Fesoterodine and Fluphenazine: interaction and safety
This source-based reference is not a personal treatment recommendation. The relevance and management of an interaction depend on the exact products, route, dose and clinical situation.
Interaction mechanism
Antimuscarinic effects may add.
Clinical significance and safety
Fesoterodine and Fluphenazine: Antimuscarinic effects may add. Dry mouth, blurred vision, constipation, urinary retention, overheating or confusion may increase. Older adults and people with glaucoma or bowel or bladder obstruction are particularly vulnerable. Severe abdominal distension, inability to urinate or a painful red eye needs prompt assessment. The cited fluphenazine source concerns the long-acting decanoate injection; different formulations are not interchangeable. Ask a pharmacist or prescriber to review the full medicine list before adding or changing treatment.
Using this information
This is a source-based reference record, not a recommendation to combine, stop or change medicines. A missing interaction record does not establish safe use. A qualified healthcare professional should consider the exact products, doses, other medicines and individual health circumstances.