Elderly Pharmacokinetic data from fasting elderly patients with ET (age range 65-75 years) compared to fasting adult patients (age range 22-50 years) indicate that the Cmax and AUC of anagrelide were 36% and 61% higher respectively in elderly patients, but that the Cmax and AUC of the active metabolite, 2- amino-5, 6-dichloro-3, 4-dihydroquinazoline, were 42% and 37% lower respectively in the elderly patients.