Doctor insights on:
How many weeks does it take for claritin 10mg to work? How long should I give it a try before deciding to switch to a different antihistamine?
I have two different antihistamines...One is hydroxyzine and the other is is diphenhydramine..Which one will cause me to gain weight?
Itching in different body parts unrelated to food or indoor/outdoor areas. This might sit for few hours and sometimes I take antihistamines. ?
If I have an allergy to one antihistamine, is it more likely to also be allergic to another? Even though they r different chemicals?
Is it possible to be allergic to all antihistamines (hives)? I see hives 90mins after taking 3 different antihit's on different days.
35 yr-old with round-shaped skin lesions that come and go for 14 years, unresponsive to antifungals, and negative for "fungal, viral, or yeast".....?
Urticaria (hives): Typical description of chronic urticaria refractory to antihistamines. An Allergist will get some bloodwork to rule out some potential underlying causes and then prescribe treatment. There are several options and relief can be obtained in no time. ...Read moreSee 2 more doctor answers
Yes but...: Antihistamines can be taking twice a day safely if required but there are other treatments available. If by allergic reaction you are referring to seasonal allergies, the gold-standard therapy is daily nasal steroid sprays and/or antihistamine nasal sprays. Nasal saline rinses, avoidance measures, and if refractory to treatment, allergy shots can also be helpful. See an Allergist for more details. ...Read more
Antihistamines: Safety of high dose medications is often unknown. Our experience comes from case reports of persons who intentionally or accidentally consumed unusually excessive quantities. When Claritin was first investigated, safety studies were done at 40 mg (4 times the current recommended dose). We take 10 mg because effectiveness is not significantly different between 10 mg and 40mg. ...Read moreSee 1 more doctor answer
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