How much omega-3 per day is actually sensible — and how much is too much? This is a question many people ask when they want to start supplementing or improve their Omega-3 Index. In this article you will find all the relevant dosage figures summarised and explained clearly, so you can make a well-informed decision.
TL;DR — The Key Points
- The basis is 250 mg EPA+DHA daily for normal heart function; for brain function and vision the authorised claim requires 250 mg DHA daily (EU Regulation No. 432/2012).
- The authorised claims on the maintenance of normal blood triglyceride levels and normal blood pressure apply from 2,000 and 3,000 mg EPA+DHA daily respectively (Regulation (EU) No 432/2012).
- For pregnant and breastfeeding women, the claim on the normal brain and eye development of the child applies with 200 mg DHA daily in addition to the recommended daily intake of 250 mg EPA+DHA (Regulation (EU) No 440/2011).
- Standard fish oil capsules (1 g) often contain only 300 mg EPA+DHA (30% concentration) — high-concentrate products deliver 600–850 mg per capsule.
- EFSA classifies doses of up to 5,000 mg EPA+DHA daily as safe; always consult a doctor when taking blood thinners or before surgery.
The right dose depends on your starting level. You will know yours after an Omega-3 Index test.
Test & prices →Authorised health claims — the official conditions of use
Which health claims may be made about EPA and DHA was decided by the European Commission on the basis of EFSA scientific opinions (Regulation (EU) No 432/2012; Great Britain kept the same claims in its own register). Each of these health claims only applies from a certain daily amount. These conditions of use are the legal basis for product statements and a good reference point when comparing supplements.
250 mg EPA+DHA for the heart, 250 mg DHA for brain and eyes
The authorised health claims distinguish the two fatty acids:
- “EPA and DHA contribute to the normal function of the heart” – from 250 mg EPA+DHA daily (EPA and DHA combined)
- “DHA contributes to the maintenance of normal brain function” – from 250 mg DHA daily
- “DHA contributes to the maintenance of normal vision” – from 250 mg DHA daily
Important: the claims refer to the maintenance of normal functions — not to therapeutic effects. 250 mg is a condition of use, not a dose for a particular purpose.
According to nutrition societies, the average intake of EPA and DHA in Germany is often below this threshold — one possible reason why many people have a low Omega-3 Index. The D-A-CH reference values of the German Nutrition Society (DGE) provide guidance.
3,000 mg EPA+DHA for normal blood pressure
For the authorised health claim "contributes to the maintenance of normal blood pressure", a considerably higher condition applies: 3,000 mg EPA+DHA daily (Regulation (EU) No 432/2012), together with the advice not to exceed a supplemental daily intake of 5 g EPA+DHA. This amount is difficult to achieve through normal diet alone — even with daily fish consumption. It is linked to the maintenance of normal values and is not an intake or treatment recommendation for raised blood pressure. You can find further information in the article Omega-3 and blood pressure. If you have existing symptoms or conditions, a medical check-up is advisable.
2,000 mg EPA+DHA for the maintenance of normal blood triglyceride levels
For the authorised health claim "contributes to the maintenance of normal blood triglyceride levels", the condition is 2,000 mg EPA+DHA daily (Regulation (EU) No 432/2012), again with the advice not to exceed a supplemental daily intake of 5 g EPA+DHA. This claim refers to the maintenance of normal values and is not a statement about the treatment of raised blood lipids. Higher amounts have also been investigated in the scientific literature on this topic; such figures are not intake recommendations. You can find further information in the article Omega-3 and triglycerides. If your blood lipid values are abnormal, a medical check-up is advisable.
200 mg additional DHA: brain and eye development of the foetus and breastfed infant
For pregnant and breastfeeding women there are two separate authorised claims: “Docosahexaenoic acid (DHA) maternal intake contributes to the normal brain development of the foetus and breastfed infants” and “… to the normal development of the eye of the foetus and breastfed infants”. Condition: a daily intake of 200 mg DHA in addition to the recommended daily intake of 250 mg EPA+DHA for adults (Regulation (EU) No 440/2011). DHA is the decisive fatty acid here: it makes up a considerable proportion of brain matter and the retina, and is incorporated particularly intensively into the foetal brain during the last months of pregnancy.
DGE recommendations in comparison
In its D-A-CH reference values for fat, the German Nutrition Society (DGE) has also formulated recommendations for long-chain omega-3 fatty acids. These largely align with the EFSA specifications, although they sometimes place different emphases.
General population: 250 mg EPA+DHA per day
The DGE also recommends a daily intake of at least 250 mg EPA+DHA for adults. The DGE emphasises that regular consumption of oily sea fish (salmon, herring, mackerel, sardines) — at least one to two portions per week — should be the preferred source.
Those who do not eat fish or dislike the smell can meet this requirement through fish oil or algae oil capsules.
Pregnant and breastfeeding women: 200 mg extra DHA
In line with EFSA, the DGE recommends that pregnant and breastfeeding women increase their DHA intake by 200 mg daily. In practice, if during pregnancy you cannot or do not wish to eat oily fish every day, a DHA supplement — ideally from algae oil, which delivers DHA directly — is a sensible and safe alternative.
| Health claim | Minimum dose | Fatty acid | Note |
|---|---|---|---|
| Normal heart function | 250 mg/day | EPA+DHA | Basic supply |
| Normal brain function | 250 mg/day | DHA | DHA content decisive |
| Normal vision | 250 mg/day | DHA | DHA content decisive |
| Normal blood pressure | 3,000 mg/day | EPA+DHA | max. 5 g supplemental/day |
| Normal blood triglyceride levels | 2,000 mg/day | EPA+DHA | max. 5 g supplemental/day |
| Foetal brain/eye development | 200 mg DHA extra | DHA | In addition to 250 mg EPA+DHA (Reg. 440/2011) |
Amounts investigated in studies, by topic
The conditions of use of the authorised claims are the legally secured reference. Beyond these, different amounts have been investigated in the scientific literature for various topics. The following overview assigns these amounts to the respective fields of research. They are expressly not intake, dosage or treatment recommendations, nor are they statements about the prevention, relief or cure of disease. If you have health complaints or existing conditions, the amount and suitability should be clarified with a doctor.
Basic supply (250–500 mg)
For general supply, 250–500 mg EPA+DHA daily is frequently cited. This amount corresponds to approximately two portions of oily fish per week or one standard capsule containing 500 mg fish oil. The authorised claim on normal heart function applies from 250 mg EPA+DHA daily. The buying guide helps you properly assess the quality of fish oil products.
Joints and inflammatory processes (amounts investigated in studies)
In studies on joints and inflammatory processes, amounts in the range of 1,000–3,000 mg EPA+DHA daily have frequently been investigated. EPA is considered a precursor of certain eicosanoids. These figures describe amounts used in research and are not intake or treatment recommendations for joint complaints or inflammatory diseases. In sport, some athletes orient themselves to similar orders of magnitude — more details in the article Omega-3 for athletes.
Blood triglyceride levels (from 2,000 mg, authorised claim)
The authorised health claim on the maintenance of normal blood triglyceride levels requires 2,000 mg EPA+DHA daily. Higher amounts have also been investigated in the scientific literature on this topic. These figures relate to research or prescription medicines and are not intake or treatment recommendations. If your blood lipid values are abnormal, the approach should be clarified with a doctor.
Blood pressure (from 3,000 mg, authorised claim)
The authorised health claim on the maintenance of normal blood pressure is linked to 3,000 mg EPA+DHA daily. This amount relates to the maintenance of normal values and is not a treatment recommendation for raised blood pressure. Further information in the article Omega-3 and blood pressure. If you have high blood pressure, a medical check-up is required.
| Topic | Amount investigated in studies (EPA+DHA) | Classification |
|---|---|---|
| Basic supply | 250–500 mg/day | authorised claim (normal heart function), DGE |
| Joints / inflammatory processes | 1,000–3,000 mg/day | amount investigated in studies |
| Normal blood triglyceride levels | from 2,000 mg/day | authorised health claim |
| Normal blood pressure | from 3,000 mg/day | authorised health claim |
Special population groups
Which amounts apply to the authorised health claims and how much EPA and DHA comes from the diet differs by life stage. Here is an overview of the most important groups.
Pregnant and breastfeeding women
Pregnancy and breastfeeding are the life stages with the highest DHA requirement. The unborn child and infant cannot synthesise sufficient DHA themselves — they are entirely dependent on the mother's supply. The authorised claim on the brain and eye development of the child applies with 200 mg DHA daily in addition to the recommended daily intake of 250 mg EPA+DHA for adults (Regulation (EU) No 440/2011). Please discuss supplements with your GP or midwife.
Algae oil is the preferred source here, as it delivers DHA directly, is free from heavy metals and is suitable for vegans. More details in the article Omega-3 in pregnancy and in the article Omega-3 for pregnant women.
Children and adolescents
No specific EFSA health claims exist for children. Paediatric societies, however, recommend a daily DHA intake based on body weight: roughly 10–15 mg DHA per kg body weight. For a 25 kg child, this corresponds to approximately 250–375 mg DHA daily. In practice, a specialist children's fish oil supplement or regular fish consumption is usually sufficient. For dosage in children, the omega-3 calculator is also useful.
Older adults
Research on omega-3 supply in later life has often investigated amounts between 1,000 and 2,000 mg EPA+DHA daily, including in the areas of muscle and cognitive function. These figures describe amounts investigated in studies and are not treatment recommendations. Older adults taking blood thinners should agree the amount with their doctor (see the warning box below). An overview of omega-3 supply in older age can be found in the article Omega-3 for seniors.
Vegans and vegetarians
Those who do not eat fish consume almost no EPA and DHA through food. ALA from linseed, chia seeds or walnuts is converted only inefficiently in the body — the conversion rate is below 10%.
Vegans should therefore pay particular attention to adequate supplementation: algae oil capsules deliver EPA and DHA directly. The dosage recommendations correspond to the general values, although 500–1,000 mg daily is often more sensible for vegans than the minimum dose. All details in the article Omega-3 for vegans.
How to calculate the dose from food and capsules
Many people underestimate how difficult it is to obtain sufficient EPA and DHA from food alone. The following overview shows the actual content values.
How much EPA+DHA is in a portion of salmon?
A portion of salmon (150 g, cooked) contains, depending on origin:
- Wild salmon (Pacific): approx. 1,800–2,500 mg EPA+DHA
- Farmed salmon (Atlantic): approx. 2,000–3,000 mg EPA+DHA
- Herring (150 g): approx. 2,500–3,000 mg EPA+DHA
- Mackerel (150 g): approx. 2,000–3,500 mg EPA+DHA
- Tinned tuna: only approx. 150–300 mg EPA+DHA (processing losses)
Two portions of oily fish per week therefore deliver on average approximately 500–700 mg EPA+DHA daily — sufficient for basic supply.
Reading labels correctly
With fish oil and algae oil supplements, a common mistake is to confuse the total amount of fish oil with the EPA+DHA content. A typical fish oil contains approximately 30% EPA+DHA — a capsule containing 1,000 mg fish oil therefore delivers only about 300 mg EPA+DHA. High-concentrate products (e.g. 70%+ concentration) deliver significantly more active ingredient from the same capsule size.
When buying, look for the explicitly stated EPA and DHA content in milligrams per serving — not the total fish oil amount. More details in the buying guide for omega-3 supplements.
It is also worth looking at the EPA to DHA ratio — for the health claims, the amounts of EPA+DHA and DHA count, not the ratio. All practical intake tips can be found in the article How to take omega-3 correctly.
Caution: interactions at high doses
At doses above 1,000–2,000 mg EPA+DHA daily, omega-3 can influence blood clotting. This is generally harmless for healthy individuals. However, it becomes relevant in the following cases:
- Taking blood thinners (warfarin, rivaroxaban, apixaban, aspirin)
- Planned surgery (pausing at least 7 days beforehand is recommended)
- Existing blood clotting disorders
- Taking NSAIDs (ibuprofen, diclofenac) over extended periods
In these cases, speak to your doctor before starting supplementation. This advice applies especially to high amounts from 3,000 mg daily.
Frequently asked questions about omega-3 dosage
How much omega-3 per day is too much?
EFSA classifies up to 5,000 mg EPA+DHA daily as safe for adults. With blood thinners or existing conditions, however, you should consult a doctor first, as high doses can influence blood clotting. More details in the article Omega-3 overdose.
How long does it take for the Omega-3 Index to change?
The first measurable changes in the Omega-3 Index appear after 4–8 weeks of regular intake. For a stable blood level, 3–6 months of continuous intake are usually necessary. Those who wish to know their exact baseline value can have an Omega-3 Index test carried out. This is general information and not a treatment recommendation.
Can I take omega-3 without a proven deficiency?
Yes. Since the average European diet provides clearly too little EPA and DHA, supplementation is sensible for many people — even without a clinically confirmed deficiency. The base recommendation of 250 mg EPA+DHA daily applies to the entire population from adulthood. You can also check whether you might have a deficiency with the omega-3 deficiency quick test.
Do I need EPA or DHA — or both?
The authorised health claims distinguish the two fatty acids: for normal heart function EPA and DHA count together (from 250 mg EPA+DHA a day), for normal brain function and vision DHA counts (from 250 mg DHA a day). A good fish oil or algae oil supplement always contains both — in different ratios depending on the product. Why there is no authorised “optimal” ratio is explained in the article EPA to DHA ratio.
What is the maximum safe daily dose of omega-3?
EFSA determined in its Scientific Opinion that doses of up to 5,000 mg EPA+DHA daily are considered safe for adults. Higher amounts have only been used in controlled clinical studies under medical supervision. If you supplement on your own initiative, it is advisable to increase the dose gradually and monitor tolerability.
Your next step
How well supplied are you?
Questionnaires estimate, a blood test measures. Start with the free self-check and then decide whether a measurement is worth it for you.
Medical disclaimer
This article is for general information purposes only and does not replace medical advice, diagnosis or treatment. The amounts mentioned are conditions of use for health claims authorised by the European Commission or amounts investigated in scientific studies — they do not constitute intake, dosage or treatment recommendations and are not statements about the prevention, relief or cure of disease. Food supplements are not a substitute for a balanced diet. In the case of health complaints, existing conditions, during pregnancy and breastfeeding, and when taking medication (especially blood thinners), supplementation should be discussed with a doctor beforehand. The recommended daily intake must not be exceeded; EFSA considers a total intake of up to 5 g EPA+DHA per day to be safe.
Further dosage articles on overdose, the optimal time of intake and signs of deficiency can be found in the dosage overview.