Doctor insights on:
How many weeks does it take for claritin (loratadine) 10mg to work? How long should I give it a try before deciding to switch to a different antihistamine?
A few hours: Claritin (loratadine) should start working within a couple of hours. If it doesn't not help at all, then switching to another won't do you much good. If it does help somewhat, then you may try the other alternatives which may possess more antihistamine effect than Claritin (loratadine). ...Read more
I have two different antihistamines...One is hydroxyzine and the other is is diphenhydramine..Which one will cause me to gain weight?
Why are the mg dosage of antihistamines different? Allegra is 180mg , Claritin (loratadine) is 5mg , and zyrtec is 10mg.
If I have an allergy to one antihistamine, is it more likely to also be allergic to another? Even though they r different chemicals?
Itching in different body parts unrelated to food or indoor/outdoor areas. This might sit for few hours and sometimes I take antihistamines. ?
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
I gave expired antihistamine syrup to my 30 months old son incidentally...Is it dangerous?What s the side effect on him?
Expired drugs: There should be no side effects as expiration is usually based on loss of drug effectiveness. Drug companies err on the side of shortening times to expiration. Actually many drugs are effective long after expiration dates. Expired drugs are commonly used effectively by volunteer organizations when no other drugs are available. Relax! ...Read moreSee 1 more doctor answer