Anadol 100 mg/2 ml Injection is a parenteral analgesic formulation containing Tramadol Hydrochloride, developed by Square Pharmaceuticals Ltd. Tramadol is a centrally acting synthetic opioid analgesic effective in managing moderate to severe pain. It functions by binding to μ-opioid receptors and inhibiting the reuptake of norepinephrine and serotonin, thereby altering the perception and response to pain.