what is the definition of these:

Question

drug synergism.
drug synergism.

drug antagonism.
drug antagonism.

drug interactions.

Answer 1

Drug synergism is when the effect of two or more drugs used together is greater than the sum of their individual effects.

Drug antagonism is when the effect of two or more drugs used together is less than the sum of their individual effects.

Drug interactions refer to the effects that occur when two or more drugs are used together and interact with each other, potentially causing changes in their effectiveness or side effects.