Etophylline + Theophylline / Deryphilline Etophylline + Theophylline CategoryBronchodilators ActionInhibition of phosphodiesterase enzyme leading to accumulation of cAMPIndicationBronchodilators DoseCat - 4mg/kg BIDContraindicationsInduce excite and hypocalcemiaAdverse EffectsInduce excite and hypocalcemiaAvailabilityDeryphilline - Tab 100 mg and Inj 220mg/2ml DOSE CALCULATOR