Proof.Fit

Fertility

22 supplements analyzed and ranked by clinical evidence.

Supplements22

Supplement Evidence

Main Effects
L-Carnitine

Sperm quality, pregnancy

Erectile function, PDE5

Strong
46519
Carnitine

Sperm motility, +pregnancy

DNA damage, +pregnancy

Strong
47518
Folic Acid

Sperm quality +47%

Pregnancy +18.9%

Folate intake +60%

Strong
274515
Iodine

Fertility mostly unchanged

Infection risk ↓

Iodine status ↑

Strong
160217
Inositol

Ovulation+pregnancy, hormones

Fertility/embryo quality, +18% CPR

Strong
27017
Zinc

Sperm count/motility +47.8%

+74% normal sperm count

Pregnancy rates +18.9%

Strong
180417
Soy Isoflavones

Androgens/PSA ↓

Estrogen shift 2:16↑

Breast density ↓

Strong
35516
Selenium

Sperm quality +47%

Pregnancy/embryo outcomes +19%

Strong
69617
Arginine

Semen +47pp; pregnancy +19pp

Oocytes +3.2; fertilization higher

Birthweight +16%; litter +12-19%

Moderate
125319
Aspartate

Ovarian/testosterone ↑

Semen quality ↑

Moderate
201718
Astaxanthin

Oxidative stress↓, oocytes↑

Inflammation↓, embryos↑

Moderate
5617
Manganese

+1.1% laying rate

better litter/hatchability

sperm integrity: dose-sensitive

Moderate
8714
Saw Palmetto

Symptoms -52%

Fertility +motility

Moderate
7810
Lycopene

Sperm count/concentration ↑

Pregnancy outcomes improved

Moderate
19618
Ashwagandha

Sperm quality +12–26%

Hormones shift fertility

Moderate
5018
Tribulus Terrestris

Sperm +3.82 Mil/ml; motility

Cycle βˆ’42.9 days; conception x3.9

BV symptoms unchanged

Moderate
239
Ubiquinol

Motility +10.4pp

Count +11.9M/ml

Weak
3115
Date Palm Pollen

Sperm quality ↑

Concentration,motility,morphology

Weak
43
Maca

Sperm concentration +2x

Motility preserved in storage

Weak
194
Vitamin A

Oxidative stress ↓

Retinoic signaling ↑4x

Weak
130714
D-Aspartic Acid

Motility +43%

Testosterone +16%

Weak
162
Dodder Seed

LH/testosterone ↓

HMG βˆ’60%

Weak
32