Found a brown round pill and not sure what it is? Brown and dark reddish-brown round tablets span prescription diuretics and blood pressure drugs, as well as common OTC iron and B-vitamin supplements. The only reliable way to identify a specific pill is its imprint code.
Most Common Brown Round Pills
Furosemide
Generic / Lasix (some manufacturers)
Loop diuretic for fluid retention (edema) and heart failure.
Varies by manufacturer; many versions are white or yellow
Spironolactone
Generic / Aldactone (some manufacturers)
Potassium-sparing diuretic for fluid retention, heart failure, and hormonal conditions.
Common imprints: SEARLE 1001, G 4910, P 25
Prazosin
Generic / Minipress (some manufacturers)
Alpha blocker for high blood pressure and PTSD nightmares.
Varies by manufacturer and strength
Iron Supplement (Ferrous Sulfate)
OTC supplement (various brands)
Iron supplement for deficiency anemia. Available without prescription.
Common imprints: 45, FE, or brand marks — varies widely
B-Complex Vitamin
OTC supplement (various brands)
B-vitamin supplement for nutritional support. Available without prescription.
Varies widely by brand
Identify Your Brown Round Pill
Enter the imprint code from your pill for an exact match — or search by shape and color to browse all options.
Brown can range from tan to dark chocolate, and many databases classify the same tablet differently. Look for an imprint on both sides, then try searching by imprint alone if "brown round" doesn't return a match. Some tablets described as brown are classified as orange or red in official databases.
Many brown round OTC supplements have minimal or no imprints (iron, B-vitamins). For those, the product label is the most reliable source. For emergencies, call 1-800-222-1222.
Frequently Asked Questions
What is a brown round pill?
Brown round tablets include furosemide and spironolactone from some generic makers, prazosin for blood pressure, iron supplements, and B-complex vitamins. The imprint code is the most reliable identifier.
How do I identify a brown round pill without an imprint?
All U.S. prescription tablets require a unique imprint. A brown round pill without an imprint is most likely an OTC supplement such as iron or a B vitamin. For emergencies, call Poison Control at 1-800-222-1222.
What is a common brown round iron supplement?
Ferrous sulfate iron supplement tablets are commonly dark reddish-brown to brown, often round. They are available OTC for iron deficiency anemia. The specific imprint and product label are the most reliable identification tools.