Table S1.
A detailed description of the encapsulated marine fish oil supplements examined in the present study
| Product, trade name | Company: manufacturer or distributor | Product type | mg oil pr capsule | Total mg Omega-3 pr capsule | mg DHA pr capsule | mg EPA pr capsule | Recommended daily dose, number of capsules | Type of antioxidant |
|---|---|---|---|---|---|---|---|---|
| Daily Wellness Biomega fish oil, highly concentrated, 60% Omega-3 1000 mg | Daily Wellness, USA | Unspecified fish oil from deep-sea fish | 1000 | 600 | 200 | 300 | 1 | Natural mix of tocopherols |
| Daily Wellness Seal oil Omega-3, DPA, EPA, DHA 500 mg | Daily Wellness, USA | Seal oil | 500 | 102.5 | 41.2 | 31.3 | 6 | d-α-Tocopherol |
| Eskimo-3 with Pufanox | Cardinova, Sweden | Unspecified fish oil | n.s.a | 170 | 55 | 85 | 3 | Ascorbylpalmitat, lecitin |
| Extra strong omega-3, with krill antioxidant (from Biopharma) | Biopharma, Norway | Unspecified fish oil and krill oil | 500 | 285 | 177 | 90 | 2 | d-α-Tocopherol |
| Fri Flyt Omega-3 | Vesterålens naturprodukter AS, Norway | Unspecified fish oil | 530 | 350 | 110 | 165 | 2 | d-α-tocopherol |
| Krill-Omega | Pharmatec AS, Norway | Unspecified fish oil concentrate and krill oil | n.s.a | 285 | 177 | 90 | 2–4 | d-α-Tocopherol |
| Lofotkapselen, pure highly concentrated Omega-3 | OmegaVita, Norway | Concentrated anchovetas oil | 596 | 304 | 107.5 | 161 | 2 | d-α-Tocopherol |
| Möller's double | Axellus AS, Norway | Unspecified fish oil concentrate | n.s.a | 350 | n.s.a,b | n.s.a,b | 2 | d-α-Tocopheryl acetate |
| Möller's Omega-3 highly concentrated, with peppermint taste | Axellus AS, Norway | Unspecified fish oil | n.s.a | 500 | 200 | 250 | 2 | Tocopherols |
| Natural Omega-3 (from Biopharma) | Biopharma AS, Norway | Unspecified fish oil | n.s.a | 500 | 60 | 90 | 2–6 | d-α-Tocopherol |
| Norwegian Fish oil, Salmon oil | Norwegian Fish oil AS, Norway | Salmon oil | 500 | n.s.a | 45 | 30 | 2 | Tocopherol, rosemery extract, ascorbylpalmitate |
| Nycoplus Omega-3, 1000 mg | Nycomed Pharma, Norway | Unspecified concentrated fish oil | 1000 | n.s.a | 220c | 321.7c | 1–2 | Tocopherols |
| Nycoplus Seal oil, 1000 mg | Nycomed Pharma, Norway | Seal oil | 1000 | 200 | 80 | 60 | 2–3 | d-α-Tocopherol |
| Oil4Life Cardio | Produced in Norway for Itogha AS | Unspecified fish oil and olive oil | ||||||
| OmegaPro | VitaeLab AS, Norway | Unspecified fish oil | n.s.a | 330 | 120 | 166.5 | 2 | Extract rich in tocopherols |
| Pikasol Hele deg, highly concentrated Omega-3, 880 mg | MöllerCollett AS, Norway | Unspecified fish oil | 880 | 530 | 185 | 265 | 2–5 | Tocopherols |
| PreviShop Omega-3 Forte, highly concentrated fish oil | PreviShop, marketed by Validus NnP AS, Norway | Unspecified fish oil | 1000 | 600 | 220 | 330 | 2 | d-α-Tocopherol |
| Ruis Omega-3 Seal oil, capsulesd | Produced for Naturkost S. Rui as, Norway and Medica Nord, Norwayd | Seal oil | 750 | 140 | 65d | 52.6d | 4–6 | d-α-Tocopherol |
| Ruis Omega-3 Seal oil, highly concentrated | Produced for Medica Nord, Norway | Seal oil | 1000 | 360 | 150 | 80 | 1–2 | Extract rich in tocopherols |
| Seal oil (from Biopharma) | Biopharma, Norway | Seal oil | 500 | 105 | 34 | 42 | 2–3 | d-α-Tocopherol |
| Suncap Omega-3 | Produced by Lysi, Iceland for SunCap, Norway | Unspecified fish oil | 550 | 165 | 66 | 99 | 2 | Vitamin E |
| Triomega Original, highly concentrated | Midelfart Sonesson, Norway | Unspecified fish oil | 500 | 310 | 108.5 | 155 | 2–3 | Tocopherols |
| Triomega, Omega-3+Q10, heart | Midelfart Sonesson, Norway | Concentrated unspecified fish oil | n.s.a | 410 | 138.5 | 198.5 | 2 | Coenzyme Q10 |
| Triple Omega-3, extra strong (from Biopharma) | Biopharma, Norway | Unspecified fish oil | 500 | 325 | 110 | 165 | 2 | d-α-Tocopherol |
Not specified on the label.
EPA+DHA=250 mg/capsule.
One box claimed a different content than the two others. This value is an average of the three boxes. Box 1 and 2: DHA=225 mg/capsule, EPA=325 mg/capsule, Box 3: DHA=210 mg/capsule, EPA=315 mg/capsule.
This product was produced for two different distributors. Two of the boxes were produced for Medica Nord AS, Norway and the other two for Naturkost S. Rui as, Norway. The value presented in the table is an average of four boxes.The two boxes with Medica Nord logo contain: total omega-3=122.5 mg/capsule, DHA=48 mg/capsule, EPA=41.3 mg/capsule The two boxes with Naturkost logo contain: total omega-3s157,5 mg/capsule, DHA=82 mg/capsule, EPA=64 mg/capsule. However, these differences are most likely due to different batches. Also the liquid version of Ruis seal oil that were tested were produced for the same two distributors. However, even though there were variations in fatty acid composition between the boxes, these differences were seen independently of distributor.