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Doctor insights on: Claritin Hives Relief

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How long does it take for Claritin (loratadine) to take effect on hives??

How long does it take for Claritin (loratadine) to take effect on hives??

3 days to reach peak: Claritin (loratadine) (loratidine) takes 3 days to reach a steady state, so it could take that long for it to work on hives. Other non-drowsy antihistamines are a better choice: Allegra (fexofenadine) reaches peak effect within 2 hours and Zyrtec (cetirizine) reaches peak effect in 1-2 hours. If you see no benefit at all within 5 hours of taking these, they probably will not work for you. ...Read more

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Dr. Ralph Wharton
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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Took 50mg loratadine/day for hives. Stopped because of suicidal thoughts (read this is a rare symtom) now i'm in a 4-day-long anxiety attack.Thoughts?

Took 50mg loratadine/day for hives. Stopped because of suicidal thoughts (read this is a rare symtom) now i'm in a 4-day-long anxiety attack.Thoughts?

Different medication: 50 mg of Loratadine is far and above the recommended dose. Suicidal thoughts are a rare side effect but on a dose that high, you may also experience sedation. There are many other medications that can be used to treat hives and some of them (like hydroxyzine, doxepin, or amitryptiline) can have some affect on anxiety too. Those tend to be sedating however. Please talk to your doctor about this. ...Read more

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I drink alcohol while on Claritin (loratadine) which I take regularly for chronic hives. Is that okay/safe?

I drink alcohol while on Claritin (loratadine) which I take regularly for chronic hives. Is that okay/safe?

Most likely, but....: Mixing Claritin (loratadine) with alcohol may or may not cause problems. generally claritin (loratadine) does not cause drowsiness, but people who develop drowsiness due to this drug are at an increased risk of experiencing negative effects due to such drug interaction; therefore they are advised to avoid drinking alcohol. ...Read more

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True allergy to benadryl (diphenhydramine). Can i take claritin? Are they different enough that it shouldn't give me the instant hives that Benadryl (diphenhydramine) does?

Antihistamines: Both Benadryl (diphenhydramine) and Claritin are antihistamines and both are given to treat hives. I would suggest consulting a board certified allergist to review your history of your reaction to benadryl, (diphenhydramine) i doubt your hives are because of it. ...Read more

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Will Claritin (loratadine) protect against drug allergies for a full 24hrs? Is it safe to use it if i've had hives from other, unrelated antihistamine pills?

Will Claritin (loratadine) protect against drug allergies for a full 24hrs? Is it safe to use it if i've had hives from other, unrelated antihistamine pills?

Safe but...: It may last that long but may not be potent enough to control your hives. You may need to up the dose to 4x daily. It is unusual however to develop hives from taking any kind of antihistamine and thus i would suggest that you consult an allergist to sort this out. ...Read more

Dr. Ashraf Abdel Azeem
506 doctors shared insights

Claritin (Definition)

Claritin is a non-sedating antihistamine which is a kind of antihistamine type drug (common ...Read more