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Amino acidsNo evidence

Dimethylglycine

Also known as: DMG, N,N-dimethylglycine

Dimethylglycine (DMG) is a derivative of the amino acid glycine that forms in the body when betaine is converted to methionine. It is sold for endurance, immunity and as a "methyl donor", but good human evidence is lacking.

What it is used for

  • endurance and oxygen use in sport – no reliable evidence
  • immune support – weak evidence, older small studies
  • methylation support – theoretical, no clinical evidence

Forms and how they differ

DMG tablets or capsules

usually low doses, sometimes sublingual

betaine (TMG)

a better-studied alternative for homocysteine metabolism

When to take it

With food or as the label says.

Pairs well with

Folate, vitamin B12, vitamin B6.

Do not combine / separate

No known serious interactions, but do not stack several "methylation" supplements without a reason.

Watch out for

Not suitable in pregnancy or breastfeeding due to lack of data. With chronic illness or when taking medicines, consult your doctor.

Safety

Long-term safety data are limited; do not exceed the label dose.

Practical tip

If homocysteine is your concern, betaine (TMG) and B vitamins have better evidence than DMG.

Products containing Dimethylglycine 1

Dimethylglycine 125 mgDMG · 125 mg / capsuleEnergyEnduranceImmunity
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 Dimethylglycine with others

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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.