Pill identification — FDA label match
LU M73 Pill — Doxycycline 100 mg (Brown, Capsule)
A brown capsule with the imprint LU M73 matches the FDA label for Doxycycline 100 mg. Compare every detail below with your pill, and confirm with a pharmacist before relying on it.
| Imprint | LU M73 |
|---|---|
| Imprint parts | LU · M73 (the code is split across the pill — often one part per side) |
| Generic name | Doxycycline |
| Active ingredient(s) | Doxycycline 100 mg |
| Strength | 100 mg |
| Dosage form | Capsule |
| Colour | Brown |
| Shape | Capsule |
| Size | 20 mm |
| Score | No score |
| Labeler | Remedyrepack Inc. |
| NDC examples | 70518-0213-0, 70518-0213-1, 70518-0213-2, 70518-0213-3, 70518-0213-4 … (17 package codes in total) |
What this medicine is
According to its FDA-approved label, Doxycycline is described as follows (reference information only — not advice about whether it is right for anyone):
To reduce the development of drug-resistant bacteria and maintain effectiveness of doxycycline capsules and other antibacterial drugs, doxycycline capsules should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and...
Equivalent pills — same medicine, different imprint
The pills below contain the same active ingredient at the same strength (Doxycycline 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.
Frequently asked questions
What pill has the imprint LU M73?
A brown capsule with the imprint LU M73 matches the FDA label for Doxycycline 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 LU M73 pill look like?
On its FDA label it is described as a brown capsule, 20 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 LU M73 · Doxycycline — all forms & strengths · Brown pills · Capsule pills
Source: FDA label data via DailyMed/openFDA · Label set ID fa2d9328-b688-47af-8c4d-dc328cf35392 · Record extracted from the openFDA bulk export of October 29, 2026. Spotted an error? Report it — include the imprint and what looks wrong.