Pill identification — FDA label match
NA 40 Pill — Nadolol 40 mg (Blue, Round)
A blue round tablet with the imprint NA 40 matches the FDA label for Nadolol 40 mg. Compare every detail below with your pill, and confirm with a pharmacist before relying on it.
| Imprint | NA 40 |
|---|---|
| Imprint parts | NA · 40 (the code is split across the pill — often one part per side) |
| Generic name | Nadolol |
| Active ingredient(s) | Nadolol 40 mg |
| Strength | 40 mg |
| Dosage form | Tablet |
| Colour | Blue |
| Shape | Round |
| Size | 9 mm |
| Score | Two even pieces |
| Labeler | Remedyrepack Inc. |
| NDC examples | 70518-4662-0, 70518-4662-1 |
What this medicine is
According to its FDA-approved label, Nadolol is described as follows (reference information only — not advice about whether it is right for anyone):
Angina Pectoris Nadolol tablets are indicated for the long-term management of patients with angina pectoris. Hypertension Nadolol tablets are indicated for the treatment of hypertension, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events,...
Equivalent pills — same medicine, different imprint
The pills below contain the same active ingredient at the same strength (Nadolol 40 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 NA 40?
A blue round tablet with the imprint NA 40 matches the FDA label for Nadolol 40 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 NA 40 pill look like?
On its FDA label it is described as a blue round tablet, 9 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 NA 40 · Nadolol — all forms & strengths · Blue pills · Round pills
Source: FDA label data via DailyMed/openFDA · Label set ID 8a224f90-24a5-411e-ac26-6496a1930f3a · Record extracted from the openFDA bulk export of October 29, 2026. Spotted an error? Report it — include the imprint and what looks wrong.