<prompt> Adult loading dose of aminophylline Is:50 mgkg0.5-1 mgkg2-3.5 mgkg5mgkg bd wt  <response>: Loading dose- It given as iv 250mg10ml- or 3-5mg kg aminophylline IV max 500mg maintanence dose- 500 micrograms kg hour Elderly: 300 micrograms kg hour Add 500mg to 500mL or 250mg to 250mL of a compatible infusion fluid 1mgmL. Administer using a rate controlled infusion pump. ESSENTIAL OF MEDICAL PHARMACOLOGY SEVENTH EDITION KD TRIPATHI PG NO.227 