Omega-3 (DHA/EPA fish oil)
Long-chain fatty acids that are built into cell membranes and help balance inflammation. DHA is important for fetal brain and eye development and is proposed to support egg and sperm membrane quality.
Also known as fish oil, DHA, EPA, docosahexaenoic acid.
At a glance
Updated monthly · checked 10 h agoOmega-3 (DHA/EPA fish oil) is an omega-3 marketed as a fertility supplement. It is not a fertility drug. Its computed evidence score is ~86/100. A reasonable, low-risk part of a preconception diet with clear pregnancy benefits, but only modest and uncertain evidence as a fertility enhancer.
- Randomized trials
- 846
- Systematic reviews
- 604Computed
- Real product labels indexed
- 20 in the NIH DSLD
Marketed to improve egg quality, sperm quality, and support a healthy pregnancy.
A reasonable, low-risk part of a preconception diet with clear pregnancy benefits, but only modest and uncertain evidence as a fertility enhancer.
What the evidence says
Computed from the volume and type of primary studies, not the strength of the marketing. Each figure below links to its live search.
Some observational and small interventional data link higher omega-3 intake with modestly better fertility and IVF outcomes and improved sperm parameters, but trials are small and mixed. The strongest established role is in pregnancy (DHA for fetal development), not in boosting conception.
- 2025 Focused Update of the 2019 ESC/EAS Guidelines for the management of dyslipidaemias2025 · 595 citations
- Co-exposure to 55 endocrine-disrupting chemicals linking diminished sperm quality: Mixture effect, and the role of seminal plasma docosapentaenoic acid2024 · 30 citations
- Docosahexaenoic Acid (DHA) and Eicosapentaenoic Acid (EPA)—Should They Be Mandatory Supplements in Pregnancy?2024 · 22 citations
- An overview of national and international long chain omega-3 polyunsaturated fatty acid intake recommendations for healthy populations2025 · 20 citations
- The use of industrial hemp (Cannabis sativa) on farm animal’s productivity, health and reproductive performance: a review2024 · 20 citations
Source: europepmc+pubmed+openalex · as of Sep 25, 2026
Real product labels
Actual marketed supplement products indexed by the NIH Dietary Supplement Label Database. A product being on a shelf is not evidence it works.
- Omega-3 Fish OilSpring ValleySoftgel Capsule
- Omega-3 Fish OilSpring ValleySoftgel Capsule
- Omega-3 Fish OilSpring ValleySoftgel Capsule
- Omega-3 Fish OilSpring ValleySoftgel Capsule
- Omega 3 Fish OilOff marketKirkland SignatureSoftgel Capsule
- Omega-3 Fish OilSpring ValleySoftgel Capsule
- Omega-3 Fish OilSmart SenseSoftgel Capsule
- Omega-3 Fish OilOff marketPuritan's PrideSoftgel Capsule
- Omega-3 Fish OilOff marketVitamin WorldSoftgel Capsule
- Omega-3 Fish OilOff marketPuritan's PrideSoftgel Capsule
- Omega-3 Fish Oil 1290 mgOff marketPuritan's PrideSoftgel Capsule
- Omega-3 Fish Oil 1290 mgPuritan's PrideSoftgel Capsule
- Omega-3 Fish Oil 1290 mgOff marketPuritan's PrideSoftgel Capsule
- Omega-3 Fish Oil 1290 mgOff marketPuritan's PrideSoftgel Capsule
- Omega 3 Fish OilThe Vitamin ShoppeSoftgel Capsule
- Omega-3 Fish Oil 1000 mgOff marketNature's BlendSoftgel Capsule
- Omega 3 Fish OilOff marketThe Vitamin ShoppeSoftgel Capsule
- Omega 3 Fish Oil with Vitamin DOff marketIndiana Botanic GardensSoftgel Capsule
- Ultra Potency Omega-3 Fish OilOff marketSource NaturalsSoftgel Capsule
- Omega 3 Fish Oil ConcentrateSolgarSoftgel Capsule
Source: NIH Dietary Supplement Label Database (DSLD) · as of Sep 30, 2026
What to watch for
Generally safe; high doses can have a mild blood-thinning effect and cause a fishy aftertaste or GI upset. Choose products tested for heavy metals.