Pill identification — FDA label match

U 6 H Pill — Allopurinol 300 mg (White, Round)

A white round tablet with the imprint U 6 H matches the FDA label for Allopurinol 300 mg. Compare every detail below with your pill, and confirm with a pharmacist before relying on it.

Imprint	U 6 H
Imprint parts	U · 6 · H (the code is split across the pill — often one part per side)
Generic name	Allopurinol
Active ingredient(s)	Allopurinol 300 mg
Strength	300 mg
Dosage form	Tablet
Colour	White
Shape	Round
Size	11 mm
Score	Two even pieces
Labeler	Remedyrepack Inc.
NDC examples	70518-4404-0, 70518-4404-1

What this medicine is

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

Allopurinol tablets are indicated for: • The management of adults with signs and symptoms of primary or secondary gout (acute attacks, tophi, joint destruction, uric acid lithiasis, and/or nephropathy) • The management of adult and pediatric patients with leukemia, lymphoma and solid tumor...

Equivalent pills — same medicine, different imprint

The pills below contain the same active ingredient at the same strength (Allopurinol 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.

350 U Allopurinol 300 mg — White · round · 11 mm 2084 V Allopurinol 300 mg — Orange · round · 11 mm I 136 Allopurinol 300 mg — Pink · capsule · 11 mm

DAN DAN 5544 Allopurinol 300 mg — Orange · round · 11 mmFull page in a later wave

AX Allopurinol 300 mg — White · round · 11 mmFull page in a later wave

RG11 Allopurinol 300 mg — Orange · round · 12 mmFull page in a later wave

AL3 Allopurinol 300 mg — White · round · 11 mmFull page in a later wave

M 71 Allopurinol 300 mg — White · round · 11 mmFull page in a later wave

MP 80 Allopurinol 300 mg — Orange · round · 12 mmFull page in a later wave

ZYLOPRIM 300 Allopurinol 300 mg — Orange · round · 4 mmFull page in a later wave

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Frequently asked questions

What pill has the imprint U 6 H?

A white round tablet with the imprint U 6 H matches the FDA label for Allopurinol 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 U 6 H 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 U 6 H · Allopurinol — all forms & strengths · White pills · Round pills

Source: FDA label data via DailyMed/openFDA · Label set ID 20015399-43f8-4917-8ffe-dd8055c75712 · Record extracted from the openFDA bulk export of October 29, 2026. Spotted an error? Report it — include the imprint and what looks wrong.