â¢Migraine headaches -- spots of light, halos, or zigzag patterns are common symptoms prior to the start of the headache. Other potential causes of vision problems include fatigue, overexposure to the outdoors (temporary and reversible blurring of vision), and many medications.
The usual initial dose of atenolol (Tenormin) for adult patients with hypertension is 50 mg taken once a day. The maintenance dose may be adjusted after a couple of weeks.
Usual Adult Dose for Hypertension. Initial dose: 30 to 60 mg orally 3 to 4 times a day. Maintenance dose: 180 to 360 mg orally/day in divided doses. SR initial dose: 60 to 120 mg orally twice a day. SR maintenance dose: 240 to 360 mg orally/day.