Preparing questions in advance can help patients to have more meaningful discussions with their physician regarding their conditions and treatments. Patients may wish to ask their doctor the following questions related to antihistamines:

1. Are antihistamines safe for me to take?
   
   
2. What is your opinion about using antihistamines to treat cold symptoms?
   
   
3. How and when should I take this drug?
   
   
4. What side effects may I develop?
   
   
5. For what side effects should I seek medical attention?
   
   
6. How long will I have to wait before the drug to takes effect?
   
   
7. How long will I have to take this drug?
   
   
8. Are there medications, nutritional supplements or herbal medications I should avoid while taking this drug?
   
   
9. How will I know if the drug is working?
   
   
10. What are other possible treatments if the drug does not work?