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Fénix Methode

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PerformanceWeak evidence

D-aspartic acid

Also known as: DAA, D-aspartate

D-aspartic acid is an amino acid involved in hormonal signalling in the body. It is sold to support testosterone, but study results are inconsistent.

What it is used for

  • Testosterone in untrained men – weak, short-term evidence
  • Testosterone and strength in trained men – no or conflicting evidence
  • Sperm quality – weak evidence

Forms and how they differ

D-aspartic acid (powder)

pure form, usually in gram doses

sodium D-aspartate

also provides sodium; similar effect

When to take it

Usually once a day, e.g. in the morning; often taken in cycles of a few weeks.

Pairs well with

Often combined with zinc, magnesium and vitamin D.

Do not combine / separate

Do not combine with other testosterone boosters without consulting your doctor.

Watch out for

Not suitable in pregnancy, breastfeeding or for adolescents. If you have a hormonal condition, kidney or liver disease or take medicines, consult your doctor.

Safety

Long-term safety is not well studied. Do not exceed the label dose.

Practical tip

If low testosterone is your concern, start with blood tests, sleep, diet and exercise – the supplement has only small potential.

Products containing D-aspartic acid 3

D-aspartic acid free form 2200 mgfree form · 2 200 mg / servingHormonesMen’s healthFertilityLibido
D-aspartic acidHormonesMen’s healthFertilityLibido
D-aspartic acid 750 mgfree form · 750 mg / capsuleHormonesMen’s healthFertilityLibido
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 D-aspartic acid with others

Which supplements do you actually need?

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From the same group

AmylopectinModerate evidenceBeta-alanineStrong evidenceBHB ketonesWeak evidenceCaffeineStrong evidenceCreatineStrong evidenceDamianaWeak 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.