Lortab 7.5-325mg combines hydrocodone with acetaminophen for effective relief of moderate to severe pain. Hydrocodone acts as an opioid analgesic, while acetaminophen enhances pain relief and reduces fever. This dosage provides strong symptom control but must be used cautiously due to risks of liver damage and dependence. Doctors prescribe it short-term for post-surgical pain or injuries, with close monitoring to ensure safe and effective treatment.