Free notes, MCQs, tables & flowcharts for FMGE Pharmacology
Which of the following statements is true regarding competitive reversible antagonism?
AED50 remains unchanged in competitive reversible antagonism.
BEfficacy and Vmax remain unchanged.
CPotency remains unchanged in the presence of a competitive antagonist.
DAffinity (Kd) remains unchanged in competitive reversible antagonism.
A factor that is likely to increase the duration of action of a drug that is partially metabolized by CYP3A4 in the liver is:
AChronic administration of phenobarbital with the drug
BDisplacement from tissue binding sites by another drug
CChronic administration of rifampicin
DChronic administration of cimetidine with the drug
A patient on warfarin has a high INR. Which drug likely caused this?
AAmiodarone
BPhenytoin
CCarbamazepine
DRifampicin
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