Dr. Funk would like to write you a prescription for [b][i]Acebutolol[/i][/b] Acebutolol is a popular beta blocker and can be taken in 200mg capsules or 400mg capsules. Most adverse reactions to Acebutolol have been mild, not required discontinuation of therapy, and tended to decrease as the duration of treatment increases. Adverse events include dizziness, lightheadedness, excessive tiredness, headache, constipation, diarrhea, upset stomach and muscle aches. With serious adverse events such as shortness of breath or wheezing, swelling of the feet and lower legs and chest pain, it is advisable to contact a doctor immediately.