Fats and oils

Algal oil

Also called: algae omega-3, vegan DHA

Omega-3 (DHA, EPA) from algae.

Why people take it
Vegan source of omega-3.
What the evidence says
Raises DHA levels like fish oil.
How it is usually taken
Usually 250 mg to 2 g of DHA/EPA a day; a vegetarian source.
Be careful
Generally safe.
Medicines it can interact with
High doses may add slightly to blood thinners.

Other fats and oils

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

Common questions

What is Algal oil?

Omega-3 (DHA, EPA) from algae.

Why do people take Algal oil?

Vegan source of omega-3.

Does Algal oil work?

Raises DHA levels like fish oil.

How much Algal oil do people take?

Usually 250 mg to 2 g of DHA/EPA a day; a vegetarian source.

Is Algal oil safe?

Generally safe.

Does Algal oil interact with medicines?

High doses may add slightly to blood thinners.

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.