>Huh. I never knew antihistamines would prevent that. Good to know. Allegra would work also it’s a third generation antihistamine, Claritin and Zyrtec are second and Benadryl is first. Pepcid is also a first generation. I don’t know the doses for Claritin, Zyrtec or Allegra but I’d imagine prescription strength taken as prescribed would be my first course of action, then would up it from there. The doctor who wrote about a small study on Pepcid said 100mg but never specified whether it was once a day or every 8 hours. Pepcid works as an antihistamine and also helps block ace 2 binding of the spike protein. When my relative has an allergic reaction it’s an Epi-pen, ER then home and takes Benadryl and 50mg of Pepcid every 8 hours as per the doctor for a few days. All you have to do is prevent the cytokine storm and covid isn’t deadly, the same with the flu unless you get pneumonia but this helps prevent that and you can toss in sn antibiotic if need be. Claritin won’t prevent it but can keep it from getting severe.