How to Choose a Fish Oil Supplement in Singapore: A 6-Point Checklist

How to Choose a Fish Oil Supplement in Singapore: A 6-Point Checklist

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    Walk into any pharmacy in Singapore and you'll find a whole shelf of fish oil. Big bottles, small bottles, "1,000mg", "triple strength", "buy 1 get 1 free". They all look similar, and the prices range from a few dollars to well over a hundred. 

    So how do you choose? 

    The good news is that you don't need a science degree. You just need to know where to look. Whether you're buying fish oil for the first time or wondering if your current bottle is worth the money, this six-point checklist will help you compare any brand with confidence, including ours. 

    Keep it handy for your next pharmacy trip or online sale. 


    Points 1 to 3: What's actually inside the capsule 

    1. Check the omega-3 concentration, not the front label 

    The big number on the front of the bottle (often "1,000mg") is usually the total oil in each capsule. The parts you're actually buying fish oil for are the omega-3s EPA and DHA, and they're often only a fraction of that total. 

    Here's how to check in 10 seconds: 

    1. Turn the bottle around and find the Supplement Facts panel. 

    1. Add the EPA and DHA per serving together. 

    1. Compare that number with the total fish oil per serving. 

    Example: a capsule with 1,000mg of fish oil, 180mg EPA and 120mg DHA contains 300mg of omega-3. That's 30% concentration. The other 70% is other oils. 

    This matters because with a low-concentration fish oil, you swallow other oils along with your omega-3s: other fats and filler oils that don't add to your EPA and DHA intake. A more concentrated oil means less of that, and fewer capsules to reach the amount on your label. It also helps you compare prices fairly: instead of price per bottle, work out the price per serving of EPA + DHA. 

    Want the full walkthrough? Read our guide, Decoding the Label: What Your Fish Oil Bottle Isn't Telling You. 

    2. Check the form: triglyceride (rTG) or ethyl ester (EE) 

    To concentrate fish oil, manufacturers usually convert it into a form called ethyl ester (EE). Some take an extra step and convert it back into the triglyceride structure found naturally in fish. This is called re-esterified triglyceride (rTG). 

    Why it matters: studies comparing the forms, such as Dyerberg et al. (2010), found the rTG form was absorbed more efficiently than the ethyl ester form. 

    How to check: look for "triglyceride", "rTG" or "TG form" on the label or the brand's website. If the form isn't stated anywhere, it's worth asking the brand directly. 

    We explain the difference in detail in Ethyl Esters vs. Re-Esterified Triglycerides. 

    3. Look for independent, third-party testing 

    Any brand can print "pure" or "high quality" on a box. Independent testing is how you know someone outside the company has checked. 

    One of the most recognised programmes for fish oil is IFOS (International Fish Oil Standards). IFOS tests products for: 

    • Omega-3 content: does the capsule contain what the label says? 

    • Freshness: has the oil oxidised (gone stale)? 

    • Contaminants: heavy metals, PCBs, dioxins and other impurities. 

    What makes IFOS especially useful is that it publishes the full test results online, listed by the product's batch (Lot) number. Just find the lot number printed on your box or bottle, look it up on the IFOS website, and you can see the results for the exact batch in your hands. If a brand claims testing but won't show you the results, treat that as a yellow flag. 

    • Every batch of WHC oil is tested by IFOS 

     

    Points 4 to 6: Freshness, sourcing and where you buy 

    4. Check freshness and packaging 

    Omega-3s are delicate. When fish oil is exposed to heat, light and air, it can oxidise and turn rancid. In Singapore's heat and humidity, how a product is packed and stored matters even more. 

    What to look for: 

    • Packaging that limits air and light, such as individual blister packs or dark, sealed bottles. 

    • A clear expiry date, with plenty of time left. 

    • A quick smell test: a fresh capsule should have a mild, clean scent. A strong, sharp or rancid smell is a sign the oil has gone off. 

    Each WHC soft gel is sealed in its own blister pack, so every capsule stays protected until the moment you take it. 

    5. Ask where the fish comes from 

    Not all fish oil is sourced the same way. A responsible brand should be able to tell you: 

    • Which fish are used. Small fish like anchovies and mackerel sit low in the food chain and are widely used for fish oil. 

    • Whether the fishery is sustainable. Look for independent certifications such as Friend of the Sea. 

    • How the oil is processed. Gentler methods use lower temperatures and fewer harsh solvents. 

    WHC uses only small, non-threatened fish species such as anchovies and mackerel, certified by Friend of the Sea. Krill, an important food source for whales, penguins and seals, is never used. At WHC, oil is purified using a low-temperature CO2 process instead of organic solvents. 

    6. Buy from authorised sellers only 

    Even the best product can't help you if what arrives isn't genuine. Counterfeit supplements can look identical to the real thing, and HSA advises consumers to be cautious of deals that seem too good to be true and to buy from trusted retailers with an established presence in Singapore. 

    Before you check out, especially during big online sales: 

    • Buy from the brand's official website or its official flagship store on marketplaces. 

    • Check the seller name carefully, not just the product photos and reviews. 

    • Be wary of prices far below the usual retail price. 

    For WHC, that means our official web store, our official Shopee and Lazada stores, or our partner clinics. Read more in Is Your Fish Oil Fake? 


    Your quick checklist 

    Screenshot this for your next shopping trip. 

    Check 

    What to look for 

    1. Concentration 

    EPA + DHA as a high proportion of the total oil 

    2. Form 

    "Triglyceride" or "rTG" stated on the label 

    3. Testing 

    Independent certification, such as IFOS, with results you can see 

    4. Freshness 

    Protective packaging, a clear expiry date 

    5. Sourcing 

    Small fish, sustainable certification, gentle processing 

    6. Seller 

    Official website, flagship stores or authorised retailers 

     

    Frequently asked questions 

    How much fish oil should I take? Follow the directions on your product's label. If you're pregnant, breastfeeding, taking medication or have a medical condition, check with your doctor or pharmacist before starting any new supplement. 

    Is a more expensive fish oil always better? Not necessarily. Price alone tells you very little. Compare the cost per serving of EPA + DHA, then check the form, testing and freshness using the checklist above. 

    Can I get omega-3 from food instead? Yes. Oily fish such as salmon, sardines and mackerel (including local favourite ikan kembung) are natural sources of EPA and DHA. Supplements are meant to complement a balanced diet, not replace it. 

    Should I keep fish oil in the fridge? Follow the storage instructions on your label. In general, keep it somewhere cool and dry, away from direct sunlight. In Singapore, avoid leaving it in a hot car or on a sunny windowsill. 


    The bottom line 

    Choosing fish oil gets much easier once you know what to look for. Flip the bottle, check the form, ask for proof of testing, and buy from a seller you trust. 

    We built WHC around these same six points. If you'd like to see how our products measure up, explore the WHC range, or contact our Singapore team with any questions. We're always happy to help. 

    This article is for general information only and is not a substitute for advice from a healthcare professional.