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bismuth preparations, combinations

C05AX02

Forms & Strengths

Suppositories: Bismuth subgallate 200 mg / bismuth subgallate combinations
Topical Ointment/Cream: Bismuth subgallate combined with zinc oxide, balsam of Peru, and hydrocortisone

Adult Dosing

Rectal suppositories: Insert 1 suppository rectally twice daily (morning and evening) and after each bowel movement
Topical ointment: Apply a thin layer to the affected perianal area up to 3 to 4 times daily

Pediatric Dosing

Safety and efficacy in pediatric patients have not been established; use is generally not recommended

Indications

Symptomatic relief of anorectal disorders, hemorrhoids, and perianal inflammation
Temporary relief of burning, itching, and discomfort associated with hemorrhoids

Mechanism of Action

Bismuth subgallate acts as an astringent by precipitating proteins on broken skin and mucous membranes
Provides a protective physical coating over inflamed anorectal tissue to reduce irritation
Exhibits mild antiseptic and vasoconstrictive properties to reduce local edema and weeping

Contraindications

Hypersensitivity to bismuth preparations or any component of the formulation
Presence of anorectal tuberculosis, fungal infections, or viral lesions (e.g., herpes simplex) in the application area

Adverse Reactions

Local burning, stinging, or irritation at the application site
Contact dermatitis or allergic skin reactions due to excipients or active ingredients
Rare systemic absorption leading to bismuth toxicity with prolonged or extensive use on broken skin

Drug Interactions

Concurrent use of multiple topical anorectal products may increase the risk of skin irritation
Potential decreased absorption of other rectally administered medications due to the protective mucosal barrier

Curated Content: Needs Vetting Before Put to Clinical Use