Flexibac Oral Solution is a centrally acting muscle relaxant containing baclofen at a concentration of 5 mg per 5 mL. It is used to alleviate muscle spasticity associated with conditions such as multiple sclerosis, spinal cord injuries, and other neurological disorders. Baclofen works by inhibiting the transmission of both monosynaptic and polysynaptic reflexes at the spinal cord level, leading to reduced muscle tone and spasm.