Individuals can seek information about the dangers of flaxseed oil through online information services such as Mayo Clinic and MedlinePlus. Flaxseed oil has a reputation as a safe supplement in moderate doses, but some individuals may experience extremely severe allergic reactions, reports Mayo Clinic.
Allergic reactions to flaxseed oil can include symptoms such as itchiness, hives, nausea, diarrhea and vomiting. Anaphylaxis is also possible, claims Mayo Clinic. Individuals who have allergies to flaxseed or any other members of the Linaceae plant family should avoid all flaxseed products.
Flaxseed oil may lower blood pressure. Individuals who are taking drugs or supplements that lower blood pressure must practice caution in using flaxseed oil, as it may cause their blood pressure to go too low, advises MedlinePlus. Flaxseed oil may also slow blood clotting and elevate the risk of bleeding. Individuals who are taking drugs or supplements that slow blood clotting must practice caution in using flaxseed oil, as it may cause them to bruise and bleed easily.
Flaxseed oil is possibly unsafe to ingest during pregnancy, reports MedlinePlus. As of 2015, results of studies are mixed, with some research suggesting that flaxseed oil can increase the chance of premature birth when a pregnant woman uses it during the second or third trimesters, while other research suggests that it might be safe. Until there is more certainty regarding the safety of flaxseed oil consumption during pregnancy, pregnant women should avoid taking flaxseed oil.