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Questions tagged [antihistamines]

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25 views

Are highly potent antihistamines create tolerance long term? [duplicate]

I have gathered that antihistamines can result in dependency. Assuming you don't mind the other side effects is it feasible to take them long term at the same dosage? For example will a tolerance ...
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1answer
86 views

What increases Histamine in the body?

What increases histamine in the human body, and are there oral forms of intake to stimulate this increase?
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0answers
23 views

Why do I have bad breath after taking certain medicines?

So yesterday I had a serious allergic reaction. My nose was watering, my eyes were hurting and all that stuff that happens in allergy. To combat the symptoms I took a pill of cetirizine and now I have ...
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1answer
307 views

Taking Benadryl after Claritin

I take Claritin in the mornings. Right now in the evening my eyes are itchy and I'd like to take Benadryl. Is this a good idea or not? Thanks!
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1answer
1k views

Long term effects of an allergy pill? Loratadine

Are there any studies/effects of long term use of an allergy pill? I use Loratadine to help control my environmental allergies but I'm concerned about it being an every-day thing. Am I facing any ...
8
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1answer
3k views

Does Benadryl (=diphenhydramine) lead to tolerance? Can I use it to help with sleep?

I am an insomniac and all the sleep medications that I've been prescribed have eventually had no effect on me -- I built a tolerance to them. It's a dangerous thing because I don't want to take lots ...
4
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3answers
118 views

How does the process of receptor blocking impact the human cells in context of antihistamine drugs (irreversible antagonist)?

I have problem in understanding what it really means that antagonist is irreversible. I have an allergy and I stopped to take some drugs because of side effects. I tried to predict how long does it ...
6
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1answer
21k views

Do Benadryl and Loratadine contain the same active ingredient?

When I get bad Hay Fever, I take either Benadryl or Loratadine. I am wondering what the active ingredients are in these, and Is it okay to take them both together (or would that be over dosing)? On ...