The phenylephrine in this medicine can interact with propranolol, and with other beta-blocker medicines used for blood pressure or heart problems. The leaflet flags this for people who have already been taking propranolol before phenylephrine is given. If you take propranolol, tell your doctor or pharmacist before using this medicine.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.