Pill identification — FDA label match

I 21 Pill — Gabapentin 600 mg (White, Oval)

A white oval tablet with the imprint I 21 matches the FDA label for Gabapentin 600 mg. Compare every detail below with your pill, and confirm with a pharmacist before relying on it.

Imprint	I 21
Imprint parts	I · 21 (the code is split across the pill — often one part per side)
Generic name	Gabapentin
Active ingredient(s)	Gabapentin 600 mg
Strength	600 mg
Dosage form	Tablet, Film Coated
Colour	White
Shape	Oval
Size	17 mm
Score	Two even pieces
Labeler	Remedyrepack Inc.
NDC examples	70518-4532-0, 70518-4532-1

What this medicine is

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

Gabapentin tablets are indicated for: Management of postherpetic neuralgia in adults Adjunctive therapy in the treatment of partial onset seizures, with and without secondary generalization, in adults and pediatric patients 3 years and older with epilepsy Gabapentin tablets are indicated for:...

Equivalent pills — same medicine, different imprint

The pills below contain the same active ingredient at the same strength (Gabapentin 600 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.

D 24 Gabapentin 600 mg — White · oval · 17 mm G6 Gabapentin 600 mg — White · capsule · 17 mm

G 31 Gabapentin 600 mg — White · oval · 17 mmFull page in a later wave

1 2 Gabapentin 600 mg — White · capsule · 9 mmFull page in a later wave

NT 150 Gabapentin 600 mg — White · oval · 9 mmFull page in a later wave

O E 600 Gabapentin 600 mg — White · oval · 17 mmFull page in a later wave

I 2 Gabapentin 600 mg — White · oval · 9 mmFull page in a later wave

R 636 Gabapentin 600 mg — Green · oval · 17 mmFull page in a later wave

Discount cards: partner discount-card offers for this medicine will appear in this space once our partner programs launch. This slot is intentionally empty — we never link to places that sell prescription medicines.

Frequently asked questions

What pill has the imprint I 21?

A white oval tablet with the imprint I 21 matches the FDA label for Gabapentin 600 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 I 21 pill look like?

On its FDA label it is described as a white oval tablet, 17 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 I 21 · Gabapentin — all forms & strengths · White pills · Oval pills

Source: FDA label data via DailyMed/openFDA · Label set ID fb726cb0-d422-48dd-a8ed-adbde812b005 · Record extracted from the openFDA bulk export of October 29, 2026. Spotted an error? Report it — include the imprint and what looks wrong.