Found a gray capsule and not sure what it is? Gray capsules are relatively distinctive — a smaller subset of medications use gray shells. The most reliable identifier is the imprint code printed on the capsule body. Below are the most commonly encountered gray capsule pills.
Most Common Gray Capsule Pills
Pregabalin 75 mg
Generic / Lyrica
Anticonvulsant for nerve pain, fibromyalgia, and seizures. Schedule V controlled substance.
Brand Lyrica: PGN 75; generic imprints vary
Doxycycline
Generic (some manufacturers)
Tetracycline antibiotic for bacterial infections, acne, and malaria prevention.
Varies by manufacturer and strength
Gabapentin 400 mg
Generic / Neurontin (some manufacturers)
Anticonvulsant for nerve pain and seizure disorders.
Varies by manufacturer
Temazepam 15 mg
Generic / Restoril
Benzodiazepine sleep aid for short-term insomnia treatment. Schedule IV controlled substance.
Common imprints: 93 5269, FOR SLEEP
Lithium Carbonate
Generic / Lithobid (some capsule forms)
Mood stabilizer for bipolar disorder. Requires blood level monitoring.
Common imprints: PPP Li 300, Miles 300
Identify Your Gray 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 both halves of the capsule. Gray can appear as light silver-gray, dark charcoal, or anything between. Some gray capsules are two-toned with another color on one half. Record the complete imprint from both halves before searching.
Enter the imprint, "gray," and "capsule" in PillID. If results don't appear, try searching by imprint alone, as some databases may categorize the shade differently. For emergencies, call 1-800-222-1222.
Frequently Asked Questions
What is a gray capsule pill?
Gray capsules include pregabalin 75mg (Lyrica), some doxycycline forms, gabapentin 400mg from some manufacturers, temazepam 15mg (Restoril), and lithium carbonate. The imprint on the capsule body is the most reliable identifier.
How do I identify a gray capsule without an imprint?
U.S. prescription capsules must carry a printed imprint. A gray capsule with no markings is likely an OTC supplement or compounded medication. For emergencies, call Poison Control at 1-800-222-1222.
What is the gray capsule for nerve pain?
Pregabalin 75mg (Lyrica) is the most recognized gray capsule for nerve pain. It is a Schedule V controlled substance. Gabapentin 400mg from some manufacturers also comes in gray capsule forms for nerve pain and seizure conditions.