Fish oil can interact with some prescription drugs, including warfarin and other blood-thinning medications. [3] X Research source Avoid fish oil if you have a fish or shellfish allergy. If you’re concerned about your omega-3 levels, ask your doctor to recommend an alternative supplement.
Liquid fish oil in clear bottles will go bad faster. As long as they’re kept out of direct sunlight, tablets can be safely stored at room temperature.
Pregnant women should avoid vitamin A supplements and foods that contain high levels of vitamin A, such as liver pâté and liver sausage. [9] X Trustworthy Source National Health Service (UK) Public healthcare system of the UK Go to source For most people, cod liver oil is safe, but it’s essential to monitor your dosage and consult your doctor about potential drug interactions. [10] X Trustworthy Source MedlinePlus Collection of medical information sourced from the US National Library of Medicine Go to source
Many tablet forms have a shelf life of 90 days after opening. Liquid supplements typically have a shorter shelf life.
If you already get your omega-3s from a healthy diet, supplements probably won’t do much. There isn’t any evidence that it’s beneficial to consume more omega-3s than your body needs.
Wild fish typically have higher omega-3 levels than farmed fish. Fatty fish and dietary supplements are the only practical sources of the omega-3s EPA and DHA.
