The white 3 sided or triangular pill with the imprint M 8 has been identified as Hydromorphone Hydrochloride 8 mg (Dilaudid) supplied by Mallinckrodt Pharmaceuticals. Hydromorphone is used in the treatment of chronic pain; cough; pain; anesthetic adjunct and belongs to the drug class narcotic analgesics. Risk cannot be ruled out during pregnancy. Hydromorphone 8 […]