi
Whole-food multi w/ methylfolate + D3, 90 tablets
Organic whole-food prenatal supplying folate (not folic acid), iron and D3; certified organic, non-GMO, vegan.
Best for the absorbable ubiquinol form
Amazon →
Life Extension Super Ubiquinol CoQ10
100 mg ubiquinol softgels, 60 ct
Provides the reduced ubiquinol form of CoQ10 that is often easier to absorb, from a tested, well-formulated brand.
Best for reproductive-health zinc support
Amazon →
Thorne Zinc Picolinate 30 mg
30 mg zinc picolinate capsules, 60 ct
Well-absorbed picolinate form supporting normal reproductive health; third-party certified, free of gluten/dairy/soy.
Best for antioxidant & glutathione support
Amazon →
NOW Supplements NAC 600 mg
600 mg w/ selenium & molybdenum veg caps, 100 ct
NAC is a precursor the body uses to make glutathione; adds selenium and molybdenum from a value-priced brand.
All Fertility Ingredients (17)
Very Strong
Folate
Aids in Fertility
400 mcg/day DFE (RDA); pregnancy: 600 mcg/day; methylfolate (5-MTHF): 400–800 mcg/day
Strong
Tongkat Ali
Male fertility support
Standard dose: 100-400 mg/day standardized root extract. Most clinical trials use 200
Strong
Acetyl-L-Carnitine (ALCAR)
Male fertility improvement
COGNITIVE/AGING: 1500-3000 mg/day divided. DIABETIC NEUROPATHY: 1000 mg × 3/day = 300
Strong
Kaneka Ubiquinol™ (Reduced Coenzyme Q10)
Fertility support
Typically 100 to 200 mg per day.
Strong
KSM-66®
Testosterone and Male Fertility
300–600 mg/day KSM-66® root extract (5% withanolides); 300 mg twice daily or 600 mg o
Strong
Ashwagandha
Male Fertility and Testosterone
KSM-66® root extract: 300-600 mg/day (most stress/sleep trials). Shoden®: 120-240 mg/
Strong
Inositol (Myo-Inositol)
Egg quality and IVF outcomes
2–4 g/day myo-inositol; PCOS: 4 g/day myo + 100 mg D-chiro-inositol
Strong
L-Carnitine
Male fertility — sperm count and motility
General supplementation: 1-3 g/day L-carnitine. Athletic recovery: 2 g/day L-carnitin
Strong
NAC (N-Acetylcysteine)
Fertility Benefits
600–1,800 mg/day in divided doses; respiratory: 600 mg twice daily; liver support: 60
Moderate
PrimaVie® (Shilajit Extract — Natreon)
Sperm count and male fertility
Clinical trial dose: 250 mg twice daily (500 mg/day total) for 90 days. CoQ10 potenti
Limited
Safed Musli (Chlorophytum borivilianum)
Modest semen parameter improvements (small Ayurvedic clinical trials)
TRADITIONAL AYURVEDIC: 5-10 g root powder/day with milk. CAPSULE EXTRACTS: 250-500 mg
Limited
Maca
Enhanced Male Fertility
1.5–3 g/day dried root powder; gelatinized maca preferred for digestion; 8–12 weeks f
Limited
Royal Jelly
Traditional fertility and vitality use
MENOPAUSE (Sharif 2019 n=200): 1000 mg/day × 8 wk. ASAMA 2018 n=42: 800 mg/day enzyme
Very Strong
Zinc
Immune System Support
8–11 mg/day (RDA); therapeutic: 25–40 mg/day elemental zinc; upper limit 40 mg/day; a
Moderate
Astaxanthin
Eye health and visual function
4–12 mg/day from Haematococcus pluvialis extract; skin: 4–6 mg/day; exercise recovery
Moderate
Shatavari (Asparagus racemosus / Xeya®)
Lactation support — strongest evidence
500-1,000 mg/day standardized root extract. Lactation: 300 mg twice daily. PCOS (CL22
Moderate
Shilajit
Testosterone increase in middle-aged men
Standard clinical dose: 250 mg twice daily (500 mg/day total) of purified shilajit st