Differentiate between tolerance, antagonism, and synergism in order to select the drug interaction that occurs during antagonism.
A. The combined effect of two drugs, by different mechanisms of action, is equal to the sum of their individual effects.
B. The combined effect of two drugs is less than the sum of their individual effects.
C. The combined effect of two drugs is greater than the sum of their individual effects.
D. The combined effect of two drugs, by the same mechanism of action, is equal to the sum of their individual effects.
Answer: B
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