There is a generic Dilaudid (hydromorphone) tablet made by Roxane which is very close to the description you have given.
Pill imprint 54 196 4 has been identified as Hydromorphone Hydrochloride 4 mg.
Description: Hydromorphone Hydrochloride Tablets, USP, are supplied as white to off-white, round tablets. The 4 mg tablet is debossed with "4" on one side and "54 196" on the other side.
- Dilaudid Information for Consumers
- Dilaudid Information for Healthcare Professionals (includes dosage details)
- Side Effects of Dilaudid (detailed)
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