For most patients, the recommended starting dose of LEVITRA is 10 mg, taken orally, as needed, approximately 60 minutes before sexual activity. The dose may . Detailed Vardenafil dosage information for adults and the elderly. Includes dosages for Erectile Dysfunction; plus renal, liver and dialysis. Detailed dosage guidelines and administration information for Levitra (vardenafil hydrochloride). Includes dose adjustments, warnings and.