Diarrhea and coughing ... boiling water may help with seasonal allergy symptoms. Limited research has demonstrated that some essential oils can ease sinus inflammation. Zyrtec is a second ...

“While antihistamines [like Zyrtec and Claritin] can help with sneezing, itching and runny nose, first line therapy for relief of nasal congestion includes a steroid or antihistamine nose spray.