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Fénix Methode

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Amino acidsWeak evidence

Glycine

Also known as: L-glycine

Glycine is the simplest amino acid, a building block of collagen and glutathione and a calming neurotransmitter. It tastes slightly sweet.

What it is used for

  • Better sleep quality and less morning sleepiness – weak evidence from small studies
  • Support for collagen and glutathione production (especially with NAC) – weak evidence

Forms and how they differ

powder

cheap, sweetish, dissolves in water or tea

capsules

tasteless, several needed per dose

When to take it

For sleep about an hour before bed.

Pairs well with

Magnesium, NAC, collagen.

Do not combine / separate

Be careful with other sedating substances.

Watch out for

Caution with antipsychotics (e.g. clozapine) and sleep medication. Consult your doctor or pharmacist if you are pregnant, breastfeeding, have kidney or liver disease or take any medicines.

Safety

Do not exceed the label dose.

Practical tip

The powder can replace sugar in an evening herbal tea.

Products containing Glycine 8

GlycineSleepSkinJoints
Glycine 1000 mgfree form · 1 000 mg / capsuleSleepSkinJoints
Glycine free form 3000 mgfree form · 3 000 mg / servingSleepSkinJoints
Glycine free form 3000 mgfree form · 3 000 mg / servingSleepSkinJoints
Glycine 500 mgfree form · 500 mg / capsuleSleepSkinJoints
Glycine 975 mgfree form · 975 mg / capsuleSleepSkinJoints
Creatine + Collagen + GlycinepowderStrengthMusclesRecoveryBrain & memory
Magnesium + Glycine + L-theaninepowderSleepStressMusclesElectrolytes
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 Glycine with others

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From the same group

Acetyl-L-carnitineWeak evidenceAlmond proteinWeak evidenceAmino acid complexWeak evidenceBCAAWeak evidenceBeef proteinModerate evidenceCaseinStrong 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.