Pill identification — FDA label match
4 NO Pill — Ondansetron Hydrochloride 4 mg (White, Oval)
A white oval tablet with the imprint 4 NO matches the FDA label for Ondansetron Hydrochloride 4 mg. Compare every detail below with your pill, and confirm with a pharmacist before relying on it.
| Imprint | 4 NO |
|---|---|
| Imprint parts | 4 · NO (the code is split across the pill — often one part per side) |
| Brand name | Ondansetron |
| Generic name | Ondansetron Hydrochloride |
| Active ingredient(s) | Ondansetron Hydrochloride 4 mg |
| Strength | 4 mg |
| Dosage form | Tablet, Film Coated |
| Colour | White |
| Shape | Oval |
| Size | 10 mm |
| Score | No score |
| Labeler | Remedyrepack Inc. |
| NDC examples | 70518-0021-0, 52125-561-02, 70518-0892-0, 52125-561-10, 70518-4588-0 |
What this medicine is
According to its FDA-approved label, Ondansetron Hydrochloride is described as follows (reference information only — not advice about whether it is right for anyone):
Prevention of nausea and vomiting associated with highly emetogenic cancer chemotherapy, including cisplatin ≥ 50 mg/m 2 . Prevention of nausea and vomiting associated with initial and repeat courses of moderately emetogenic cancer chemotherapy. Prevention of nausea and vomiting associated with...
Equivalent pills — same medicine, different imprint
The pills below contain the same active ingredient at the same strength (Ondansetron Hydrochloride 4 mg). Different makers stamp their own codes, so equivalent pills often look completely different. This is factual label information — it is not a suggestion to substitute one product for another; only a pharmacist or prescriber can advise on that.
Frequently asked questions
What pill has the imprint 4 NO?
A white oval tablet with the imprint 4 NO matches the FDA label for Ondansetron Hydrochloride 4 mg. Always compare the colour, shape and size as well — short imprints are shared by different medicines — and confirm with a pharmacist.
What does the 4 NO pill look like?
On its FDA label it is described as a white oval tablet, 10 mm, with a score recorded as: no score.
How can I be sure this identification is right?
Check every characteristic — imprint (both sides), colour, shape, size and score — against the pill in your hand. If all of them agree, the pill matches the FDA label shown here, but that is still not a guarantee: counterfeit pills copy real imprints. A pharmacist can confirm the identification in person, and you should never take a pill you are not certain about.
Browse: all pills with imprint 4 NO · Ondansetron Hydrochloride — all forms & strengths · White pills · Oval pills
Source: FDA label data via DailyMed/openFDA · Label set ID 7e785778-9e52-4415-b27a-b86362b5342b · Record extracted from the openFDA bulk export of October 29, 2026. Spotted an error? Report it — include the imprint and what looks wrong.