I was prescribed these for high blood pressure a few years ago and i had no side affects from them whatsoever, they seemed to work well for me.
You may have read the side effects already, but if not here's what they are:
What side effects can be expected?
Beta-blockers reduce the amount of blood which the heart pumps out at each stroke. This leads to a fall in blood flow through the body tissues particularly affecting the skin, the muscles and the extremities (fingers, toes, etc). As a result people often complain of feeling listless or tired and experience cold hands and feet, especially for a few weeks after starting treatment. This is entirely predictable and to some extent is an indication that your treatment is working.
In most cases the body becomes tolerant to the above effects and they become much less troublesome as treatment continues. It may, however, prove to be an ongoing problem for those who have poor circulation in the first instance. This treatment might not be suitable for those who suffer from conditions affecting the circulation (intermittent claudication or calf pain on walking, Raynaud's phenomenon, systemic sclerosis, etc).
Beta-blockers reduce the flow of air through the bronchials (tubes) in the lung. Patients who suffer from asthma should not receive these medicines which can cause severe and potentially serious wheezing. You may also be affected if you have chronic bronchitis (especially smokers) but the extent of breathing problems can vary from relatively mild to severe.
Beta-blockers slow heart rate (this is how they stop palpitations). If this occurs excessively, however, you may become dizzy or feel faint. Your Doctor will check your pulse rate from time to time - this is an excellent method of establishing the correct dosage in your case. However, if you suffer from heart failure or heart rhythm problems related to a slow beat, treatment with a beta-blocker is best avoided.
These medicines, and Propranolol in particular, can cause sleep disturbances with the occurrence of vivid dreams or nightmares and insomnia.
Skin rashes are rarely reported but a "flare up" or general worsening in condition in people with psoriasis is not uncommon.
Sexually active men may experience difficulty in obtaining erections due to beta-blocker therapy and complete loss of erection (impotence) does occasionally arise.