Metamizole sodium (INN) is a painkiller drug used for the treatment of acute pain and chronic pain. It is also known as dipyrone and is a non-steroidal anti-inflammatory drug (NSAID). It works by blocking the production of certain chemicals in the body that cause inflammation and pain. Metamizole sodium is available as tablets, capsules, solution, and suppositories. It is commonly used to treat pain associated with headaches, muscle pain, toothache, and menstrual cramps. It is also used to treat fever and other symptoms of colds and flu.
Metamizole (also known as dipyrone) is a type of pain-relieving medicine used to treat mild to moderate pain and fever. It is a non-steroidal anti-inflammatory drug (NSAID) and works by blocking the production of substances in the body that cause pain and inflammation. It is available as a tablet, injection, or suppository and is usually taken up to four times a day. Metamizole is usually used for short-term management of pain, but can be taken long-term for chronic conditions such as arthritis. Common side effects of metamizole include headache, nausea, vomiting, and dizziness. Rarely, metamizole may cause serious side effects such as blood clots or liver problems, so it is important to speak with a doctor about any concerns before taking metamizole.
Metamizole sodium, also known by the brand names Dipyrone (North America, withdrawn), Analgin (Europe, Asia, South America), and others, is a medication with several key properties:
Function:
- Pain reliever: Primarily used as a pain reliever for moderate to severe pain. It works by blocking pain signals at the level of the spinal cord and brain.
- Antipyretic: Can also help reduce fever.
Availability:
- Restricted in some countries: Due to potential side effects, particularly a rare but serious blood disorder called agranulocytosis, metamizole sodium is banned or restricted in some countries, including the United States, United Kingdom, and Australia.
- Available in others: It remains commonly used in many parts of the world, including Europe, South America, and Asia.
Important Considerations:
- Serious side effect: As mentioned earlier, the most concerning side effect is agranulocytosis, which significantly reduces the body's white blood cell count, increasing the risk of infections.
- Other potential side effects: May also cause nausea, vomiting, skin rash, and low blood pressure.
- Alternatives: In countries where it's restricted, other pain relievers and antipyretics like paracetamol (acetaminophen) and ibuprofen are typically used.