Dietary supplement (carnitine derivative)

Acetyl-L-carnitine (acetylcarnitine) (أسيتيل كارنيتين)

Acetyl-L-carnitine is a form of carnitine, a substance the body makes and uses to produce energy in cells. It is found mostly in combination supplements for nerve health or weight loss, and the evidence that it helps is limited.

What it is used for

  • In supplements for nerve symptoms such as numbness and tingling, as in diabetic nerve damage, alongside medical treatment and not instead of it; evidence is limited
  • In some countries it is used for mild memory problems in older people; evidence is limited
  • As part of combination dietary supplements

How it is used

  • Capsules and tablets are swallowed with water; follow the leaflet and ask your pharmacist
  • It does not replace treatment for diabetes or for the cause of nerve pain prescribed by your doctor

Possible side effects

  • Nausea, stomach upset or diarrhoea
  • Trouble sleeping or feeling restless
  • An unusual body or urine odour in some people

Who should not use it

  • Do not use it if you are allergic to any ingredient in the product

Before and while using it

  • Evidence of benefit is limited, and there is no good evidence that it helps weight loss
  • Weight-loss combinations can contain stimulants such as caffeine; read the ingredients and ask your pharmacist if you have heart disease or high blood pressure
  • Ask your doctor first if you have thyroid disease or have had seizures
  • Numbness or nerve pain needs a medical check to find the cause

Medicine interactions

  • Carnitine may increase the effect of blood thinners such as warfarin; tell your doctor before using it
  • It may reduce the effect of thyroid hormone; tell your doctor if you take it

Pregnancy and breastfeeding

  • There is not enough information on its safety in pregnancy or breastfeeding; ask your doctor before using it

How to store it

  • Store in a dry place away from heat and out of the reach of children

Get medical help straight away if

  • Your face, lips or tongue swell, or you find it hard to breathe.
  • You get a severe rash, blistering or peeling skin.
  • A side effect worries you or doesn’t go away: contact your doctor or pharmacist.

Questions about this medicine?

Talk to a doctor by video, or send your question by text.

Source: Standard international medicine references

This guide is general information and doesn’t replace advice from your doctor or pharmacist. Don’t start, stop or change a medicine without asking them, and always read the leaflet in the pack.