AIM:To study the pharmacokinetics of erythromycin in healthy elderly volun-teers. METHODS: The pharmacokinetics of erythromycin in the elderly healthy volunteers were studied and compared with the young healthy volunteers. After oral administration,the drug concentrations in serum and urine were assayed by bioassay,and pharmacokinetics pa-rameters were calculated. RESULTS: After a single oral dose of 500 mg capsules of ery-thromycin, c_(max),t_(max), T_(1/2β) and AUC in the elderly group were 3. 04 mg/L,2. ...