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Omega-3 DHA

Reviewed by the Nimbera editorial team · Last updated May 2026

NIH ODS cites observational evidence associating higher DHA intake with reduced dementia risk, but notes that RCTs in healthy older adults have not shown cognitive benefit, making evidence for supplementation in healthy individuals limited. DHA remains structurally essential for brain cell membrane integrity.$20-$50 for a 60-day supply

How to use

Take 500-1000 mg of algae-derived DHA (or combined EPA/DHA fish oil providing at least 500 mg DHA) daily with a meal containing fat. Algae-derived DHA (e.g., life's DHA) is bioequivalent to fish oil and suitable for vegans.

How it works

DHA is a primary structural component of neuronal cell membrane phospholipids, particularly in synaptic regions. Adequate DHA maintains membrane fluidity, supports efficient neurotransmitter receptor function, and modulates neuroinflammatory pathways.

Where to buy

Nordic Naturals Ultimate Omega, Carlson Omega-3, and Thorne Super EPA+DHA are third-party tested options available at Costco, iHerb, and direct brand sites. Algae-based: Ovega-3 and Solgar Omega-3 Vegan.

Typical cost: $20-$50 for a 60-day supply

Safety notes

High doses (above 3 g/day total omega-3) can increase bleeding time - consult a doctor if on blood thinners or before surgery. May cause fishy burps; enteric-coated capsules reduce this. Check for fish or shellfish allergy when using marine-derived products.

Drug & supplement interactions

  • Always tell your doctor or pharmacist about any supplements you take.
  • Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
  • Herbal remedies can affect how the body absorbs or metabolises drugs.
  • Check drugs.com interactions checker before starting.

Clinical source

NIH ODS, Omega-3 Fatty Acids Health Professional Fact Sheet, 2024

This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.