R 643 Pill — WHITE ROUND, 9mm — Doxazosin
| Imprint | R / 643 |
|---|---|
| Colour | WHITE |
| Shape | ROUND |
| Size | 9 |
| Strength | — |
| Dosage form | Tablet |
| Manufacturer | Actavis Elizabeth LLC |
| NDC | 0228-2643 |
| Schedule | — |
| Availability | — |
| Ingredients | — |
What does this imprint mean?
The imprint "R 643" is a code stamped or printed on the tablet or capsule by the manufacturer, used to identify the drug, its strength and the maker.
Active ingredient
Doxazosin
Uses and warnings
Drug class"Alpha1 adrenergic antagonist" - works through "selective blockade of the alpha1 (postjunctional) subtype of adrenergic receptors," decreasing urethral resistance in BPH and reducing systemic vascular resistanc...
Read the full drug profile →How to identify this pill
- • Check the imprint matches exactly: "R 643".
- • Confirm the colour (WHITE) and shape (ROUND).
- • Compare the size (9) against a ruler if possible.
- • When in doubt, confirm with a pharmacist before taking any medication.
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Official references
Source: FDA Structured Product Label via NLM Pillbox archive (retired 2021); source file AE6C88E4-C6E6-4C5F-8248-F1D01D73DAB2.xml