When to take it
With a meal containing fat.
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VitaminsModerate evidence
Vitamins ADEK
Also known as: fat-soluble vitamin complex
Vitamins ADEK combine the four fat-soluble vitamins – A, D, E and K – in one capsule. They are used mainly with fat malabsorption (e.g. cystic fibrosis, pancreatic disease or after bowel surgery), where deficiency of these vitamins is common.
What it is used for
- Prevention of vitamin A, D, E and K deficiency with fat malabsorption – moderate evidence
- Bone, immune and vision support – strong evidence for the role of each vitamin (EFSA)
- Benefit for healthy people on a varied diet – weak evidence
Forms and how they differ
ADEK complex
typically vitamin A (retinol or beta-carotene), D3, E and K1 or K2; quality and doses depend on the label
Pairs well with
With malabsorption, digestive enzymes as advised by your doctor.
Do not combine / separate
Do not combine with other vitamin A, D, E or K products – doses add up.
Watch out for
In pregnancy watch the vitamin A content. If you take warfarin-type blood thinners (vitamin K antagonists), vitamin K changes their effect – use it only after agreeing with your doctor. With other blood thinners, in pregnancy and with liver disease also consult your doctor.
Safety
Respect EFSA limits: vitamin A 3000 µg, vitamin D 100 µg (4000 IU), vitamin E 300 mg per day – from all sources combined.
Practical tip
Without malabsorption, usually a targeted vitamin D supplement in winter is enough.
Products containing Vitamins ADEK 1
Vitamins ADEK retinyl palmitate + cholecalciferol + tocopheryl acetate + K1/K2 1000 IUretinyl palmitate + cholecalciferol + tocopheryl acetate + K1/K2 · 1 000 IU / capsule
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 Vitamins ADEK with othersWhich supplements do you actually need?
Fénix Methode picks them from your blood results and schedules when to take what – no needless purchases.
From the same group
B complexModerate evidenceBeta-caroteneWeak evidenceBiotinWeak evidenceBrewer's yeastWeak evidenceCamu camuWeak evidenceCholineModerate 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.