You may report side effects to FDA at 1-800-FDA-1088. Use Propranolol Hydrochloride ER (Oral) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller ...

Medically reviewed by Femi Aremu, PharmD Barbiturates are a type of drug that slows down brain activity. Barbiturates have ...

e. Side effects that cause a disease or symptoms to worsen An example of this type of side effect would be someone with asthma who is taking propranolol to treat their palpitations (tachycardia).

In addition, all doses of propranolol CR provided effective 24-hour antihypertensive control, as shown by the evening measurements of DBP (which occurred at the trough of the dosing cycle).