Oral Hypertension Adult: As hydrochloride: 10 mg once daily, increased after 2 wk to 20 mg daily if necessary. Elderly: The recommended dosage is 10 mg orally once a day at least 15 minutes before meals; the dose may be increased to 20 mg depending on the individual patient's response. Hepatic impairment: Special care should be exercised in patients with mild to moderate renal or hepatic dysfunction. Dosage above 20 mg daily must be approached with caution. Lercanidipine is not recommended for use in patients with severe hepatic dysfunction.