Hydrocodone is an opioid pain reliever. Buy Hydrocodone Online, which is used to treat moderate to severe pain and cough. It is considered a weak analgesic and has excellent antitussive properties. Hydrocodone generally works in the brain to change how your body feels and responds to pain. Hydrocodone provides more excellent pain relief when combined with acetaminophen or NSAIDs than either component alone. zohydro ER and hysingla ER are two of the extended-release forms of hydrocodone.