M S4 Pill — WHITE ROUND, 6mm — Sumatriptan
| Imprint | M / S4 |
|---|---|
| Colour | WHITE |
| Shape | ROUND |
| Size | 6 |
| Strength | SUMATRIPTAN SUCCINATE 25 mg |
| Dosage form | Tablet, Film Coated |
| Manufacturer | GSMS, Incorporated |
| NDC | 51407-011 |
| Schedule | — |
| Availability | Prescription only |
| Ingredients | SUMATRIPTAN SUCCINATE[SUMATRIPTAN] |
What does this imprint mean?
The imprint "M S4" 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
Sumatriptan
Uses and warnings
No boxed warning. Contraindicated in patients with "history, symptoms, or signs of ischemic cardiac, cerebrovascular, or peripheral vascular syndromes," "uncontrolled hypertension," recent use of ergotamine-type medications within 24 hours, concurrent or recent (within 2 weeks) MAO-A inhibitor use, and hemiplegic or basilar migraine. Key warnings address risk of myocardial ischemia/infarction, Prinzmetal's angina, and other serious cardiac events even in patients without known coronary disease; cerebrovascular events such as stroke; and serotonin syndrome when combined with SSRIs or SNRIs.
"Indicated for the acute treatment of migraine with or without aura in adults." The label specifies it is "not indicated for the prevention of migraine attacks" and should not be used for "hemiplegic or basilar migraine" because efficacy has not been established and there is theoretical concern about vasospasm.
How to identify this pill
- • Check the imprint matches exactly: "M S4".
- • Confirm the colour (WHITE) and shape (ROUND).
- • Compare the size (6) 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 7911e447-5d2e-6538-e053-2991aa0a1a32.xml