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Fénix Methode

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MineralsWeak evidence

Seaweed blend

Also known as: sea vegetables, kelp, bladderwrack, InSea2, alkaline blend

These are powders or extracts of several seaweeds such as kelp, bladderwrack, wakame, dulse or lithothamnion. They supply iodine and minerals; brown seaweed extracts (e.g. InSea2) are studied for blood sugar after meals. Composition varies widely, so quality depends on the label.

What it is used for

  • source of iodine and minerals – weak evidence of benefit, iodine content varies greatly
  • smaller blood sugar rise after meals (brown seaweed extract) – weak evidence from small studies
  • "alkalising" the body – no evidence

Forms and how they differ

mixed seaweed powder

iodine content often not stated

brown seaweed extract (InSea2)

polyphenols that slow carbohydrate-digesting enzymes

combinations with cinnamon and chromium

blood sugar products – quality depends on the label

When to take it

With food; blood sugar extracts just before a carbohydrate-containing meal.

Pairs well with

A diet with enough fibre and protein.

Do not combine / separate

Do not combine with other iodine sources without adding up the total; with diabetes medicines blood sugar may drop too low.

Watch out for

With thyroid disease, thyroid hormone treatment or diabetes medicines consult your doctor. Seaweed may contain arsenic and heavy metals. During pregnancy or breastfeeding, with kidney or liver disease, or when taking medicines, consult your doctor.

Safety

The EFSA tolerable upper level for iodine is 600 µg a day from all sources; iodine content in seaweed varies greatly. Do not exceed the label dose.

Practical tip

Choose blends that state iodine per serving and have heavy-metal testing.

Products containing Seaweed blend 2

Seaweed blendpowderThyroidBlood sugar & metabolismElectrolytes
Glucose support complex + Chromium + Seaweed blendblendBlood sugar & metabolismWeight & satietyThyroidElectrolytes
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 Seaweed blend with others

Which supplements do you actually need?

Fénix Methode picks them from your blood results and schedules when to take what – no needless purchases.

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From the same group

Bone support blendModerate evidenceBoronWeak evidenceCalciumModerate evidenceChromiumWeak evidenceCopperWeak evidenceElectrolytesModerate 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.