Not Medical Advice: The yellow round pill with imprint P 4 has been identified as Hydromorphone hydrochloride 4 mg (Dilaudid 4 mg).
P 4 Pill via kwout
Hydromorphone is used in the treatment of chronic pain; pain; cough; anesthetic adjunct and belongs to the drug class narcotic analgesics. The extended-release form of this medicine is for around-the-clock treatment of moderate to severe pain.
Pain is the body’s way of letting you know that something is wrong. It can appear suddenly or build slowly over time, ranging from mild and intermittent to severe and persistent. Check out some tips on how to manage your chronic pain at Healthline.com.