W 421 Pill — WHITE TRIANGLE, 8mm — Amlodipine
| Imprint | W / 421 |
|---|---|
| Colour | WHITE |
| Shape | TRIANGLE |
| Size | 8 |
| Strength | AMLODIPINE BESYLATE 2.5 mg |
| Dosage form | Tablet |
| Manufacturer | Major Pharmaceuticals |
| NDC | 0904-5991 |
| Schedule | — |
| Availability | — |
| Ingredients | AMLODIPINE BESYLATE[AMLODIPINE] |
What does this imprint mean?
The imprint "W 421" 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
Amlodipine
Uses and warnings
Drug classAmlodipine besylate is a "calcium channel blocker" that functions as a "dihydropyridine calcium antagonist." It selectively inhibits calcium ion influx across cell membranes, primarily affecting vascuUsesAmlodi...
Read the full drug profile →How to identify this pill
- • Check the imprint matches exactly: "W 421".
- • Confirm the colour (WHITE) and shape (TRIANGLE).
- • Compare the size (8) 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 e17fc81d-6dda-46b8-8016-fbe13b1c0684.xml