It works by altering the body's response to pain.

["It comes as a tablet to take by mouth, with or without food."]

Tapal 50mg Tablet ER may cause mild side effects like headaches, heartburn, stomach pain, dry mouth, tiredness, or difficulty sleeping. Consult your doctor if these persist or worsen. Seek immediate medical attention for serious side effects such as seizures, hallucinations, fever, confusion, irregular heartbeat, severe muscle reactions, breathing difficulties, chest pain, fainting, or increased pain sensitivity.