Bismuth subcitrate potassium is a bismuth salt used in combination with antibiotics and a proton pump inhibitor for the treatment of Helicobacter pylori infections.

[1][2] A fixed-dose combination with the antibiotics metronidazole and tetracycline is sold under the trade name Pylera.

[3] Other side effects of bismuth containing combination therapies are often difficult to assign to a specific component.

[citation needed] Bismuth absorption is increased by ranitidine and omeprazole.

It contains about 25.6% (mass percent) bismuth, which is the active moiety, and 22.9% potassium.