Pseudoephedrine and Terfenadine are used in the treatment of sneezing and runny nose caused by allergies.
How Pseudoephedrine and Terfenadine work: Pseudoephedrine is a decongestant that narrows small blood vessels, providing temporary relief from nasal congestion or stuffiness. Terfenadine is an antihistamine that blocks the action of histamine, a chemical messenger responsible for symptoms such as a runny nose, watery eyes, and sneezing.
Common side effects of Pseudoephedrine and Terfenadine include dryness in the mouth, headache, nausea, vomiting, tiredness, sleepiness, and restlessness.