Bismuth Subsalicylate USP is a synthetic coordination complex of bismuth and salicylic acid, typically produced through controlled precipitation and purification processes to ensure high pharmaceutical-grade purity. Its fine, off-white powder form ensures consistent quality and compliance with USP specifications, making it suitable for a variety of oral dosage forms.

This compound is widely used in over-the-counter gastrointestinal medications, particularly for the treatment of diarrhea, heartburn, indigestion, and nausea. It is the active ingredient in many popular antidiarrheal formulations and plays a dual role as both an antacid and mild antibacterial agent, especially in the gastrointestinal tract.