C89 Pill — WHITE ROUND, 7mm — Sildenafil
| Imprint | C89 |
|---|---|
| Colour | WHITE |
| Shape | ROUND |
| Size | 7 |
| Strength | SILDENAFIL CITRATE 20 mg |
| Dosage form | Tablet, Film Coated |
| Manufacturer | Preferred Pharmaceuticals, Inc. |
| NDC | 68788-6378 |
| Schedule | — |
| Availability | — |
| Ingredients | SILDENAFIL CITRATE[SILDENAFIL] |
What does this imprint mean?
The imprint "C89" 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
Sildenafil
Uses and warnings
Critical Contraindications: "Administration of VIAGRA to patients using nitric oxide donors, such as organic nitrates or organic nitrites in any form" is contraindicated due to severe hypotensive effects. Cannot be used with guanylate cyclase stimulators like riociguat. Contraindicated in patients with known hypersensitivity to sildenafil. Major Warnings: Vision Loss - "Stop use of all PDE5 inhibitors...and seek medical attention in the event of a sudden loss of vision" (risk of NAION). Priapism - erection persisting longer than 4 hours requires immediate medical attention. Hearing Loss - sudden decrease or loss of hearing reported post-marketing. Cardiovascular Risk - sexual activity may pose cardiac risk in patients with preexisting cardiovascular disease.
"VIAGRA is indicated for the treatment of erectile dysfunction." A phosphodiesterase-5 (PDE5) inhibitor used to help men achieve and maintain erections during sexual activity.
How to identify this pill
- • Check the imprint matches exactly: "C89".
- • Confirm the colour (WHITE) and shape (ROUND).
- • Compare the size (7) 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 8ce36ae9-b351-4fb8-80cc-305eb33d8209.xml