There is a possibility of the drug interaction amongst cetirizine and theophylline. Theophylline (Theo-24) is really a drug that some people with bronchial asthma and also other lung challenges get. For anyone who is using the liquid type of this medication, measure the dose meticulously using a Distinctive measuring product/spoon. https://deanfdcxr.alltdesign.com/fascination-about-zyrtec-49966678