Drug General Information (ID: DDI30EZR7H)
Drug Name			Hydroxyzine		Drug Info		Potassium chloride		Drug Info
Drug Type		Small molecule				Small molecule
Therapeutic Class		Anxiolytics/Sedatives/Hypnotics				Dietary Supplement
Structure

Mechanism of Hydroxyzine-Potassium chloride Interaction (Severity Level: Major)
Increased risk of GI mucosal injury/bleeding risk Click to Show/Hide Mechanism Graph
Drug Name		Hydroxyzine				Potassium chloride
Mechanism		Decrease gastrointestinal motility				GI mucosal injury/bleeding risk
Key Mechanism Factor 1
		Factor Name		Gastrointestinal toxicity
		Factor Description		The risk and severity of gastrointestinal toxicity, including inflammation, bleeding, ulceration, and perforation, increases when drugs with gastrointestinal mucosal irritant effects are combined.
Mechanism Description		Increased risk of GI mucosal injury/bleeding risk by the combination of Potassium chloride and Hydroxyzine

Recommended Action
Management		The use of certain oral solid formulations of potassium chloride is considered contraindicated in patients receiving agents with anticholinergic properties at sufficient doses to exert anticholinergic effects. A liquid formulation of potassium chloride should be considered. Patients prescribed a solid oral formulation should be advised to discontinue potassium therapy and contact their physician if they experience potential symptoms of upper GI injury such as severe vomiting, abdominal pain, distention, and gastrointestinal bleeding.

References
1	Farquharson-Roberts MA, Giddings AE, Nunn AJ "Perforation of small bowel due to slow release potassium chloride (slow-K)." Br Med J 3 (1975): 206. [PMID: 1148734]
2	Lambert JR, Newman A "Ulceration and stricture of the esophagus due to oral potassium chloride (slow release tablet) therapy." Am J Gastroenterol 73 (1980): 508-11. [PMID: 7424872]
3	Lofgren RP, Rothe PR, Carlson GJ "Jejunal perforation associated with slow-release potassium chloride therapy." South Med J 75 (1982): 1154-5. [PMID: 7123349]