My Mon has been suffering with severe itching all over her body, especially in and around nose. Just saw a dermatologist who had her take 4 at once. I am afraid that this was too much. She is on high blood meds. and is a type 2 diabetic which he was aware of. I am worried, he also told her that she could take up to 32 a day due to her weight which is 184 lbs. I am referring to zyrtec tablets, non chewable.