Hifenac Gel contains Aceclofenac 1.5% w/w, a non-steroidal anti-inflammatory drug (NSAID) indicated for the topical management of pain and inflammation associated with musculoskeletal disorders such as osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, and soft tissue rheumatism. Aceclofenac exerts its therapeutic effects by selectively inhibiting cyclooxygenase enzymes (COX-1 and COX-2), leading to a decrease in the synthesis of prostaglandins, which are mediators of inflammation and pain. The gel formulation allows for localized delivery of the active ingredient, minimizing systemic exposure and reducing the risk of systemic side effects commonly associated with oral NSAIDs. Hifenac Gel is applied topically to the affected area, typically two to three times daily, with a gentle massage until fully absorbed. It is contraindicated in patients with known hypersensitivity to aceclofenac or other NSAIDs, and caution is advised in individuals with a history of gastrointestinal ulcers, bleeding disorders, or renal impairment. Common adverse effects may include local skin reactions such as irritation, redness, or rash. Hifenac Gel should be used under medical supervision, and patients should avoid contact with eyes and mucous membranes. This topical agent offers an effective option for targeted relief of localized inflammatory pain conditions.