Pill identification — FDA label match

M 3 Pill — Metoprolol Succinate 100 mg (White, Round)

A white round tablet with the imprint M 3 matches the FDA label for Metoprolol Succinate 100 mg. Compare every detail below with your pill, and confirm with a pharmacist before relying on it.

ImprintM 3
Imprint partsM · 3 (the code is split across the pill — often one part per side)
Brand nameMetoprolol succinate
Generic nameMetoprolol Succinate
Active ingredient(s)Metoprolol Succinate 100 mg
Strength100 mg
Dosage formTablet, Film Coated, Extended Release
ColourWhite
ShapeRound
Size11 mm
ScoreTwo even pieces
LabelerRemedyrepack Inc.
NDC examples70518-4456-0, 61786-549-02, 70518-1642-0, 70518-2080-0, 70518-2080-1

What this medicine is

According to its FDA-approved label, Metoprolol Succinate is described as follows (reference information only — not advice about whether it is right for anyone):

Metoprolol succinate extended-release tablets are a beta-adrenergic blocker indicated for the treatment of: Hypertension, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and non-fatal cardiovascular events, primarily strokes and myocardial infarctions. ( 1.1 ) Angina...

Equivalent pills — same medicine, different imprint

The pills below contain the same active ingredient at the same strength (Metoprolol Succinate 100 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.

N 100 Metoprolol Succinate 100 mg — White · round · 10 mmFull page in a later wave
P03 Metoprolol Succinate 100 mg — White · capsule · 15 mmFull page in a later wave
566 Metoprolol Succinate 100 mg — White · round · 12 mmFull page in a later wave
677 Metoprolol Succinate 100 mg — White · oval · 13 mmFull page in a later wave
832 Metoprolol Succinate 100 mg — White · round · 10 mmFull page in a later wave
A MS Metoprolol Succinate 100 mg — White · round · 10 mmFull page in a later wave
C L 408 Metoprolol Succinate 100 mg — White · round · 11 mmFull page in a later wave
I 100 Metoprolol Succinate 100 mg — White · round · 10 mmFull page in a later wave
W 736 Metoprolol Succinate 100 mg — White · round · 12 mmFull page in a later wave
YH 163 Metoprolol Succinate 100 mg — White · oval · 12 mmFull page in a later wave
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Frequently asked questions

What pill has the imprint M 3?

A white round tablet with the imprint M 3 matches the FDA label for Metoprolol Succinate 100 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 M 3 pill look like?

On its FDA label it is described as a white round 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 M 3 · Metoprolol Succinate — all forms & strengths · White pills · Round pills

Source: FDA label data via DailyMed/openFDA · Label set ID d971e541-3988-4834-baa2-236133ee106f · Record extracted from the openFDA bulk export of October 29, 2026. Spotted an error? Report it — include the imprint and what looks wrong.