4 RW Pill: yellow, round
Generic Name: hydromorphone
The pill with imprint 4 RW (Yellow, Round, 0mm) has been identified as Hydrostat IR 4 MG and is used for Chronic Pain, Pain, and Cough. It belongs to the drug class Opioids (narcotic analgesics) and is classified as CSA Schedule 2 (High potential for abuse).
Images for 4 RW


Hydrostat IR
- Generic Name
- hydromorphone
- Imprint
- 4 RW
- Strength
- 4 MG
- Color
- Yellow
- Shape
- Round
- Availability
- Prescription only
- Drug Class
- Opioids (narcotic analgesics)
- Pregnancy Category
- C - Risk cannot be ruled out
- CSA Schedule
- 2 - High potential for abuse
- Labeler / Supplier
- Shire US Inc.
- National Drug Code (NDC)
- 58521-0004 (Discontinued)
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More about Hydrostat IR (hydromorphone)
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- Dosage information
- During pregnancy
- Drug class: Opioids (narcotic analgesics)
- Breastfeeding
Patient resources
Other brands
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Professional resources
Other brands
Dilaudid, Exalgo, Dilaudid-HP, Palladone
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Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.