Can you combine Zyrtec and dimetapp for a 2 year old child?

It is generally not recommended to combine Zyrtec (cetirizine) and Dimetapp (which contains diphenhydramine or brompheniramine) for a 2-year-old without consulting a healthcare provider. Both medications are antihistamines and can increase the risk of side effects, such as drowsiness or irritability. Always consult a pediatrician before giving multiple medications to young children to ensure safety and appropriateness.