M 31 Pill — WHITE ROUND, 10mm — Allopurinol
| Imprint | M / 31 |
|---|---|
| Colour | WHITE |
| Shape | ROUND |
| Size | 10 |
| Strength | ALLOPURINOL 100 mg |
| Dosage form | Tablet |
| Manufacturer | Mylan Institutional Inc. |
| NDC | 51079-205 |
| Schedule | — |
| Availability | Prescription only |
| Ingredients | ALLOPURINOL[ALLOPURINOL] |
What does this imprint mean?
The imprint "M 31" 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
Allopurinol
Uses and warnings
Drug classA xanthine oxidase inhibitor" administered orally. It reduces uric acid production by inhibiting the enzymatic conversion of hypoxanthine to xanthine and xanthine to uric acid, acting on purine catabolism "without disrup...
Read the full drug profile →How to identify this pill
- • Check the imprint matches exactly: "M 31".
- • Confirm the colour (WHITE) and shape (ROUND).
- • Compare the size (10) 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 9b9450c7-1cdf-5845-e053-2a95a90a4d4c.xml