Antihistamines Flashcards
1
Q
general mechanisms
A
block H1 receptors
2
Q
why might it be useful to know which chemical class an antihistamine belongs to
A
to know if one antihistamine doesn’t work for a patient that all drugs in that class are chemically related and same class will not work
3
Q
first gen vs second gen
A
second gen are going to have less of a sedation effect because it does not cross the blood brain barrier
4
Q
anticholinergic
A
main neurotransmitter for parasympathetic so the results of ANTI are
ANTI slud: salivation, lacrimation, urination, dedication
also causes drowsiness and dryness
5
Q
first gen
A
diphenhydramine
hydroxyzine
promethazine
6
Q
what is promethazine used for
A
N/v
7
Q
second gen
A
cetirizine: active metabolite of hydroxide so increase sedation
levocetrizine
azelastine
loratadine
