In patients currently being treated with diuretic, symptomatic hypotension occasionally can occur following the initial dose of perindopril. You may not be able to take Aceon, or you may require dosage adjustment or special monitoring during your treatment if you are taking any of the medicines listed above. Some serious side effects include inflammation of the face, eyes, feet or lower legs, irregular or rapid heartbeats, hoarseness, fever, difficulty swallowing or breathing, sore throat, lightheadedness and chills. In such cases, ACEON Tablets should be promptly discontinued and the patient carefully observed until the swelling disappears. For patients with lesser degrees of impairment creatinine clearance above 30 mL min the initial aceon pendant la nuit dosage should be mg day and dosage should not exceed mg day due to limited clinical experience.