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Fénix Methode

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Omega-3 & fatsWeak evidence

Alkylglycerols

Also known as: shark liver oil, ratfish liver oil

Alkylglycerols are lipids found abundantly in shark and ratfish (chimaera) liver oil, and in small amounts in breast milk. They are sold for immune support, but human evidence is limited.

What it is used for

  • immune support – weak evidence, mainly lab data and small studies
  • support during cancer treatment – no reliable evidence, not a substitute for treatment

Forms and how they differ

ratfish liver oil

contains alkylglycerols and omega-3; purity testing matters

shark liver oil

also contains squalene; quality and origin vary

When to take it

With a meal containing fat.

Pairs well with

A balanced diet, vitamin D, omega-3.

Do not combine / separate

Take care when combining with blood thinners and other fish oils.

Watch out for

Not suitable in pregnancy or breastfeeding due to lack of data. With fish allergy, autoimmune disease, cancer treatment or when taking medicines, consult your doctor.

Safety

Do not exceed the label dose; choose products tested for heavy metals and contaminants.

Practical tip

If omega-3 is your main goal, regular quality fish oil is better studied and cheaper.

Products containing Alkylglycerols 1

Omega-3 fatty acids + Alkylglycerolsratfish liver oilHeart & vesselsBrain & memoryInflammationEyes
How to read the evidence rating
Strong evidenceModerate evidenceWeak evidenceNo evidence

Strong = several good human studies or official recommendations; moderate = promising but smaller studies; weak = few studies or mixed results; no evidence = claims not confirmed.

Combination check

Select the supplements you take and, if relevant, your medicines. We show what interferes, what needs a time gap and what to watch out for.

Check Alkylglycerols with others

Which supplements do you actually need?

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From the same group

Blackcurrant seed oilWeak evidenceBorage oilWeak evidenceCod liver oilModerate evidenceEvening primrose oilWeak evidenceFlaxseed oilWeak evidenceKrill oilModerate evidence
Important notice

This information is educational and does not replace advice from a doctor or pharmacist. We do not give medicine dosages. Supplements are no substitute for a varied diet; if pregnant, breastfeeding, ill or on medication, consult a doctor first.