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What is pethidine used for?

Medically reviewed by Leigh Ann Anderson, PharmD. Last updated on June 20, 2025.

Official Answer by Drugs.com

Overview

In the US, meperidine is available as a brand name product and as a generic. The generic form is available commercially as an oral tablet, oral syrup, and injection (including a preservative-free injection). The brand name Demerol product is only available as an injection. The injection is given via subcutaneous, intramuscular, or intravenous (IV) administration.

According to Health Canada, meperidine is only available as a 50 mg/mL injection in that country. The brand name form Demerol is no longer listed as an available medicine in the Canadian Drug Product Database.

In some countries, this medicine may only be approved for veterinary use.

Is pethidine available in the US?

Pethidine is available in the US by the generic name of meperidine.

Because meperidine comes in multiple strengths, the US package insert contains a Boxed Warning to ensure accuracy when prescribing, dispensing, and administering Meperidine Hydrochloride Oral Solution. Dosing errors due to confusion between mg and mL, and other Meperidine Hydrochloride Oral Solutions of different concentrations, can result in accidental overdose and death.

Because it is an opioid narcotic, meperidine is associated with a risk of addiction, misuse, overdose and fatal respiratory depression. Additional Boxed Warnings include:

Learn more: View the meperidine product monograph and patient information

How does pethidine come in the United Kingdom (UK)?

Pethidine is the common (generic) name used in the UK for meperidine.

What is the chemical formula, molecular weight, and chemical names for pethidine (meperidine)?

Chemical formula:

Molecular Weight

Chemical Names

Which countries have pethidine available?

Pethidine is available in multiple countries around the world, but may be found by a different generic or brand name. Note that some medications may also be available in countries not listed or recently discontinued in that country. Always consult country-specific product labeling before use.

Countries that pethidine, meperidine, or its equivalent may be found in include:

This information is not a substitute for the expertise and judgement of your physician, pharmacist or other healthcare provider. It does not mean that the use of any medication in any country is safe, legal, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

References

See also:

Drug information

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