http://www.medications.com/effect/view/31023 I have been taking Atenolol 25mg./day for 5 1/2 months for high blood pressure. I am a 63 year old female. The side effects for me are tingling in my fingers, which is especially annoying at night, and muscle pain in my legs. I did not associate either Mon, 02 Jun 2008 15:05:43 -0400 http://www.medications.com/effect/view/31023?item=8831 you should consult with your doctor before changing your dosage. Stopping an Atenolol containing medication or changing it in any abrupt can cause irregular heart beat and even a heart attack. http://www.medications.com/effect/view/31023?item=8831 Mon, 02 Jun 2008 15:53:27 -0400 http://www.medications.com/effect/view/31023?item=8834 I actually reduced the dose as a result of consulting with my doctor. I monitor my blood pressure and heart rate at home.Since reducing the dose of Atenolol, my blood pressure has remained low/normal and heart rate avg. about 60 bpm. http://www.medications.com/effect/view/31023?item=8834