Pharmacy Exam Review

Allergic Rhinitis

Last updated on: March 16th, 2019

Background

  • Inflammation of nasal membrane. Also called "hay fever"
  • Neti-pot, avoid exposure, environmental control.

 

Intranasal corticosteroid

  • Drugs: Beclomethasone (Beconase), Budesonide (Rhinocort), Ciclesonide (Omnaris), Flunisolide (Nasarel), Fluticasone (Veramyst,Flonase), Mometasone (Nasonex), Triamcinolone (Nasacort)
  • 1st line therapy for mild-moderate disease

 

 

Oral antihistamine

  • Antagonist of histamine at H1 receptor
1st generation

 

Chlorpheniramine

Clemastine (Tavist)

Diphenhydramine (Benadryl)

Cyproheptadine(Periactin)

CNS effect: sedation, cognitive changes;

Anticholinergic effect: Caution in BPH, glaucoma, constipation, urinary retention

2nd generation

 

Cetirizine (Zyrtec)

Desloratadine (Clarinex)

Fexofendadine (Allegra)

Levocetirizine (Xyzal)

Loratadine (Claritin)

Onset: cetirizine/levocetirizine work faster

Less sedation (esp. cetirizine, levocetirizine)

 

Intranasal antihistamine

  • Drugs: Azelastine (Astelin, Astepro), olopatadine (Patanase)
  • Bitter taste, helps nasal congestion

 

Decongestant

  • MOA: alpha adrenergic agonist, cause vasoconstriction
  • SE: insomnia, loss of appetite, increase BP, palpitation
  • Caution in: arrhythmia, angina, HTN, coronary artery disease

 

Combat Meth Act

  • Daily limit of pseudoephedrine (PSE): 3.6g
  • Monthly limit: 9g
  • Log book keep at least 2-yr

 

Intranasal cromolyn (Nasalcrom)

  • Good safety profile, DOC in children and pregnancy

 

Ipratropim bromide (Atrovent nasal)

  • Effective in rhinorrhea, but not other symptoms

 

Montelukast (Singulair)

  • 4mg granule (6mos-5 yrs) chewable (2-5 yrs)
  • 5mg chewable (6-14 yrs)
  • 10mg (>15 yrs)

 




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