2) A goal drug(目标药物) In theory,a“ goal drug” would produce the specifically desired effect be administered by the most desired route (generally orally) at minimal dosage and dosing frequency, have optimal onset and duration of activity 理论上,目标药物应能通过最理想的途径 (通常为口服)以最小的剂量和给药频率 给药,能产生特异的期望疔效,具有最理 個的起效和持续时间,2) A goal drug （目标药物） In theory, a “goal drug” • would produce the specifically desired effect, • be administered by the most desired route (generally orally) at minimal dosage and dosing frequency, • have optimal onset and duration of activity, 理论上，目标药物应能通过最理想的途径 （通常为口服）以最小的剂量和给药频率 给药，能产生特异的期望疗效，具有最理 想的起效和持续时间