Home » Orthopaedics » Hydromorphine/Dilaudid Hydromorphine/Dilaudid July 22, 2020 by Data Trace Editor - for moderate to severe pain (surgery, cancer); - Adult: PO: 1-4mg PO q6hr prn; SC/IM: 1-2mg q4-6hr prn; IV: (given slowly over 3-5min):1-2mg q4-6hr prn;; - 1.5mg IM equivalent to 10mg morphine IM