HP 4 Pill — PINK ROUND, 11mm — Hydralazine
| Imprint | HP / 4 |
|---|---|
| Colour | PINK |
| Shape | ROUND |
| Size | 11 |
| Strength | HYDRALAZINE HYDROCHLORIDE 100 mg |
| Dosage form | Tablet, Film Coated |
| Manufacturer | Major Pharmaceuticals |
| NDC | 0904-6443 |
| Schedule | — |
| Availability | — |
| Ingredients | HYDRALAZINE HYDROCHLORIDE[HYDRALAZINE] |
What does this imprint mean?
The imprint "HP 4" 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
Hydralazine
Uses and warnings
Contraindicated in patients with hypersensitivity to hydralazine, coronary artery disease, and mitral valvular rheumatic heart disease. Key warning: hydralazine "may produce a clinical picture simulating systemic lupus erythematosus including glomerulonephritis"; symptoms typically regress on discontinuation, though residual abnormalities have occasionally persisted.
Hydralazine hydrochloride tablets are indicated for the treatment of "essential hypertension, alone or as an adjunct."
How to identify this pill
- • Check the imprint matches exactly: "HP 4".
- • Confirm the colour (PINK) 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 f1f3d8c3-caac-4041-98e1-bcf15baa667d.xml