I have seasonal allergies. took a zyrtec (cetirizine) today but it's not working. can i take a second one? is there something else i can take too?

See ENT/Allergist: I self treated for my seasonal allergies for years. I was miserable. Eventually, I saw an ENT and an Allergist. That made all the difference. I am now in a regimen that works. In the interim, you could always try an inhaled steroid like fluticasone (brand name Flonase). Regardless, get help from a doctor. You'll be much happier.

If this is your firs: Do not take a second dose of Zyrtec. If needed. you could take Benadryl (diphenhydramine). But I would say be patient for the day or be seen by virtual consult or in person to determine what might be best treatment regimen for you.

Nasal steroid: 30 yo male with seasonal allergies on zyrtec. Best med for seasonal allergies is nasal steroid spray (Flonase, Nasacort, (triamcinolone) Rhinocort are OTC). Must use consistently (every day) and properly (point outwards towards the ear) for it to work. Avoidance of allergens is also important - remove clothing and shower immediately when coming inside home. See allergist and find out what you are allergic to.