- Pimobendan
- Spironolactone
- High blood pressure (hypertension)
- Potassium deficiency
- Hyperaldosteronism
- congestive heart failure (CHF)
- dilated cardiomyopathy, or an enlarged, weakened heart
- An Oral Suspension (includes x 1 complimentary oral syringe)
- verapamil
- theophylline
- pentoxiphylline
- propranolol
- are pregnant or lactating
- have high potassium levels in the blood
- suffer from hypoadrenocorticism
- suffer from Cushing's disease and are taking the medication mitotane
- facial swelling
- breathing difficulties
- fainting
- fever
- shock
- hives
- pale gums
- coma
- seizures
- sudden onset of diarrhea