By team Briyo Supplements · Updated August 2026
Fish oil is one of the most-bought supplements in the world, and also one of the most confusingly sold. Softgels, minis, cod liver, flaxseed, EPA, DHA, percentages on labels that seem designed to blur past you. Let's cut through it - here's how to actually choose.
Start with the only two letters that matter: EPA and DHA
The reason anyone takes fish oil is two omega-3 fatty acids: EPA and DHA. They're what the research is about - heart, brain, eyes, joints. The fish oil is just the delivery vehicle.
Which leads to the single most useful label-reading trick you'll learn today: ignore the headline number, read the EPA + DHA line. A capsule can say "1000 mg fish oil" and contain only 300 mg of actual EPA + DHA. Two products with the same headline can differ by double in what counts. Flip the bottle, find the EPA and DHA milligrams, and compare those.
The decision, person by person
You want general daily coverage - heart, brain, the works. A standard Fish Oil 1000 mg softgel once a day is the workhorse choice. Boring and effective.
You struggle to swallow large softgels. This is the most common quiet complaint in the category, and the answer is simply a smaller capsule: Fish Oil Mini 450 mg. Two minis roughly equal one large - same nutrients, none of the gulping.
You want omega-3 plus vitamins A and D. That's Cod Liver Oil - the traditional option. It carries less EPA/DHA than a concentrated fish oil but adds the two vitamins. Sensible if those gaps apply to you; skip it if you already supplement D separately.
You're vegetarian. Flaxseed oil provides ALA, a plant omega-3 your body partially converts to EPA/DHA. The conversion is inefficient - honest fact - but for vegetarians it's the practical route, alongside walnuts and chia in the diet.
Your focus is heart + energy specifically. Combinations like CoQ10 + Omega-3 combine both nutrients in a single product.
The three quality checks that separate good from cheap
- Third-party testing. Fish concentrate what's in their water, which can include heavy metals. Independent lab testing for purity is the non-negotiable - if a brand doesn't mention it, assume it didn't happen.
- Freshness. Rancid fish oil is worse than none. Buy sensible bottle sizes, store away from heat and light, and if a capsule smells genuinely foul when bitten, bin the bottle.
- The fishy-burp question. The classic objection, and mostly solvable: take it with meals, split the dose, or refrigerate the bottle. Mini softgels help here too.
How much, and when?
Common guidance for general wellness sits around 250-500 mg of combined EPA + DHA daily - more for specific goals, which is doctor territory. Take it with a meal containing fat: omega-3s absorb dramatically better with food, and it kills the burps. Time of day is irrelevant; consistency isn't.
One honest note on expectations: omega-3 is a slow, structural nutrient. It supports long-term heart, brain and joint health - it is not something you feel on Tuesday because you took it on Monday. Judge it in months.
FAQ
Fish oil vs cod liver oil - which one? Fish oil for maximum EPA/DHA per capsule. Cod liver oil when you also want its natural vitamins A and D. Not both at once unless a doctor says so - vitamin A adds up.
What should I look for on the label? The EPA + DHA milligrams (not the headline oil quantity), evidence of third-party testing, and a plausible source. That's 90 percent of choosing well.
When should I take fish oil? With whichever daily meal has some fat in it. Lunch or dinner works for most people.
Is flaxseed oil as good as fish oil? It's the best plant route, but conversion of ALA to EPA/DHA is limited - vegetarians should set expectations accordingly and be consistent.
Can fish oil thin the blood? At high doses omega-3s have a mild blood-thinning effect - if you're on anticoagulants or heading into surgery, tell your doctor you take fish oil.
Briyo products are food supplements and are not intended to diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before use if you have a medical condition or are taking medication.