This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pharmacology, Subject name: Pharmacology
Two drugs with opposite action on different receptors is 
Select and explain. 
A. Physical antagonism, B. Competitive antagonism, C. Non competitive antagonism, D. Physiological antagonism
D: Physiological antagonism
Answer: D: Physiological antagonism 
Explanation: 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 6/e ,katzung 12e