Propranolol Decreases Tachycardia and Improves Symptoms in Postural Tachycardia Syndrome: Less is more
- Patients were given either 20 or 80mg of propranolol and placebo.
- Propranolol decreased standing, seated and orthostatic tachycardia.
- While 80mg propranolol decreased heart rate more than 20mg, symptom improvement was greater with the lower dose.