R1 Pill: white , round
The pill with imprint R1 (White, Round1) has been identified as Tiopronin Delayed Release 100 mg and is used for Cystinuria. It belongs to the drug class miscellaneous genitourinary tract agents and is not a controlled substance.
Images for R1

Tiopronin Delayed Release
- Imprint
- R1
- Strength
- 100 mg
- Color
- White (white to off-white)
- Shape
- Round (biconvex, film-coated)
- Availability
- Prescription only
- Drug Class
- Miscellaneous genitourinary tract agents
- Pregnancy Category
- C - Risk cannot be ruled out
- CSA Schedule
- Not a controlled drug
- Labeler / Supplier
- Teva Pharmaceuticals USA, Inc.
- Manufacturer
- Watson Pharma Private Limited
- National Drug Code (NDC)
- 00480-9227
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- Drug class: miscellaneous genitourinary tract agents
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