Sedating antihistamines in
Talk to your doctor if you use the bronchodilator theophylline.Zyrtec can interact with this drug and increase your risk of side effects. Although cetirizine causes less drowsiness than a first-generation antihistamine, it can still make you drowsy.Liver and kidney disease can both affect how your body processes and removes cetirizine.You should also talk to your doctor before using Zyrtec if you have asthma because these drugs have been shown to cause bronchospasms in rare cases.Liver and kidney disease may affect how your body processes and removes Claritin.This can cause more of the drug to stay in your body and increase your risk of side effects.It comes in a tablet that you swallow whole, a tablet that dissolves in your mouth, a capsule, a liquid-filled capsule, and a liquid.
It comes in a tablet that you swallow whole and a liquid that you swallow.It relieves runny nose, sneezing, itchy or watery eyes, and nose and throat itching from hay fever. It comes in a tablet you swallow whole, a tablet you chew, a capsule you swallow whole, and a liquid you swallow.Other common brands with chlorpheniramine as a main active ingredient include: These side effects are more common in older people.Fexofenadine is the main active ingredient in Allegra.It relieves runny nose, sneezing, itchy and watery eyes, and itching of the nose or throat due to hay fever or other upper respiratory allergies.
Drinking alcohol while you take it can increase this drowsiness.