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How Much Fish Oil Should I Take Per Day
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How Much Fish Oil Should I Take Per Day?
May 22, 2026 | 5 min read

In the US, about 10% of adults take fish oil or another type of omega-3 supplement. Fish oil is rich in omega-3 fatty acids. Dietary sources of omega-3 include fatty fish, such as sardines and mackerel, and foods like chia seeds, walnuts, and flaxseeds. Many agree on the potential benefits of these omega-3 fats: heart health, joint health, and brain function, to name a few.1 But once you've decided to add a dietary supplement to your routine, you might wonder, how much fish oil should I take?

We'll answer this question below, with dosing recommendations from research studies based on your goals, insight into whether you can take too much, and tips for when and how to take a fish oil supplement.

How Much Fish Oil Should You Take Per Day?

Recommendations for how much fish oil to take per day vary depending on your overall health, age, and whether you have any known medical conditions.

Fish Oil Daily Recommended Dosage

For the general population, which is to say, healthy adults without any known health problems—1 gram of fish oil per day is recommended, which may offer benefits without raising any risks.2

Fish Oil Dosage by Health Goal

Based on studies and research on the beneficial effects of fish oil, here are the recommendations for specific health concerns or goals:

  • General wellness – About 1 gram a day seems to be a good amount for general wellness, as it can offer benefits without raising potential health risks.2
  • Heart health and lipid and blood sugar metabolism – Consuming 3 grams of omega-3s each day from food or supplements might help overall cardiovascular function.3 Meanwhile, 2 to 4 grams daily might be recommended to support your heart health by supporting maintaining circulation and triglyceride levels already in a healthy range.4
  • Joint support – For joint support and bone health, research has suggested that low and high doses (ranging from roughly 0.5 to 4.5 grams a day) offer similar benefits.5
  • Brain health – Higher doses have been shown to offer more benefits for brain health, including maintaining cognitive health—sometimes as much as 4 to 10 grams daily.7,8

It is always recommended to use your fish oil supplement as directed on the label until you talk with your healthcare professional before making any dosing adjustments.

Why EPA and DHA Content Matter More Than Capsule Count

Fish oil provides 2 critical types of omega-3 fatty acids: EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). Both offer benefits, but certain health conditions and goals might need more of one than the other.

For example, if you're taking fish oil supplements for brain health, you might need more DHA than EPA.6 If eye support is the goal, you might need a higher concentration of EPA.8

Still, research shows that a daily dose of combined EPA and DHA is beneficial in most cases. XYMOGEN omega-3 softgels are formulated for better absorption of EPA and DHA from fish oil, and most are certified by the International Fish Oil Standards (IFOS) with a 5-star rating.

When Is the Best Time to Take Fish Oil?

You can take your fish oil supplement at any time during the day. The best time is one you can be consistent with, so you don't miss days.

Morning vs Night: Which Is Better?

Morning, afternoon, or evening works just fine—consistency is generally more important than when you take it. That said, some people prefer to take fish oil in the morning with their breakfast, at the same time they take medication or a multivitamin. Others might like to take it before bed, so they don't have "fish burps" throughout the day.

Should You Take Fish Oil With Food?

Since fish oil is absorbed through digestion, it's best to take it with food. Proper absorption helps with bioavailability—how much of a substance your body can use after ingesting it.9,10

So, consider having your omega-3 supplement with breakfast, lunch, dinner, or even a small snack, and always use as directed on the label or as instructed by your healthcare professional.

Can You Split Your Fish Oil Dose?

Since fish oil pills can be relatively big, some people split up their dose to make taking supplements easier or to minimize possible side effects. Others find it easier to take it all at once. Taking your entire daily dose at the same time could help your body absorb the nutrients and make the most of them.11

Can You Take Too Much Fish Oil?

It's possible to take too much fish oil. Very high doses of up to 15 grams a day or higher could increase the chances of experiencing side effects like upset stomach, diarrhea, or nausea. It could also lead to bleeding problems or suppress immune function.12

Who Should Talk to a Healthcare Provider First

The benefits and risks of fish oil can depend on your age, how much you take, and how long you take it. Taking about 1 gram a day can offer most people health benefits without raising other risks, but higher amounts may only benefit those with specific health concerns.2,13

Final Takeaway

Omega-3 fatty acids are essential for the body to function, but the body can't produce enough of them on its own. Adults in the US generally get very little EPA and DHA—average daily intake is only about 0.1 grams.4 For those who don't get enough through food, supplements can help.14

XYMOGEN's evidence-based formulations are third-party tested for safety, purity, and potency, so you know they're free from contaminants, contain what's on the label, and deliver optimal-strength concentrations. If you're looking to boost your omega-3 levels with high-quality, absorbable EPA and DHA, check out the fish oil supplements from XYMOGEN. Always use as directed on the label, or talk with your healthcare practitioner first before making any dosing adjustments.

References:

  1. JAMA Internal Medicine. Clinical trial evidence and use of fish oil supplements. Accessed April 21, 2026. https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/1787690
  2. Brown University Health. Fish oil supplements and heart health: what you need to know. Accessed April 21, 2026. https://www.brownhealth.org/be-well/fish-oil-supplements-and-heart-health-what-you-need-know
  3. Journal of the American Heart Association (JAHA). Omega‐3 polyunsaturated fatty acids intake and blood pressure: a dose‐response meta‐analysis of randomized controlled trials. Accessed April 21, 2026. https://www.ahajournals.org/doi/full/10.1161/JAHA.121.025071
  4. American Heart Association (AHA). Are you getting enough omega-3 fatty acids? Accessed April 21, 2026. https://www.heart.org/en/news/2023/06/30/are-you-getting-enough-omega-3-fatty-acids
  5. Clinical and Epidemiological Research. Fish oil in knee osteoarthritis: a randomised clinical trial of low dose versus high dose. Accessed April 21, 2026. https://ard.eular.org/article/S0003-4967(24)01996-4/abstract
  6. The American Journal of Clinical Nutrition. The relationship of omega-3 fatty acids with dementia and cognitive decline: evidence from prospective cohort studies of supplementation, dietary intake, and blood markers. Accessed April 21, 2026. https://www.sciencedirect.com/science/article/pii/S0002916523463204
  7. Prostaglandins Leukot Essent Fatty Acids. Omega-3 fatty acids and dementia. Accessed April 21, 2026. https://pmc.ncbi.nlm.nih.gov/articles/PMC4019002/
  8. Biomedicine Hub. The role of fish oil in inflammatory eye diseases. Accessed April 21, 2026. https://pmc.ncbi.nlm.nih.gov/articles/PMC6945974/
  9. Food Science & Nutrition. Comparison of fish and oil supplements for a better understanding of the role of fat level and other food constituents in determining bioaccessibility. Accessed April 21, 2026. https://onlinelibrary.wiley.com/doi/10.1002/fsn3.894
  10. Progress in Lipid Research. Bioavailability of EPA and DHA in humans – a comprehensive review. Accessed April 21, 2026. https://www.sciencedirect.com/science/article/pii/S0163782724000511
  11. Journal of the Academy of Nutrition and Dietetics. Enhanced absorption of omega-3 fatty acids from emulsified compared with encapsulated fish oil. Accessed April 21, 2026. https://pmc.ncbi.nlm.nih.gov/articles/PMC2701654/
  12. National Institutes of Health (NIH) Office of Dietary Supplements (ODS). Omega-3 fatty acids. Accessed April 21, 2026. https://ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthProfessional/
  13. BMJ Medicine. Regular use of fish oil supplements and course of cardiovascular diseases: prospective cohort study. Accessed April 21, 2026. https://bmjmedicine.bmj.com/content/3/1/e000451
  14. Arteriosclerosis, Thrombosis, and Vascular Biology. Omega-3 fatty acids and cardiovascular disease: new recommendations from the American Heart Association. Accessed April 21, 2026. https://www.ahajournals.org/doi/10.1161/01.atv.0000057393.97337.ae