In order to buy Dilaudid online, you have to arrange a proper prescription from an authorized healthcare provider or a doctor.This medication is used to help relieve moderate to severe pain. Dilaudid belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain. Dilaudid is made from morphine and binds to opioid receptors in the central nervous system. It is a type of opioid and a type of analgesic agent. Also called Exalgo, hydromorphone hydrochloride, and Hydrostat IR. Dilaudid is categorized into 3 parts i.e Dilaudid 2 mg, Dilaudid 4 Mg, Dilaudid 8 Mg.