Methenamine Sodium Phosphate Monobasic Monohydrate Phenyl Sa + Ketoconazole Interaction
Moderateinteraction on record
Description
May cause increased gastrointestinal pH resulting in marked reduction in ketoconazole absorption. Take combination at least 2 hours after ketoconazole.
Mechanism
Increased gastrointestinal pH reducing ketoconazole absorption
Source: NLP:methenamine, sodium phosphate, monobasic, anhydrous, phenyl salicylate, methylene blue and hyoscyamine sulfate