Moller's Cod Liver Oil 500 ml: Guide to Liquid Omega-3
Moller's 500 ml cod liver oil bottle is a Scandinavian classic — a liquid fish oil that Norwegian families have used for over 170 years. The liquid format delivers a higher EPA+DHA dose per teaspoon than most capsules, but requires conscious storage and dosing.
This guide explains what the Moller's 500 ml bottle actually contains, how liquid fish oil compares to capsules, and who this format suits best.
Who this guide is for
Adults and families considering liquid omega-3 instead of capsules. After reading, you will know whether the 500 ml bottle is a practical choice for you and how to get the most from it.
TL;DR
- Moller's 500 ml bottle contains cod liver oil rich in omega-3 (EPA+DHA), vitamin A, and vitamin D
- Typical dose: 5 ml (1 teaspoon) per day, providing approximately 1200 mg omega-3
- Liquid form absorbs quickly and delivers a larger omega-3 dose compared to standard capsules
- Cod liver oil contains natural vitamins A and D — account for this when combining with other supplements
- Store in the refrigerator after opening; use within 3 months
- Cost per mg of omega-3 is typically lower in liquid form than capsules
What is cod liver oil and how does it differ from fish oil
Cod liver oil comes from the liver of cod fish, while regular fish oil is pressed from the muscle tissue of small fatty fish (anchovy, sardine, mackerel). The key difference: cod liver oil contains significant amounts of vitamin A (retinol) and vitamin D (cholecalciferol) alongside EPA and DHA (Martindale, 2009).
This matters because:
- Vitamin A is fat-soluble and accumulates in the body. Overdose is possible, especially during pregnancy (Rothman et al., 1995).
- Vitamin D from cod liver oil covers a substantial part of daily needs, which is especially valuable in the Estonian climate.
- Regular fish oil typically does not contain vitamin A, making its dosing more flexible.
Composition and nutritional profile
Typical Moller's 500 ml cod liver oil composition (per 5 ml):
| Nutrient | Amount per 5 ml | % of daily value |
|---|---|---|
| Total omega-3 | ~1200 mg | – |
| EPA | ~400 mg | – |
| DHA | ~600 mg | – |
| Vitamin D | ~10 µg (400 IU) | 200% |
| Vitamin A | ~250 µg RE | 31% |
| Vitamin E | ~10 mg | 83% |
Exact values may vary by batch and flavour variant. Check the specific label.
Vitamin E is added as an antioxidant to slow oxidation of the fish oil in the bottle.
Liquid vs capsules: direct comparison
| Feature | Liquid 500 ml | Capsules (1000 mg) |
|---|---|---|
| EPA+DHA per dose | ~1200 mg / 5 ml | ~300 mg / capsule |
| Capsules needed for same dose | – | 4 capsules |
| Contains vitamin A | Yes | Usually no |
| Taste | Fishy (flavoured variants available) | Tasteless |
| Shelf life after opening | 3 months in fridge | 6+ months at room temp |
| Cost per gram omega-3 | ~€0.10–0.15 | ~€0.20–0.40 |
| Travel-friendly | No | Yes |
Liquid form is more economical and delivers a larger dose, but capsules are more convenient and stable.
Dosing
Adults
5 ml (1 teaspoon) per day with food. This is Moller's standard dose, providing approximately 1200 mg omega-3. EFSA has confirmed that 250 mg EPA+DHA per day supports normal cardiac function, and higher intakes (up to 3000 mg) are safe for long-term use (EFSA, 2012).
Children (from age 4)
2.5 ml (half a teaspoon) per day. For younger children, consult a doctor, especially given the vitamin A content.
Pregnant and breastfeeding women
Be cautious with vitamin A. Retinol above 3000 µg RE per day has been associated with foetal development issues (Rothman et al., 1995). Moller's standard dose (250 µg RE) is well within this limit, but do not combine it with other vitamin A sources without medical advice.
Storage and maintaining quality
Omega-3 fatty acids oxidise rapidly on contact with air, light, and heat. Oxidised fish oil tastes and smells rancid, and its beneficial properties diminish (Albert et al., 2015).
Practical tips:
1. Store unopened bottles in a cool, dark place
2. After opening, refrigerate — always
3. Use the opened bottle within 2–3 months
4. Close the cap tightly immediately after each use
5. If the oil smells strongly fishy or tastes bitter — discard it
Albert et al. (2015) tested fish oils sold in New Zealand and found that most exceeded recommended oxidation levels. Quality brands like Moller's control this more rigorously, but storage is still your responsibility.
Flavour variants
Moller's offers the 500 ml bottle in several flavours:
- Natural — no added flavour, strong fish taste
- Lemon — the most popular, mildly citrus
- Tutti Frutti — fruity, primarily for children
Flavouring does not affect omega-3 content or bioavailability. It is purely a palatability question. If the fish taste is a barrier, the lemon variant is praised by many adults.
Common mistakes
1. Forgetting doses after initial enthusiasm — liquid fish oil requires a daily habit. Place the bottle visibly on your breakfast table.
2. Room temperature storage — this drastically shortens quality life, especially in summer.
3. Combining with vitamin A supplements — cod liver oil already contains vitamin A. Doubling up may be excessive.
4. Choosing cheap alternatives — not all liquid fish oils are equal. Check the TOTOX value and pay attention to brand reputation.
5. Eyeballing the teaspoon — use a measuring spoon for accuracy.
Frequently Asked Questions
Does a Moller's 500 ml bottle last a whole month?
Yes, at 5 ml per day the 500 ml bottle lasts approximately 100 days — over 3 months. This makes it one of the most economical omega-3 sources available.
Are cod liver oil and regular fish oil the same?
No. Cod liver oil contains vitamins A and D in addition to omega-3, which regular fish oil does not. More detail in our cod liver oil guide.
Can I mix liquid fish oil into food?
Yes. Many people mix it into smoothies, yoghurt, or salad dressing. Avoid adding it to hot food — high temperatures damage omega-3 fatty acids.
Why does my fish oil smell rancid?
It has likely oxidised. Check the expiry date and storage conditions. If the bottle has been open for over 3 months or stored at room temperature, discard it and buy a new one.
Is liquid fish oil better for children than capsules?
It depends on the child. Liquid form delivers a higher dose, but taste can be an issue. Flavoured variants (lemon, tutti-frutti) help. For small children who cannot swallow capsules, liquid is the only option.
Estonia context
During Estonia's dark winter months, when sunlight is scarce and fish consumption drops, cod liver oil is especially relevant — it covers both omega-3 and vitamin D needs simultaneously. Moller's is widely available in Estonian pharmacies and stores, and is one of the most recognised omega-3 brands in the Baltics.
The 500 ml bottle typically costs €15–22, making it one of the most affordable omega-3 sources overall. MaxFit offers Moller's products with free shipping on orders over €75.
References
- EFSA Panel on Dietetic Products, Nutrition and Allergies (2012). Scientific Opinion on the Tolerable Upper Intake Level of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and docosapentaenoic acid (DPA). EFSA Journal, 10(7), 2815.
- Rothman, K. J., Moore, L. L., Singer, M. R., et al. (1995). Teratogenicity of high vitamin A intake. New England Journal of Medicine, 333(21), 1369–1373.
- Albert, B. B., Cameron-Smith, D., Hofman, P. L., & Cutfield, W. S. (2015). Oxidation of marine omega-3 supplements and human health. BioMed Research International, 2015, 143109.
- Martindale, W. (2009). Cod Liver Oil. In Martindale: The Complete Drug Reference (36th ed.). Pharmaceutical Press.
- EFSA Panel on Dietetic Products, Nutrition and Allergies (2010). Scientific Opinion on the substantiation of health claims related to EPA, DHA. EFSA Journal, 8(10), 1796.
Bottom line
Moller's 500 ml cod liver oil is an economical, high-dose omega-3 source that suits families willing to build a daily habit around the liquid format. Pay attention to storage — oxidised fish oil does you no good. Factor in the vitamin A content, especially if you use other supplements.
Browse Moller's cod liver oil at MaxFit →
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