Pill identification — FDA label match
L 4 Pill — Nitroglycerin 0.4 mg (White, Round)
A white round tablet with the imprint L 4 matches the FDA label for Nitroglycerin 0.4 mg. Compare every detail below with your pill, and confirm with a pharmacist before relying on it.
| Imprint | L 4 |
|---|---|
| Imprint parts | L · 4 (the code is split across the pill — often one part per side) |
| Generic name | Nitroglycerin |
| Active ingredient(s) | Nitroglycerin 0.4 mg |
| Strength | 0.4 mg |
| Dosage form | Tablet |
| Colour | White |
| Shape | Round |
| Size | 5 mm |
| Score | No score |
| Labeler | Remedyrepack Inc. |
| NDC examples | 70518-4277-0, 70518-4277-1 |
What this medicine is
According to its FDA-approved label, Nitroglycerin is described as follows (reference information only — not advice about whether it is right for anyone):
Nitroglycerin sublingual tablets are indicated for the acute relief of an attack or acute prophylaxis of angina pectoris due to coronary artery disease. Nitroglycerin sublingual tablets are nitrate vasodilator indicated for relief of an attack or prophylaxis of angina pectoris due to coronary...
Equivalent pills — same medicine, different imprint
The pills below contain the same active ingredient at the same strength (Nitroglycerin 0.4 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 L 4?
A white round tablet with the imprint L 4 matches the FDA label for Nitroglycerin 0.4 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 L 4 pill look like?
On its FDA label it is described as a white round tablet, 5 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 L 4 · Nitroglycerin — all forms & strengths · White pills · Round pills
Source: FDA label data via DailyMed/openFDA · Label set ID 89da40c1-bab1-422e-b326-8ebcbdbc81f3 · Record extracted from the openFDA bulk export of October 29, 2026. Spotted an error? Report it — include the imprint and what looks wrong.