Pill identification — FDA label match
853 O Pill — Spironolactone 50 mg (White, Oval)
A white oval tablet with the imprint 853 O matches the FDA label for Spironolactone 50 mg. Compare every detail below with your pill, and confirm with a pharmacist before relying on it.
| Imprint | 853 O |
|---|---|
| Imprint parts | 853 · O (the code is split across the pill — often one part per side) |
| Generic name | Spironolactone |
| Active ingredient(s) | Spironolactone 50 mg |
| Strength | 50 mg |
| Dosage form | Tablet, Coated |
| Colour | White |
| Shape | Oval |
| Size | 11 mm |
| Score | Two even pieces |
| Labeler | Remedyrepack Inc. |
| NDC examples | 70518-3655-0, 70518-3655-1, 70518-3655-2, 70518-3655-3, 70518-3655-4 … (6 package codes in total) |
What this medicine is
According to its FDA-approved label, Spironolactone is described as follows (reference information only — not advice about whether it is right for anyone):
Spironolactone is an aldosterone antagonist indicated for: The treatment of NYHA Class III-IV heart failure and reduced ejection fraction to increase survival, manage edema, and to reduce the need for hospitalization for heart failure ( 1.1 ). Use as an add-on therapy for the treatment of...
Equivalent pills — same medicine, different imprint
The pills below contain the same active ingredient at the same strength (Spironolactone 50 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 853 O?
A white oval tablet with the imprint 853 O matches the FDA label for Spironolactone 50 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 853 O pill look like?
On its FDA label it is described as a white oval tablet, 11 mm, with a score recorded as: two even pieces.
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 853 O · Spironolactone — all forms & strengths · White pills · Oval pills
Source: FDA label data via DailyMed/openFDA · Label set ID b119ed8a-289a-46c5-9778-6b07e4c061c4 · Record extracted from the openFDA bulk export of October 29, 2026. Spotted an error? Report it — include the imprint and what looks wrong.