Nolotil (metamizole) is one of the most commonly prescribed painkillers in Spain, used to treat moderate to severe pain and high fever. However, it has been the subject of ongoing controversy, particularly among British and Irish patients living in or visiting Spain.
The concern centres around a rare but potentially life-threatening side effect called agranulocytosis, a condition that causes a severe reduction in white blood cells, leaving the body vulnerable to serious infections and sepsis. Symptoms can include fever, sore throat, mouth ulcers, chills and flu-like illness.
Over recent years, a number of British patients and families have alleged serious injuries and deaths linked to metamizole use in Spain, leading to investigations by both the Spanish Medicines Agency (AEMPS) and the European Medicines Agency (EMA).
In 2018, Spanish health authorities issued specific recommendations for healthcare professionals to exercise caution when prescribing metamizole, particularly in populations where blood monitoring may not be possible, such as tourists and temporary visitors.
It is important to note that both the AEMPS and the EMA currently maintain that the benefits of metamizole outweigh its risks when used appropriately and in accordance with prescribing guidelines. Recent studies suggest that agranulocytosis remains a very rare adverse reaction, although vigilance is essential.
If you are prescribed Nolotil in Spain and experience fever, sore throat, mouth ulcers or signs of infection, you should stop taking the medication and seek medical advice immediately.



