First generation antihistamines usually work for about ... For example, Zyrtec-D combines the antihistamine cetirizine with the decongestant pseudoephedrine, which might help with congestion ...

Older types of antihistamines, known as first-generation antihistamines ... you might want to consider a decongestant in addition to antihistamines. Decongestants target the relief of a stuffy ...