P 531 Pill — WHITE ROUND, 11mm — Metformin
| Imprint | P / 531 |
|---|---|
| Colour | WHITE |
| Shape | ROUND |
| Size | 11 |
| Strength | — |
| Dosage form | Tablet, Film Coated |
| Manufacturer | Provident Pharmaceutical, Inc |
| NDC | 20091-531 |
| Schedule | — |
| Availability | — |
| Ingredients | — |
What does this imprint mean?
The imprint "P 531" 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
Metformin
Uses and warnings
BOXED WARNING - LACTIC ACIDOSIS: Postmarketing cases of metformin-associated lactic acidosis have caused death, hypothermia, hypotension, and resistant bradyarrhythmias. Symptoms included malaise, myalgias, respiratory distress, somnolence, and abdominal pain. Risk factors include renal impairment, certain drug combinations, age over 65, contrast imaging procedures, surgery, hypoxic states, excessive alcohol, and hepatic impairment. If lactic acidosis is suspected, discontinue immediately and seek prompt hemodialysis. Additional Warnings: - Vitamin B12 deficiency may occur; monitor hematologic parameters annually and B12 levels every 2-3 years - Increased hypoglycemia risk when combined with insulin or insulin secretagogues - No conclusive evidence of macrovascular risk reduction
Metformin hydrochloride extended-release tablets are indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus.
How to identify this pill
- • Check the imprint matches exactly: "P 531".
- • Confirm the colour (WHITE) and shape (ROUND).
- • Compare the size (11) 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 99EB1A81-8472-4CFB-BAD8-739636AB5BEC.xml