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Doctor insights on: Antihistamine For Hives

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What is maximum dosage of antihistamine for hives, 10 mg. is not providing relief after 1 mon.

What is maximum dosage of antihistamine for hives, 10 mg. is not providing relief after 1 mon.

Can increase dose: You can increase the dose of a non-sedating antihistamine like cetirizine to 10mg twice a day if need be. Dosing can be increased even more in some situations. You can also consider adding H2 blockers. Talk to your Allergist about additional treatment options to get better control of hives. ...Read more

Dr. Eric Weisman
3 doctors shared insights

Hives (Definition)

Also known as urticaria, hives are an outbreak of red bumps or wheals that appear quickly after exposure to certain allergens (foods, medications, other substances). Hives vary in size, are itchy, can burn, and can last for up to ...Read more


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When should I stop taking ranitidine and an antihistamine when my hives are gone?

When should I stop taking ranitidine and an antihistamine when my hives are gone?

Ask your doctor: Typically antihistamines including h2 anti- histamines such as ranitidine are gradually tapered off after roughly a week of being hive free. It is best to consult with your prescribing physician first, since every case of hives can be different. ...Read more

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Is it possible to be allergic to all antihistamines (hives)? I see hives 90mins after taking 3 different antihit's on different days.

Is it possible to be allergic to all antihistamines (hives)? I see hives 90mins after taking 3 different antihit's on different days.

See a dermatologist: Why taking antihistamine? When you see the dr be prepared to name all antihistamines tried. Exact names. It is possible but very unlikely to get hives from antihistamines: they are used to stop hives. ...Read more

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When i take antihistamine pills for hives, i get more itchy right after taking the pills before they kick in a few hrs later. am i allergic to pills?

When i take antihistamine pills for hives, i get more itchy right after taking the pills before they kick in a few hrs later. am i allergic to pills?

Be specific: You fail to indicate WHICH antihistamine. All antihistamines need time to see effect. Some are more effective than others. What type of hives, what specific trigger? Allergy to antihistamine is possible but not likely. Vague itching soon after a dose is not a good reason to suspect allergy. ...Read more

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When i take oral antihistamines i get hives over my entire body. Is it possible to be allergic to antihistamines? What can be taken instead?

Unlikely: Each antihistamine is unique, so it is unlikely that you would be allergic to multiple antihistamines. I had one patient who had hives to an antihistamine, and it turned out to be an allergy to a dye. You should consult with someone familiar with these medications and medication reactions in general, such as an allergist. ...Read more

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What antihistamine gets rid of hives but doesn't make you tired?

What antihistamine gets rid of hives but doesn't make you tired?

Try selective H1: Of the antihistamines, Benadryl (diphenhydramine) is the most effective, but also causes the most sedation. Some of the more selective h1 agents (eg. Claritin, Allegra or zyrtec can help). Note, zyrtec is probably a little bit more effective, but also has a sedation rate of 12%. ...Read more

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Don't understand how antihistamines work for chronic hives that is due to thyroid issues and not allergies?

Chronic Urticaria CU: CU can be associated with various autoimmune disorders. Even in the absence of hypo- or hyperthyroidism, patients with thyroid autoantibodies are often poorly responsive to standard therapies and have more persistent disease. Studies have examined the use of thyroid supplementation in the treatment of CU, with mixed results. Best treatment for this condition is daily antihistamines. See Allergist. ...Read more

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Dr. Paul Carter
601 doctors shared insights

Antihistamine (Definition)

Sedating and non-sedating antihistamines prevent and treat allergic reactions, and are ...Read more