Omega-3 fatty acids are a group of polyunsaturated fatty acids that are essential nutrients for human health. The three main types are alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). While ALA is found in plant sources like flaxseed and chia seeds, EPA and DHA are primarily found in fatty fish and fish oil supplements. Because the body can only convert a small amount of ALA into EPA and DHA, dietary intake of EPA and DHA, either from food or supplements, is important. Fish oil is a common dietary supplement derived from the tissues of oily fish such as salmon, mackerel, tuna, and sardines. It is rich in EPA and DHA, which are crucial components of cell membranes and play significant roles in various physiological processes, including inflammation, blood clotting, and brain function. The health benefits attributed to omega-3s, particularly EPA and DHA, have led to their widespread use as a dietary supplement (NIH ODS).
Deep dive
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Known interactions
Compound-pair rule
Caution
Fish oil has a mild blood-thinning effect that may add to warfarin.
Don't change either on your own — tell your doctor/pharmacist to monitor.
Category rule: glp1 × supplement
Note
GLP-1 medications slow stomach emptying, changing how/when oral supplements absorb; rapid weight loss raises the importance of protein and micronutrients.
Time oral supplements when nausea is lowest; prioritize protein and micronutrients; discuss with your provider.
Category rule: supplement × medication
Note
Some supplements change how the body processes medications (absorption, liver enzymes, or additive effects).
Specific pairs are checked against a licensed drug database and shown with their own severity. Always confirm with your provider or pharmacist.
Discuss with prescribing clinician; monitor for bruising, prolonged bleeding, and dose adjustments.
Frequently asked
Sources referenced
["National Institutes of Health (NIH) Office of Dietary Supplements (ODS)","MedlinePlus (U.S. National Library of Medicine)","PubChem (National Library of Medicine)","Mayo Clinic","Food and Drug Administration (FDA) product labels","Cochrane Library","Examine.com","DrugBank"]
DoseRoutine compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.
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