H1 & H2 Antihistamines & Ergots Flashcards
1st gen sedating H1
doxylamine Diphenhydramine chlorpheniramine promethazine cinnarixine hydroxyzine astemizole
antagonize histamine induced bronchoconstriction, uticaria
treatments of allergies, sedating, can prevent motion sickness
1st gen H1
morning sickness given with vit 6
doxylamine
motion sickness
reduces tremors and rigidity seen in Parkinsonism
Diphenhydramine
cough suppressant
chlorpheniramine
anti emetic
reduce tremors and rigidity seen in Parkinsonism
promethazine
treats veritgo
cinnarixine
ADR: sedation, confusion, motor incoordination, alcohol will increase intensity; anticholinergic - dry mouth, constipation, blurry vision, urinary hesitancy
1st gen H1
treatments for allergies
2nd gen H1
loratadine
fexofenadine
cetirizine
azelastin
produced by fungus clavicles purpurae
partial agonist to alpha & 5HT2 receptor
SE: nausea, vomit, diarrhea, prolong vasoconstriction - ischemia and gangrene
Contraindications: coronary ischemia and pregnacy
Ergot Alkaloids
ergots that work on CNS
LCD
bromocriptine
pergolide
ergots that cause uterus to contract and used in OB bleeding and post part hemorrhage
ergonovine
ergotamine
ergots that cause blood vessels to contract
ergotamine
methysergide
used in hyperprolactinemia
bromocriptine
pergolide
ergot used in parkinsons
bromocriptine