DRUG-DRUG INTERACTIONS Flashcards
Some drug-drug interactions are intended and beneficial others are
Unintended and detrimental
May result in intensified effects, diminished effects or an entirely new effect
Drug-drug interactions
Beneficial when they increase therapeutic effects and detrimental when the increase adverse effects
Synergistic interactions
Beneficial when they decrease adverse effects and detrimental when they decrease beneficial effects
Inhibitory interactions
Can result in increased or decreased absorption
Drug interactions
Rarely results in a sustained or significant increase in plasma levels of free drug
Competition for protein binding
Can accelerate the metabolism of other drugs
Drugs that induce hepatic drug metabolizing enzymes
It may be necessary to increase the dosages of other drugs when
an inducing agent that is added to the regime
Dosages of other drugs may need to be reduced when
In inducing agent is discontinued
A drug that inhibits the metabolism of other drugs will increase their_____.
The result may be beneficial but usually it is_____
Levels
Detrimental
We’ll diminish the effects of drugs that act as agonists at that receptor
Drugs that act as antagonists
If the antagonist prevents toxic effects of the agonist the result is_____
Beneficial
If the antagonist prevents therapeutic effects of the agonist the result is
Detrimental
If at all possible, drugs that are toxic to the same organ should not be
Combined
By minimizing the number of drugs the patient is given and by taking a thorough history
We can help reduce the risk of adverse interactions