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.
From Wikipedia, the free encyclopedia. Atenolol is a selective Î²1 receptor antagonist, a drug belonging to the group of beta blockers (sometimes written Î²-blockers), a class of drugs used primarily in cardiovascular diseases.Introduced in 1976, atenolol was developed as a replacement for propranolol in the treatment of hypertension.lood or plasma atenolol concentrations may be measured to confirm a diagnosis of poisoning in hospitalized patients or to assist in a medicolegal death investigation. Plasma levels are usually less than 3 mg/L during therapeutic administration, but can range from 3â30 mg/L in overdose victims.