Ingredients A-Z

Fish Oil

Overview

Fish oil is rich in omega-3 fatty acids, particularly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which are derived from fatty fish such as salmon and mackerel. These active forms of omega-3s support heart, brain, joint, and eye health. Available as liquids, capsules, or gummies, fish oil provides a convenient way to boost essential fat intake.

 

Fish oil is rich in omega-3 fatty acids, particularly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which are derived from fatty fish such as salmon and mackerel. These active forms of omega-3s support heart, brain, joint, and eye health. Available as liquids, capsules, or gummies, fish oil provides a convenient way to boost essential fat intake.

 

Omega-3 needs vary based on age, gender, and health. For instance, individuals with heart conditions may require higher amounts. It’s best to consult a healthcare provider for the appropriate dosage, as excessive intake can cause side effects.

Key indications

High Triglycerides (Hypertriglyceridemia)

The FDA has approved prescription omega-3 fatty acid medications specifically for treating triglyceride levels above 500mg/dL. According to published research, a daily dose of 4g of prescription omega-3 can reduce triglyceride levels by 20% to 30% in most individuals¹,².

Coronary Heart Disease (CHD)

Higher dietary intake and elevated blood levels of alpha-linolenic acid (ALA), EPA, and DHA are linked to a lower occurrence of atherosclerotic plaque, and slower progression of plaque buildup³,⁴. Study suggests taking EPA or DHA supplements after an acute coronary syndrome or in high doses can reduce the risk of heart disease and mortality⁵.

Chronic Kidney Problem

Omega-3 PUFAs are showed reduce the risk of chronic kidney disease (CKD) and help in support kidney function⁶,⁷. Study also showed long-term supplementation with 400mg/day of EPA-DHA may help improve kidney function in patients with history of myocardial infarction⁸.

Inflammatory Conditions

Fish oil reduce inflammation by increasing “mediators” that regulate blood components⁹,¹⁰. A research in rheumatoid arthritis typically uses 1.5–7g of EPA + DHA daily (about 3.5g on average) over a period of 3–12 months may help slow the progression of arthritis and reduce its severity¹¹. Study also found that omega-3 and vitamin E supplements reduce menstrual pain, with the combination providing the most relief, offering a safer alternative to NSAIDs¹².

High Triglycerides (Hypertriglyceridemia)

The FDA has approved prescription omega-3 fatty acid medications specifically for treating triglyceride levels above 500mg/dL. According to published research, a daily dose of 4g of prescription omega-3 can reduce triglyceride levels by 20% to 30% in most individuals¹,².

Coronary Heart Disease (CHD)

Higher dietary intake and elevated blood levels of alpha-linolenic acid (ALA), EPA, and DHA are linked to a lower occurrence of atherosclerotic plaque, and slower progression of plaque buildup³,⁴. Study suggests taking EPA or DHA supplements after an acute coronary syndrome or in high doses can reduce the risk of heart disease and mortality⁵.

Chronic Kidney Problem

Omega-3 PUFAs are showed reduce the risk of chronic kidney disease (CKD) and help in support kidney function⁶,⁷. Study also showed long-term supplementation with 400mg/day of EPA-DHA may help improve kidney function in patients with history of myocardial infarction⁸.

Inflammatory Conditions

Fish oil reduce inflammation by increasing “mediators” that regulate blood components⁹,¹⁰. A research in rheumatoid arthritis typically uses 1.5–7g of EPA + DHA daily (about 3.5g on average) over a period of 3–12 months may help slow the progression of arthritis and reduce its severity¹¹. Study also found that omega-3 and vitamin E supplements reduce menstrual pain, with the combination providing the most relief, offering a safer alternative to NSAIDs¹².

Fatty Liver (Non-alcoholic Fatty Liver Disease)

Studies suggest that omega-3 fatty acids in fish oil help reduce liver fat, improve liver function, and lower liver inflammation¹³,¹⁴. For instance, a systematic review and meta-analysis found that omega-3 supplementation improved liver fat content in NAFLD patients¹³.

Involuntary weight loss (eg. cachexia, wasting syndrome)

A high-dose fish oil supplementation may help slow involuntary weight loss in cancer patients experiencing involuntary weight loss¹⁴,¹⁵. Research indicates that doses exceeding 2g per day of eicosapentaenoic acid (EPA), a type of omega-3 fatty acid found in fish oil, can stabilize weight loss and reduce lean tissue wasting in these patients¹⁴. EPA supplementation reversed a median weight loss of 2kg/month to a stable weight gain of 0.5kg after four weeks, maintained over 12 weeks¹⁵.

Adverse effects

Fish oil supplements are generally safe when taken as recommended (up to 3g daily). May have mild adverse effects like nausea, bad breath, or a fishy aftertaste, which can be reduced by taking them with meals. High doses of omega-3 PUFAs may impair platelet function, potentially raising the risk of bleeding and haemorrhagic stroke ⁶.

Dosage range

There isn’t a specific recommendation for the exact amount of fish oil to take. However, guidelines exist for total omega-3 intake, including EPA and DHA. The recommended general daily intake (RDI) for combined EPA and DHA is 250–500mg¹⁸.

 

  1. High Triglycerides (Hypertriglyceridemia)
    Prescription omega-3 at a dose of 4g per day is an effective treatment for lowering very high triglycerides, either as a standalone option or in combination with other lipid-lowering medications1. The American Heart Association (AHA) also advises taking 4g of prescription omega-3 per day to reduce very high triglyceride levels.
  2.  

  3. Coronary Heart Disease (CHD)
    It is recommended that individuals with coronary heart disease or those at risk of a heart attack consume up to 1,000mg of total EPA and DHA per day⁵.
  4.  

  5. Chronic Kidney Problem
    The American Heart Association (AHA) suggests taking about 1g of omega-3 (EPA + DHA) daily for advanced CKD¹⁹.
  6.  

  7. Inflammatory Conditions
    Research in healthy individuals suggests that more than 2g of EPA + DHA per day is needed to affect
    inflammatory processes²⁰.
  8.  

  9. Fatty Liver (Non-alcoholic Fatty Liver Disease)
    A review found that both 5g and 2g daily doses of omega-3 PUFA reduced steatosis grade over 6 months¹⁴.
  10.  

  11. Involuntary weight loss (eg. cachexia, wasting syndrome)
    Research shows that doses over 2g of EPA from fish oil stabilise weight loss and reduce lean tissue wasting in cancer patients¹⁵.

Contraindications/cautions

Avoid it if you’re allergic to fish or shellfish.

 

Potential interactions with drugs¹⁷:

 

Blood thinners: Fish oil may increase bleeding risk when combined with anticoagulants, antiplatelets, or similar herbs and supplements.

 

Anti-hypertensive medications: It might enhance the blood pressure-lowering effects of these drugs.

 

Contraceptives: Some contraceptives may reduce fish oil’s triglyceride-lowering benefits.

 

Orlistat: This weight-loss drug may decrease omega-3 absorption; take fish oil 2 hours apart.

Adverse effects

Fish oil supplements are generally safe when taken as recommended (up to 3g daily). May have mild adverse effects like nausea, bad breath, or a fishy aftertaste, which can be reduced by taking them with meals. High doses of omega-3 PUFAs may impair platelet function, potentially raising the risk of bleeding and haemorrhagic stroke ⁶.

Dosage range

There isn’t a specific recommendation for the exact amount of fish oil to take. However, guidelines exist for total omega-3 intake, including EPA and DHA. The recommended general daily intake (RDI) for combined EPA and DHA is 250–500mg¹⁸.

 

  1. High Triglycerides (Hypertriglyceridemia)
    Prescription omega-3 at a dose of 4g per day is an effective treatment for lowering very high triglycerides, either as a standalone option or in combination with other lipid-lowering medications1. The American Heart Association (AHA) also advises taking 4g of prescription omega-3 per day to reduce very high triglyceride levels.
  2.  

  3. Coronary Heart Disease (CHD)
    It is recommended that individuals with coronary heart disease or those at risk of a heart attack consume up to 1,000mg of total EPA and DHA per day⁵.
  4.  

  5. Chronic Kidney Problem
    The American Heart Association (AHA) suggests taking about 1g of omega-3 (EPA + DHA) daily for advanced CKD¹⁹.
  6.  

  7. Inflammatory Conditions
    Research in healthy individuals suggests that more than 2g of EPA + DHA per day is needed to affect
    inflammatory processes²⁰.
  8.  

  9. Fatty Liver (Non-alcoholic Fatty Liver Disease)
    A review found that both 5g and 2g daily doses of omega-3 PUFA reduced steatosis grade over 6 months¹⁴.
  10.  

  11. Involuntary weight loss (eg. cachexia, wasting syndrome)
    Research shows that doses over 2g of EPA from fish oil stabilise weight loss and reduce lean tissue wasting in cancer patients¹⁵.

Contraindications/cautions

Avoid it if you’re allergic to fish or shellfish.

 

Potential interactions with drugs¹⁷:

 

Blood thinners: Fish oil may increase bleeding risk when combined with anticoagulants, antiplatelets, or similar herbs and supplements.

 

Anti-hypertensive medications: It might enhance the blood pressure-lowering effects of these drugs.

 

Contraceptives: Some contraceptives may reduce fish oil’s triglyceride-lowering benefits.

 

Orlistat: This weight-loss drug may decrease omega-3 absorption; take fish oil 2 hours apart.

References :

  1. Skulas-Ray, A. C., Wilson, P. W., Harris, W. S., Brinton, E. A., Kris-Etherton, P. M., Richter, C. K., … & Welty, F. K. (2019). Omega-3 fatty acids for the management of hypertriglyceridemia: a science advisory from the American Heart Association. Circulation, 140(12), e673-e691.
  2. Tatsuno, I., Saito, Y., Kudou, K., & Ootake, J. (2013). Efficacy and safety of TAK-085 compared with eicosapentaenoic acid in Japanese subjects with hypertriglyceridemia undergoing lifestyle modification: the omega-3 fatty acids randomized double-blind (ORD) study. Journal of clinical lipidology, 7(3), 199-207.
  3. Hino, A., Adachi, H., Toyomasu, K., Yoshida, N., Enomoto, M., Hiratsuka, A., … & Imaizumi, T. (2004). Very long chain N-3 fatty acids intake and carotid atherosclerosis: an epidemiological study evaluated by ultrasonography. Atherosclerosis, 176(1), 145-149.
  4. DiNicolantonio, J. J., & O’Keefe, J. H. (2020). The Benefits of Omega-3 Fats for Stabilizing and Remodeling Atherosclerosis. Missouri medicine, 117(1), 65–69.
  5. DiNicolantonio, J. J., Niazi, A. K., McCarty, M. F., O’Keefe, J. H., Meier, P., & Lavie, C. J. (2014). Omega-3s and cardiovascular health. Ochsner Journal, 14(3), 399-412.
  6. Ong, K. L., Marklund, M., Huang, L., Rye, K. A., Hui, N., Pan, X. F., … & Wu, J. H. (2023). Association of omega 3 polyunsaturated fatty acids with incident chronic kidney disease: pooled analysis of 19 cohorts. bmj, 380.
  7. Liu, M., Ye, Z., Yang, S., Zhang, Y., Wu, Q., Zhou, C., … & Qin, X. (2022). Habitual fish oil supplementation and incident chronic kidney disease in the UK Biobank. Nutrients, 15(1), 22.
  8. Hoogeveen, E. K., Geleijnse, J. M., Kromhout, D., Stijnen, T., Gemen, E. F., Kusters, R., & Giltay, E. J. (2014). Effect of omega-3 fatty acids on kidney function after myocardial infarction: the Alpha Omega Trial. Clinical Journal of the American Society of Nephrology, 9(10), 1676-1683.
  9. Souza, P. R., Marques, R. M., Gomez, E. A., Colas, R. A., De Matteis, R., Zak, A., … & Dalli, J. (2020). Enriched marine oil supplements increase peripheral blood specialized pro-resolving mediators concentrations and reprogram host immune responses: a randomized double-blind placebo-controlled study. Circulation research, 126(1), 75-90.
  10. Ellulu, M. S., Khaza’ai, H., Abed, Y., Rahmat, A., Ismail, P., & Ranneh, Y. (2015). Role of fish oil in human health and possible mechanism to reduce the inflammation. Inflammopharmacology, 23, 79-89.
  11. Calder, P. C. (2008). PUFA, inflammatory processes and rheumatoid arthritis. Proc Nutr Soc, 67, 409-418.
  12. Sadeghi, N., Paknezhad, F., Rashidi Nooshabadi, M., Kavianpour, M., Jafari Rad, S., & Khadem Haghighian, H. (2018). Vitamin E and fish oil, separately or in combination, on treatment of primary dysmenorrhea: a double-blind, randomized clinical trial. Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology, 34(9), 804–808. https://doi.org/10.1080/09513590.2018.1450377
  13. Parker, H. M., Johnson, N. A., Burdon, C. A., Cohn, J. S., O’Connor, H. T., & George, J. (2012). Omega-3 supplementation and non-alcoholic fatty liver disease: a systematic review and meta-analysis. Journal of hepatology, 56(4), 944-951.
  14. Murphy, R. A., Mourtzakis, M., Chu, Q. S., Baracos, V. E., Reiman, T., & Mazurak, V. C. (2011). Nutritional intervention with fish oil provides a benefit over standard of care for weight and skeletal muscle mass in patients with nonsmall cell lung cancer receiving chemotherapy. Cancer, 117(8), 1775-1782.
  15. Wigmore, S. J., Barber, M. D., Ross, J. A., Tisdale, M. J., & Fearon, K. C. (2000). Effect of oral eicosapentaenoic acid on weight loss in patients with pancreatic cancer. Nutrition and cancer, 36(2), 177-184.
  16. O’Keefe, J. H., Tintle, N. L., Harris, W. S., O’Keefe, E. L., Sala-Vila, A., Attia, J., … & Mozaffarian, D. (2024). Omega-3 blood levels and stroke risk: a pooled and harmonized analysis of 183 291 participants from 29 prospective studies. Stroke, 55(1), 50-58.
  17. Mayo Foundation for Medical Education and Research. (2023, August 10). Fish oil. Mayo Clinic. https://www.mayoclinic.org/drugs-supplements-fish-oil/art-20364810
  18. EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA). (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.
  19. Panahi, Y., Dashti-Khavidaki, S., Farnood, F., Noshad, H., Lotfi, M., & Gharekhani, A. (2016). Therapeutic Effects of Omega-3 Fatty Acids on Chronic Kidney Disease-Associated Pruritus: a Literature Review. Advanced pharmaceutical bulletin, 6(4), 509–514. https://doi.org/10.15171/apb.2016.064
  20. Calder P. C. (2010). Omega-3 fatty acids and inflammatory processes. Nutrients, 2(3), 355–374. https://doi.org/10.3390/nu2030355

References :

  1. Skulas-Ray, A. C., Wilson, P. W., Harris, W. S., Brinton, E. A., Kris-Etherton, P. M., Richter, C. K., … & Welty, F. K. (2019). Omega-3 fatty acids for the management of hypertriglyceridemia: a science advisory from the American Heart Association. Circulation, 140(12), e673-e691.
  2. Tatsuno, I., Saito, Y., Kudou, K., & Ootake, J. (2013). Efficacy and safety of TAK-085 compared with eicosapentaenoic acid in Japanese subjects with hypertriglyceridemia undergoing lifestyle modification: the omega-3 fatty acids randomized double-blind (ORD) study. Journal of clinical lipidology, 7(3), 199-207.
  3. Hino, A., Adachi, H., Toyomasu, K., Yoshida, N., Enomoto, M., Hiratsuka, A., … & Imaizumi, T. (2004). Very long chain N-3 fatty acids intake and carotid atherosclerosis: an epidemiological study evaluated by ultrasonography. Atherosclerosis, 176(1), 145-149.
  4. DiNicolantonio, J. J., & O’Keefe, J. H. (2020). The Benefits of Omega-3 Fats for Stabilizing and Remodeling Atherosclerosis. Missouri medicine, 117(1), 65–69.
  5. DiNicolantonio, J. J., Niazi, A. K., McCarty, M. F., O’Keefe, J. H., Meier, P., & Lavie, C. J. (2014). Omega-3s and cardiovascular health. Ochsner Journal, 14(3), 399-412.
  6. Ong, K. L., Marklund, M., Huang, L., Rye, K. A., Hui, N., Pan, X. F., … & Wu, J. H. (2023). Association of omega 3 polyunsaturated fatty acids with incident chronic kidney disease: pooled analysis of 19 cohorts. bmj, 380.
  7. Liu, M., Ye, Z., Yang, S., Zhang, Y., Wu, Q., Zhou, C., … & Qin, X. (2022). Habitual fish oil supplementation and incident chronic kidney disease in the UK Biobank. Nutrients, 15(1), 22.
  8. Hoogeveen, E. K., Geleijnse, J. M., Kromhout, D., Stijnen, T., Gemen, E. F., Kusters, R., & Giltay, E. J. (2014). Effect of omega-3 fatty acids on kidney function after myocardial infarction: the Alpha Omega Trial. Clinical Journal of the American Society of Nephrology, 9(10), 1676-1683.
  9. Souza, P. R., Marques, R. M., Gomez, E. A., Colas, R. A., De Matteis, R., Zak, A., … & Dalli, J. (2020). Enriched marine oil supplements increase peripheral blood specialized pro-resolving mediators concentrations and reprogram host immune responses: a randomized double-blind placebo-controlled study. Circulation research, 126(1), 75-90.
  10. Ellulu, M. S., Khaza’ai, H., Abed, Y., Rahmat, A., Ismail, P., & Ranneh, Y. (2015). Role of fish oil in human health and possible mechanism to reduce the inflammation. Inflammopharmacology, 23, 79-89.
  11. Calder, P. C. (2008). PUFA, inflammatory processes and rheumatoid arthritis. Proc Nutr Soc, 67, 409-418.
  12. Sadeghi, N., Paknezhad, F., Rashidi Nooshabadi, M., Kavianpour, M., Jafari Rad, S., & Khadem Haghighian, H. (2018). Vitamin E and fish oil, separately or in combination, on treatment of primary dysmenorrhea: a double-blind, randomized clinical trial. Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology, 34(9), 804–808. https://doi.org/10.1080/09513590.2018.1450377
  13. Parker, H. M., Johnson, N. A., Burdon, C. A., Cohn, J. S., O’Connor, H. T., & George, J. (2012). Omega-3 supplementation and non-alcoholic fatty liver disease: a systematic review and meta-analysis. Journal of hepatology, 56(4), 944-951.
  14. Murphy, R. A., Mourtzakis, M., Chu, Q. S., Baracos, V. E., Reiman, T., & Mazurak, V. C. (2011). Nutritional intervention with fish oil provides a benefit over standard of care for weight and skeletal muscle mass in patients with nonsmall cell lung cancer receiving chemotherapy. Cancer, 117(8), 1775-1782.
  15. Wigmore, S. J., Barber, M. D., Ross, J. A., Tisdale, M. J., & Fearon, K. C. (2000). Effect of oral eicosapentaenoic acid on weight loss in patients with pancreatic cancer. Nutrition and cancer, 36(2), 177-184.
  16. O’Keefe, J. H., Tintle, N. L., Harris, W. S., O’Keefe, E. L., Sala-Vila, A., Attia, J., … & Mozaffarian, D. (2024). Omega-3 blood levels and stroke risk: a pooled and harmonized analysis of 183 291 participants from 29 prospective studies. Stroke, 55(1), 50-58.
  17. Mayo Foundation for Medical Education and Research. (2023, August 10). Fish oil. Mayo Clinic. https://www.mayoclinic.org/drugs-supplements-fish-oil/art-20364810
  18. EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA). (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.
  19. Panahi, Y., Dashti-Khavidaki, S., Farnood, F., Noshad, H., Lotfi, M., & Gharekhani, A. (2016). Therapeutic Effects of Omega-3 Fatty Acids on Chronic Kidney Disease-Associated Pruritus: a Literature Review. Advanced pharmaceutical bulletin, 6(4), 509–514. https://doi.org/10.15171/apb.2016.064
  20. Calder P. C. (2010). Omega-3 fatty acids and inflammatory processes. Nutrients, 2(3), 355–374. https://doi.org/10.3390/nu2030355

The material is prepared for informational purposes only and should not be construed as a piece of personal medical advice. Owing to each person’s varying health needs, a physician should be consulted before acting on any information provided in this material. Although every effort is made to ensure that this material is accurate, it is compiled for internal use only and should not be considered definitive. Neither VitaHealth nor its employees, or information providers shall be responsible or liable for any errors, inaccuracies, or other defects in the information contained in this publication.

You might also be interested in

Fish Oil

Fish oil is rich in omega-3 fatty acids, particularly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which are derived from fatty fish such as salmon

READ MORE

Eyebright Extract

Eyebright extract (Euphrasia officinalis) is a unique and highly beneficial herbal extract, revered for its traditional use in treating eye conditions and its broad range

READ MORE

Evening Primrose Oil

Evening primrose, Oenothera biennis was first grown by North American Indians², is a plant native to North and South America grows throughout Europe and some

READ MORE
My Cart
Close Wishlist
Close Recently Viewed
Categories