The present invention generally provides a method of treatment and improvement of quality of life for patients adversely affected by various pain conditions. One preferred embodiment provides a method of treatment of acute pain, moderate to moderately severe pain, chronic pain, non-cancer pain, osteoarthritic pain, bunionectomy pain or lower back pain in a patient in need thereof, comprising providing at least one or two dosage form having about 15 mg of hydrocodone and its salt and about 500 mg of acetaminophen, once, twice or thrice daily. Preferably, the dosage form is about 30 mg of hydrocodone and about 1000 mg of acetaminophen taken twice daily. Alternatively, the dosage form is about 15 mg of hydrocodone and about 500 mg of acetaminophen taken twice daily.