Dalsy contains ibuprofen as the active substance and belongs to a group of medicines called nonsteroidal anti-inflammatory drugs (NSOs). This medicine is used in adults and adolescents over 12 years of age (weight greater than 40 kg) for symptomatic relief from mild to moderate occasional pains, such as headaches, dental, menstrual, muscle (contractures) or back (lumbago), as well as in febrile states