Found a small white round pill and not sure what it is? Small white round tablets are extremely common — they include some of the most frequently prescribed medications in the United States. "Small" is relative; always use the imprint code alongside color and shape for accurate identification. Below are the most commonly encountered small white round pills.
Most Common Small White Round Pills
Aspirin 81 mg
Baby aspirin / St. Joseph / generic
Low-dose aspirin for cardiovascular disease prevention. OTC; also commonly prescribed.
Common imprints: 81, L 203, BAYER
Clonazepam 0.5 mg
Generic / Klonopin
Benzodiazepine for seizure disorders and panic disorder. Schedule IV controlled substance.
Common imprints: TEVA 832, M C13, E 64
Lorazepam 0.5 mg
Generic / Ativan
Benzodiazepine for anxiety and seizures. Schedule IV controlled substance.
Common imprints: MYLAN 457, 59 M, WPI 3972
Hydrochlorothiazide 12.5 mg
Generic / Microzide
Thiazide diuretic for high blood pressure.
Common imprints: H1, APO H12.5, HCTZ 12.5
Folic Acid 1 mg
Generic (Rx and OTC)
B-vitamin supplement for pregnancy, anemia prevention, and red blood cell production.
Common imprints: FA 1, LOGO 1, 10
Levothyroxine 25 mcg
Generic / Synthroid (orange-colored in brand; some generics white)
Thyroid hormone replacement for hypothyroidism. Lowest common strength.
Common imprints: M L 1, LOGO 25, JSP 562
Identify Your Small White Round Pill
Enter the imprint code from your pill for an exact match — or search by shape and color to browse all options.
Use a magnifying glass or phone camera to read the imprint on the tiny tablet. Small tablets can have very fine imprints — take your time to capture every character. Many small white round tablets contain controlled substances (benzodiazepines) or narrow therapeutic index drugs (levothyroxine, warfarin) where exact identification is critical.
Enter the complete imprint along with "white" and "round" in PillID's identifier. If uncertain whether the tablet is truly "small" versus standard-sized, also check the general white round pill guide. For emergencies, call 1-800-222-1222.
Frequently Asked Questions
What is a small white round pill?
Small white round tablets include aspirin 81mg, clonazepam 0.5mg, lorazepam 0.5mg, hydrochlorothiazide 12.5mg, folic acid 1mg, and levothyroxine 25mcg. The imprint code is the only reliable way to tell them apart.
How do I identify a small white round pill without an imprint?
All U.S. prescription tablets require a unique imprint by law. A small white round pill without an imprint is likely an OTC supplement. For emergencies, call Poison Control at 1-800-222-1222.
What is the tiny white round pill with "81" on it?
A tiny white round tablet marked 81 is almost certainly aspirin 81mg (baby aspirin). It is widely available OTC and commonly recommended for cardiovascular disease prevention. Common imprints include L 203 and BAYER.