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Omega-3 Fish Oil (via iHerb)
🐟 Omega-3
Omega-3
The most-recommended foundation, full stop.
What it is
Omega-3s are essential fats — mainly EPA and DHA — that your body can't make on its own and most people don't get enough of unless they eat oily fish regularly. They're building blocks for your cell membranes, brain, and eyes.
Why the experts include it
Omega-3 is arguably the most consistently recommended supplement among evidence-based health voices — the one that shows up no matter whose list you read. The usual emphasis is a meaningful combined EPA/DHA amount in the triglyceride form, from oil that's been tested for purity and freshness.
Why it matters on a GLP-1 journey
When you're eating less overall, it's easy to fall short on nutrients that only come from a few foods — and oily fish is one of them. A clean omega-3 helps fill that gap without adding much volume, which matters when appetite is low.
Omega-3 for everyday wellbeing
Oily fish is one of the few foods that supplies omega-3, and it's easy to miss when meals are smaller. A clean, tested omega-3 fills that gap without adding much volume.
General amounts (not a prescription)
A common target is the combined EPA + DHA amount printed on the label; many products land around 1–2 g of total omega-3 per serving.
What to look for in a clean product
- IFOS-tested or molecularly distilled for purity and freshness
- Triglyceride (rTG) form for absorption
- A clear EPA + DHA amount on the label — not just 'fish oil'
- An algae-oil option if you're vegetarian or vegan
Our vetted picks
Three clean, third-party-tested options — Good, Better, Best.
betterNordic Naturals
Ultimate Omega (via iHerb)
bestMomentous
Omega-3
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Common questions
How much omega-3 should I take on a GLP-1?
Most general-wellness guidance lands around 1–2 g of combined EPA + DHA per day. When you're eating less, you may be having less oily fish, so a concentrated fish or algae oil helps fill that gap without adding much volume. Look for a product that lists EPA and DHA in milligrams separately, not just total fish oil weight. A dietitian can refine the amount based on your overall food intake.
What does omega-3 do for muscle on a GLP-1?
Omega-3 plays a supporting role: it doesn't replace protein, but as part of a diet that already meets your protein target, it rounds out the nutrition that helps you hold onto muscle while you're eating less. The two levers that matter most are still adequate protein and a little resistance movement. Think of a clean omega-3 as filling a common gap, not as the main event.
Fish oil vs algae oil on a GLP-1 — which is better?
Both deliver EPA and DHA. Algae oil is actually where fish get their omega-3, so it's equally effective and a good choice if fish burps or a plant-based diet are concerns. Fish oil is often cheaper per gram of EPA + DHA. Either way, check the label for total EPA + DHA per serving, keep the bottle in the fridge to slow oxidation, and pick a brand that tests for purity.
Do I need omega-3 if I already eat salmon a few times a week?
Two to three servings of oily fish a week may already cover you for general wellness. When appetite drops, though, fish often gets cut along with everything else. Track a few honest weeks — if oily fish shows up consistently, a supplement may be redundant. If your meals have shrunk a lot, a small daily capsule covers the gap without adding food volume.
Can omega-3 help with nausea on a GLP-1?
Omega-3 is a nutrition supplement, not a remedy for how the medication makes you feel — anything about nausea or your prescription is a conversation for your clinician or pharmacist. What omega-3 can do is support overall nutrition when appetite is low and food variety narrows. Taking it with a little food rather than on an empty stomach tends to sit more comfortably for most people.
General wellness and nutrition information, not medical advice. We help with nutrition, not medication — talk to your clinician or pharmacist about your medication and routine.