Indications
Flaxseed oil is pressed from the seeds of the flax plant (Linum usitatissimum). It is taken as a dietary supplement, usually in soft capsules, as a plant source of omega-3 fatty acid called alpha-linolenic acid (ALA). It is used to add omega-3 to the diet, especially for people who do not eat fish, and as a supportive supplement for heart health, healthy cholesterol levels and dry skin. Evidence for these benefits is limited, and it does not replace prescribed treatment for heart disease or high cholesterol.
How It Works
ALA is an essential fat, which means the body cannot make it and must get it from food. The body uses ALA to build cell membranes and turns a small part of it into the longer omega-3 fats EPA and DHA, which help regulate inflammation, blood fats and blood vessel function. Unlike whole flaxseed, the oil contains little fibre, so it has only a mild effect on bowel habits.
Dosage and Administration
Take as directed on the label, usually with meals to improve absorption and reduce stomach upset. Swallow capsules whole with water. Do not give to children unless a doctor advises it.
Interactions
Flaxseed oil may slightly increase the risk of bleeding when taken with Warfarin, Clopidogrel, Aspirin or other blood thinners. It may add to the effect of medicines that lower blood sugar or blood pressure. Tell your doctor or pharmacist about all medicines and supplements you use.
Contraindications
- Known allergy to flaxseed or linseed.
- Bleeding disorders, unless a doctor advises it.
- Within 2 weeks before planned surgery.
Side Effects
Flaxseed oil is usually well tolerated. Possible side effects include loose stools, bloating, gas, nausea and a fishy or oily aftertaste. Allergic reactions are rare.
Get urgent medical help if you notice swelling of the face, lips or throat, difficulty breathing, unusual bleeding or bruising, or black or bloody stools.
Pregnancy and Lactation
There is not enough safety information on flaxseed oil supplements in pregnancy and breastfeeding, and some experts advise caution during pregnancy. Use it only if a doctor advises it.
Precautions and Warnings
People with bleeding problems, diabetes, low blood pressure or those on several medicines should talk to a doctor first. Flaxseed oil does not provide the same amount of EPA and DHA as fish oil. Do not use the oil for frying, as heat damages it, and do not use capsules or oil that smell rancid.
Overdose
Taking much more than the label amount may cause diarrhoea, stomach cramps and, in people on blood thinners, a higher risk of bleeding. Seek medical help if symptoms are severe or bleeding occurs.
Therapeutic Class
Dietary supplement (plant omega-3 fatty acid).
Storage
Store below 30°C in a dry place, away from light and heat, and out of the reach of children. Keep the container tightly closed. Liquid oil keeps best in a refrigerator once opened.
Prepared by the Oshud Alo team from standard drug references. For information only; always follow your doctor's advice.