4 NO Pill — WHITE OVAL, 10mm — Ondansetron

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Imprint	4 / NO
Colour	WHITE
Shape	OVAL
Size	10
Strength	ONDANSETRON HYDROCHLORIDE 4 mg
Dosage form	Tablet, Film Coated
Manufacturer	Cardinal Health
NDC	55154-0328
Schedule	—
Availability	—
Ingredients	ONDANSETRON HYDROCHLORIDE[ONDANSETRON]

What does this imprint mean?

The imprint "4 NO" 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

Ondansetron

Uses and warnings

Key safety concerns include: - Hypersensitivity reactions: "Hypersensitivity reactions, including anaphylaxis and bronchospasm" may occur; discontinue if suspected - QT prolongation: Risk of serious cardiac arrhythmias; avoid in congenital long QT syndrome; ECG monitoring recommended for at-risk patients - Serotonin syndrome: Risk when combined with serotonergic drugs (SSRIs, SNRIs, tramadol, others); monitor for mental status changes and neuromuscular symptoms - Bowel obstruction masking: May mask progressive ileus and gastric distension post-surgery

Ondansetron tablets are indicated for preventing nausea and vomiting associated with: - Highly emetogenic cancer chemotherapy (including cisplatin ≥50 mg/m²) - Moderately emetogenic cancer chemotherapy courses - Radiotherapy involving total body irradiation or abdominal radiation - Postoperative nausea and/or vomiting

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How to identify this pill

• Check the imprint matches exactly: "4 NO".
• Confirm the colour (WHITE) and shape (OVAL).
• Compare the size (10) against a ruler if possible.
• When in doubt, confirm with a pharmacist before taking any medication.

4 NO Pill — WHITE OVAL, 10mm — Ondansetron

What does this imprint mean?

Active ingredient

Uses and warnings

How to identify this pill

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Official references