Respiratory Agents

to treat symptoms of rhinitis,prevent motion sickness,induce sleep, suppress the cough response

to relieve nasal congestion

to suppress non-productive cough

act on cough control center in medulla to suppress the cough reflex

drowsiness, dizziness, nausea,constipation

hallucinations at high doses

blocks histamines thereby decreasing allergic response

drowsiness,dry mouth,urinary retention,constipation,photosensitivity

hemolytic anemia, thrombocytopenia

stimulate alpha-adrenergic receptors ->capillary vasoconstriction ->decreases secretions and shrinks nasal mucous membanes

jittery, nervous, hypertension

frequent use equals tolerance and rebound, ^ bp and blood glucose levels

increase production of respiratory tract fluids to help liquefy and decrease viscosity of secretions

to loosen and promote elimination of bronchial secretions

dizziness, nausea, vomiting ,rash

to treat bronchospasms associated with acute asthma attacks

relaxing of smooth muscle of bronchi

nervousness, tremors, restlessness, insomnia, hyperglycemia, muscle cramps

tachycardia, palpitations, hypertension

to promote bronchodilation in asthma and chronic obstructive pulmonary disease(COPD)

relaxation of smooth muscle of bronchi ->bronchodilation

annorexia, nausea, vomiting

cardiac dysrythmia, tachycardia, seizures

prophylactic treatment of bronchial asthma and allergic rhinitis

inhibits release of hestamine from mast cells

rebound bronchoconstriction cough

none

to reduce inflammatory symptoms of asthma triggered by allergic and environmental stimuli

inhibits leukotriene formation,mucous production and airway wall edema

fever, fatigue, nasal congestion, cough, sore throat, dental pain, rash

none