Mervan SR 200 mg is a sustained-release formulation of Aceclofenac, a non-steroidal anti-inflammatory drug (NSAID) known for its potent anti-inflammatory and analgesic properties. It works by inhibiting the enzyme cyclooxygenase (COX), which is involved in the synthesis of prostaglandins—chemicals responsible for pain, inflammation, and swelling. The sustained-release design ensures prolonged therapeutic effects, allowing for once-daily dosing and improved patient compliance.