Fats and oils

Flaxseed oil

Also called: linseed, alsi, flaxseed, ALA

Seed oil rich in ALA, a plant omega-3.

Why people take it
Heart, constipation (ground seeds).
What the evidence says
The body turns little ALA into EPA and DHA. Ground seeds help constipation.
How it is usually taken
Usually 1 to 2 tablespoons (or capsules) a day; ground flaxseed adds fibre too.
Be careful
Take ground seeds with water.
Medicines it can interact with
May add to blood thinners and lower sugar.

Other fats and oils

Krill oilCod liver oilAlgal oilMCT oilConjugated linoleic acidPhosphatidylserineLecithinBlack currant seed oilBorage oilOmega-7Plant sterolsPolicosanolOmega-3 for kids

Common questions

What is Flaxseed oil?

Seed oil rich in ALA, a plant omega-3.

Why do people take Flaxseed oil?

Heart, constipation (ground seeds).

Does Flaxseed oil work?

The body turns little ALA into EPA and DHA. Ground seeds help constipation.

How much Flaxseed oil do people take?

Usually 1 to 2 tablespoons (or capsules) a day; ground flaxseed adds fibre too.

Is Flaxseed oil safe?

Take ground seeds with water.

Does Flaxseed oil interact with medicines?

May add to blood thinners and lower sugar.

Sources and further reading

Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. Supplements are not medicines: they are not tested and approved like drugs before they are sold, and they can interact with medicines. Talk to your doctor or pharmacist before you start one, especially if you are pregnant or breastfeeding, take regular medicines, or have kidney, liver or heart disease.