Generic name: Pseudoephedrine / Acrivastine
Semprex is used to relieve the symptoms of allergies, including runny nose, nasal stuffiness, sneezing, watery eyes, and itching. It may also be used by your physician to treat certain other conditions.
It refers to the decongestant and antihistamine combination. It blocks histamine and causes shrinkage and vasoconstriction of nasal mucous membranes, thus helping to drain nasal passages and treat watery eyes, sneezing, and runny nose.