Antitussive
Indication: Suppresses nonproductive cough. Side effects: Drowsiness, dizziness, nausea. Special instructions: Avoid alcohol; do not use with productive cough; may cause sedation—use caution when driving.
Decongestant
Indication: Nasal congestion from colds, allergies, sinusitis. Side effects: Nervousness, increased heart rate, insomnia. Special instructions: Avoid use with hypertension; limit use of nasal sprays to 3 days to prevent rebound congestion.
Bronchodilator
Indication: Asthma, COPD, bronchospasm. Side effects: Tremors, nervousness, rapid heart rate. Special instructions: Use inhaler as directed; wait 1 minute between puffs; rinse mouth after inhaled corticosteroid combinations.
Antihistamine
Indication: Allergies, rhinitis, itching, motion sickness. Side effects: Drowsiness (first-generation), dry mouth, blurred vision. Special instructions: Avoid alcohol; use caution when driving; increase fluids to reduce dryness.
Expectorant (Mucolytic)
Indication: Thick mucus, productive cough. Side effects: Nausea, vomiting, dizziness. Special instructions: Increase fluid intake to thin secretions; take with a full glass of water; do not suppress productive cough unless necessary.