Pill identification — FDA label match
G L 03 Pill — Isoniazid 300 mg (White, Oval)
A white oval tablet with the imprint G L 03 matches the FDA label for Isoniazid 300 mg. Compare every detail below with your pill, and confirm with a pharmacist before relying on it.
| Imprint | G L 03 |
|---|---|
| Imprint parts | G · L · 03 (the code is split across the pill — often one part per side) |
| Generic name | Isoniazid |
| Active ingredient(s) | Isoniazid 300 mg |
| Strength | 300 mg |
| Dosage form | Tablet |
| Colour | White |
| Shape | Oval |
| Size | 18 mm |
| Score | Two even pieces |
| Labeler | Remedyrepack Inc. |
| NDC examples | 70518-4315-0, 70518-4315-1, 70518-4315-2 |
What this medicine is
According to its FDA-approved label, Isoniazid is described as follows (reference information only — not advice about whether it is right for anyone):
Isoniazid tablets, USP are recommended for all forms of tuberculosis in which organisms are susceptible. However, active tuberculosis must be treated with multiple concomitant anti-tuberculosis medications to prevent the emergence of drug resistance. Single-drug treatment of active tuberculosis...
Equivalent pills — same medicine, different imprint
The pills below contain the same active ingredient at the same strength (Isoniazid 300 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 G L 03?
A white oval tablet with the imprint G L 03 matches the FDA label for Isoniazid 300 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 G L 03 pill look like?
On its FDA label it is described as a white oval tablet, 18 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 G L 03 · Isoniazid — all forms & strengths · White pills · Oval pills
Source: FDA label data via DailyMed/openFDA · Label set ID 6dab7b7b-a3a9-47ef-b423-134bc6970d8b · Record extracted from the openFDA bulk export of October 29, 2026. Spotted an error? Report it — include the imprint and what looks wrong.