Ace 125 mg Suppository is an analgesic and antipyretic medication manufactured by Square Pharmaceuticals Ltd., Bangladesh. Its active ingredient is Paracetamol (Acetaminophen), a widely used non-opioid analgesic and antipyretic agent. Paracetamol works by inhibiting the production of prostaglandins in the brain, thereby reducing pain and lowering fever. It is commonly used for the relief of mild to moderate pain and the reduction of fever.