CHFpatients.com - So you have heart failure - Read The Manual! I think Zyrtec is blocking it off as much as it can. I was thinking about taking flonase, I did some research and what I found out was that it's a steriod. You expect to feel tired if you take a sleeping pill, but other kinds of medications can cause fatigue, too. It’s one of the most common side effects of prescription and over-the-counter medicines. Actifed Cold and Allergy is used to treat sneezing, cough, runny nose, and other symptoms of allergies and the common cold. Includes Actifed side effects, interactions and indications. Taking a beta blocker can make you feel more tired or out of breath during exercise or normal daily routines. This gets better for most people, but for some this may not go away. Lisinopril is an ACE-inhibitor blood pressure pill that can cause a persistent cough. The lisinopril cough may have a dramatic impact on quality of life. What they do. When your heart is not pumping as well as it should, your body will try to compensate by producing adrenaline and noradrenaline, hormones that cause the heart to beat faster and increase blood pressure. Summary. Metoprolol side effects that are most common which include constipation, drowsiness, headache and nausea are often short-lived and easily treatable. Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose). Metoprolol er (Toprol XL) is an inexpensive drug used to treat high blood pressure and prevent chest pain. It is also used after a heart attack to prevent an additional heart attack from occurring.