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Omega-3 Fatty Acids (EPA/DHA)
Essential fatty acids critical for brain health, mood regulation, and reducing inflammation throughout the body.
What the evidence says
Omega-3 helped in about half (15/23) of the studies that measured an effect — promising, but not unanimous.
Most evidence is from high-quality meta-analyses and randomised trials published 2015–2026 with a typical study size of 1,830 participants.
Based on 63 studies · 38 meta-analyses · 10 RCTs · 539,263 total participants
Confidence
HighWhat the studies found
By outcome
See full supplement plans that include Omega-3.
Omega-3 has an evidence score of 9/10 — very strong evidence based on 62 indexed studies, including 30 meta-analyses. Essential fatty acids critical for brain health, mood regulation, and reducing inflammation throughout the body.
The commonly studied dose of Omega-3 is 2-3g combined EPA+DHA daily. Research points to an estimated optimal dose around 2g, with a minimum effective dose near 1g. Individual response varies — start low and adjust.
The best time to take Omega-3 is with meals. Take it with food. Omega-3 fatty acids (EPA and DHA) are fat-soluble and require dietary fat for proper absorption.
Magnesium
Probably helpsSupports 300+ enzymatic reactions — critical for sleep, stress response, muscle function, and cognitive health.
Acetyl-L-Carnitine
Likely helpsAcetylated carnitine that crosses the blood-brain barrier to fuel mitochondrial energy and donate acetyl groups for acetylcholine synthesis.
Last reviewed May 2026 · evidence from 40 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Omega-3 fatty acids, particularly EPA and DHA from fish oil, are essential fats that the body cannot produce. They play crucial roles in brain structure, reducing inflammation, supporting cardiovascular health, and regulating mood. Higher EPA ratios are particularly beneficial for mood disorders.
DHA is a major structural component of brain tissue
Reduces systemic inflammation throughout the body
Supports serotonin and dopamine signaling
How Omega-3 works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
Tap node to isolate • Pinch to zoom • Tap edge for research
2-3g combined EPA+DHA daily
Take with food
| Form | Type |
|---|---|
| 💧Triglyceride form fish oil | Recommended |
| 💊Ethyl ester form | Alternative |
| 💊Algae-based (vegan) | Alternative |
| 💧Krill oil | Alternative |
Triglyceride form absorbs better than ethyl ester. Look for IFOS certification for purity. Algae-based provides DHA but limited EPA.
Minimum: 8 weeks
Optimal: 12 weeks
Cycling: Not required
Note: Take with fatty meals for best absorption. Can split dose AM/PM. Higher EPA ratio (2:1 or more) preferred for mood benefits.
You can get omega-3 from these foods and drinks. Doses are typical per-serving estimates — actual content varies by brand, brew, cooking, etc.
5250 mg per 3.5 ozs
3.5 oz cooked fillet. Wild Atlantic 1500–2000 mg omega-3 + 600–1000 IU vitamin D; farmed considerably lower.
5550 mg per 3.75 ozs
One standard tin (3.75 oz) in oil or water, drained. The edible soft bones are why sardines are calcium-rich.
7300 mg per tbsp
ALA form, not EPA/DHA. Body converts only ~5–10% of ALA to EPA. Vegan source; less bioavailable than fish.
Based on multiple meta-analyses showing EPA-dominant formulas >1g/day most effective. Effects plateau around 2-2.5g. Adjunctive use with antidepressants shows better outcomes than monotherapy.
Reduction in depressive symptoms
Lower CRP and inflammatory markers
Some experience fishy burps or aftertaste
Enhanced concentration and mental clarity
Recommended; DHA important for fetal brain development. Use purified fish oil.
Generally safe; adjust dose by weight
May increase bleeding risk; monitor INR if on warfarin
Additive blood pressure lowering effect
Tip: Take with meals, freeze capsules, or use enteric-coated
Tip: Take with food, reduce dose initially
Tip: Reduce dose if concerning
Both are fat-soluble and support mood/brain health
Enhanced mood support and immune function
Both reduce inflammation through different pathways
Synergistic anti-inflammatory effects
Different cardiovascular mechanisms
Multi-target cardiovascular protection
Both support cardiovascular and skin health
Comprehensive cardiovascular and anti-inflammatory support
Both support brain health and mood
Comprehensive brain and mood support
Omega-3 for triglycerides; bergamot for LDL
Comprehensive lipid management
Different healthy fats with complementary benefits
Comprehensive anti-inflammatory and metabolic support
Omega-3 may enhance carnitine's effects on fat oxidation
Improved fat metabolism and recovery
Both support brain structure and function
Comprehensive brain health support
Both support cardiovascular health
Comprehensive heart and energy support
Different essential fatty acids with complementary effects
Balanced omega fatty acid profile
Both support brain structure and function
Comprehensive brain health support
DHA is concentrated in retina; omega-3 improves carotenoid absorption
Enhanced eye health and better lutein uptake
DHA is concentrated in retinal membranes
Comprehensive eye health support
Both support mood through different mechanisms
Comprehensive mood and antioxidant support
Both support cardiovascular health (use caution — both affect clotting)
Comprehensive cardiovascular support
PEA is a fatty acid amide; omega-3s support similar pathways
Comprehensive anti-inflammatory support
Both support brain cell membrane health
Comprehensive phospholipid and fatty acid support
Different lipid targets
Comprehensive lipid management
Both support mood through different mechanisms
Enhanced antidepressant effects
Both support mood through different mechanisms
Comprehensive mood support
Both reduce inflammation
Enhanced recovery and anti-inflammatory effects
MVIs do not contain essential fatty acids. Omega-3s complement the micronutrient coverage of MVIs with anti-inflammatory macronutrient support.
Comprehensive micronutrient and essential fatty acid coverage for cardiovascular, brain, and immune health
Omega-3 fatty acids provide structural neuronal membrane support and reduce neuroinflammation, complementing sage's AChE inhibition and antioxidant neuroprotection.
Comprehensive neuroprotection through anti-inflammatory (omega-3) and cholinergic/antioxidant (sage) mechanisms
Omega-3 fatty acids complement PSO's omega-6 fatty acids, improving the overall fatty acid ratio and amplifying anti-inflammatory cardiovascular benefits
Balanced omega fatty acid profile with enhanced cardiovascular and anti-inflammatory support
Omega-3 is generally well-tolerated and considered safe for most healthy adults at recommended doses. The most commonly reported side effects are fishy burps/aftertaste, GI upset, easy bruising. Use caution if any of these apply to you: Fish/shellfish allergy (use algae-based); Upcoming surgery (stop 1-2 weeks before).
Curcumin
Likely helpsTurmeric's active compound that modulates NF-kB inflammatory pathways — supports mood, joint health, and post-exercise recovery.