Flexifen MR 100mg/500mg/250mg Tablet is a combination medicine that helps in relieving muscular pain. It works by blocking the release of certain chemical messengers that cause pain, inflammation, and fever. This improves the movement of muscles and provides relief from pain and discomfort. Flexifen MR 100mg/500mg/250mg Tablet can be taken with or without food. The dose and duration will depend on the severity of your condition. You should keep taking the medicine even if you feel better until the doctor says it is alright to stop using it. Using this medicine may cause common side effects such as nausea, vomiting, heartburn, stomach pain, diarrhea, and loss of appetite. If these persist or get worse, let your doctor know. In general, you should try to use the smallest amount necessary to control your symptoms. Before using the medicine, you should tell your doctor if you have any other medical conditions or disorders. To make sure it is safe, you should let your doctor know all the other medicines you are taking. Also, tell your doctor if you have any problems with the liver or kidneys. You should avoid the consumption of alcohol while on treatment with this medicine. Pregnant and breastfeeding women should consult their doctors first before using the medicine.