Par 021 Pill — WHITE ROUND, 8mm — Isosorbide Dinitrate
| Imprint | Par / 021 |
|---|---|
| Colour | WHITE |
| Shape | ROUND |
| Size | 8 |
| Strength | ISOSORBIDE DINITRATE 10 mg |
| Dosage form | Tablet |
| Manufacturer | McKesson Corporation dba SKY Packaging |
| NDC | 63739-569 |
| Schedule | — |
| Availability | — |
| Ingredients | ISOSORBIDE DINITRATE[ISOSORBIDE DINITRATE] |
What does this imprint mean?
The imprint "Par 021" 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
Isosorbide Dinitrate
Uses and warnings
No boxed warning. Key warnings: concomitant use with PDE5 inhibitors is dangerous because "amplification of the vasodilatory effects of isosorbide dinitrate by sildenafil can result in severe hypotension"; "severe hypotension, particularly with upright posture, may occur with even small doses"; and tolerance develops with continuous use, requiring "a daily dose-free interval to minimize the development of this tolerance."
Isosorbide dinitrate sublingual tablets are indicated for the prevention and treatment of angina pectoris due to coronary artery disease." The label notes it is not the preferred agent for acute attacks because "the onset of action of sublingual ISDN is significantly slower than that of sublingual nitroglycerin.
How to identify this pill
- • Check the imprint matches exactly: "Par 021".
- • Confirm the colour (WHITE) and shape (ROUND).
- • 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 c100dfe7-9496-49b6-9a45-2acf012f29ca.xml