Found a white capsule and not sure what it is? White capsules are common across antibiotics, nerve pain medications, antidepressants, and acid reducers. The most reliable identifier is the imprint code printed on the capsule body. Below are the most commonly encountered white capsules in the United States.
Most Common White Capsule Pills
Omeprazole 20 mg
Generic / Prilosec
Proton pump inhibitor for heartburn, acid reflux, and ulcers. Available OTC and by prescription.
Common imprints: OME 20, KU 136, L 490
Gabapentin 300 mg
Generic / Neurontin (Sandoz)
Anticonvulsant for nerve pain and seizure disorders.
Imprint: E 63
Amoxicillin 250 mg / 500 mg
Generic / Amoxil
Penicillin-class antibiotic for bacterial infections.
Common imprints: AMOX 500 GG 849, WC 731, A45
Doxycycline 100 mg
Generic / Vibramycin
Tetracycline antibiotic for bacterial and certain parasitic infections.
Common imprints: WC 331, DOXY 100, par 077
Duloxetine 30 mg
Generic / Cymbalta
SNRI antidepressant for depression, anxiety, and nerve pain.
Common imprints: LILLY 3235, G DR 30
Identify Your White Capsule
Enter the imprint code from your capsule for an exact match — or search by shape and color to browse all options.
Look for text printed on the capsule body — most prescription capsules have an imprint on one or both halves. This may be the manufacturer's name, a drug code, or a strength number. The print may be small; use good lighting or a magnifying glass if needed.
Enter the imprint code with "white" and "capsule" in PillID's identifier. Capsules are often two-toned (one white half, one colored half); if yours is part white, try both color filter settings or search by imprint alone for the broadest results.
A white capsule with no imprint at all is likely an OTC supplement or a compounded drug. For poison emergencies, call 1-800-222-1222.
Frequently Asked Questions
What is a white capsule pill?
White capsules are commonly used for omeprazole 20mg, gabapentin 300mg (E 63), amoxicillin antibiotics, doxycycline 100mg, and duloxetine 30mg. The printed imprint on the capsule body is the most reliable way to tell them apart.
How do I identify a white capsule without an imprint?
U.S. prescription capsules must carry a printed imprint. A completely unmarked white capsule is likely an OTC supplement or compounded medication. For emergencies, call Poison Control at 1-800-222-1222.
What is the white capsule with "E 63" on it?
E 63 is the imprint on gabapentin 300mg capsules made by Sandoz. Gabapentin is used to treat nerve pain conditions such as postherpetic neuralgia and as an adjunctive treatment for partial seizures.