<prompt> Two drugs with opposite action on different receptors isPhysical antagonismCompetitive antagonismNon competitive antagonismPhysiological antagonism  <response>: physiological antagonism- functional antagonism - 2 drugs binding to two diff receptors, produces opp effects in same physiological system physical antagonism - by viue of physical propeies - opp to each other- charcoal helps in adsorption in alkaloid poisoning pharmacological anatagonism- competitive and non-competitive types Refer kDT 6e ,katzung 12e 