- Lowering respiratory tract secretions while a pet is under anesthesia
- Treating organophosphate poisoining
- Treating cholinergic agent overdoses
- Treating muscarinic mushroom intoxication
- Bronchoconstrictive diseases
- Hypersialism, or excessive salivation
- Antimuscarinic agents decrease the secretion of fluids such as saliva and sweat.
- Antihistamines, such as Benadryl or Histacalm
- Benzodiazepines
- Phenothiazines
- Procainamide
- Quinidine
- Meperidine
- Corticosteroids
- Disopyramide
- Nitrites
- Primidone
- Some types of glaucoma
- A history of reactions to anticholinergic drugs
- GI obstructive disease
- GI infections
- Renal or hepatic dysfunction
- Hypertension
- Hyperthyroidism