Doctor insights on:
How Long Does An Allergy Pill Stay In Your Body
Depends: Multiple factors influence the duration of a medication in the body. Firstly, some medications are "short-acting" while others are "long-acting". Then, different bodies process medications faster than others. Finally, conditions which can affect removal (e.g. Kidney diseases) can cause a delay in elimination of the medication and therefore lingering effects. Typically 4-6h, 12h or 24h. ...Read moreSee 2 more doctor answers
Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more
1/2 to 1 hour: Some antihistamines require metabolism in the liver to be converted into the most effective form to block histamine. These antihistamines take at least 1 hour to become effective. However, some antihistamines like allegra, xyzal (levocetirizine) and Clarinex are already in the active form and begin to work as soon as they are absorbed which take about 30 minutes. ...Read moreSee 2 more doctor answers
I took a allergy pill zyrtek but it doesn't seem to be working. How long can do I have to wait to take some bendryl?
Should: Start working within the hour. But it is a low dose and sedating. You might try an Allegra or Claritin (loratadine) ( store brand ok) that is once a day and once in your system you won't be on a roller coaster of it working or not as long as you take it regularly. ...Read moreSee 1 more doctor answer
My husband has been braking out every morning with these red itchy spots on his body, he takes an allergy pill and they goaway the next tday thr back?
Detergent?: Possibly a detergent you are using to wash your sheets/pillowcases, etc. Could be the sheets themselves or a fiber used in the sheets. Do you have pets (vcats/dogs) that may climb on the bed when you're not there? All are possibhilities. You may want to have your husband checked by an allergist after you remove these possibilities as causes. ...Read more
Never: Most over-the counter allergy pills can cause some amount of sedation. Even "non-sedating antihistamines " such as Claritin (loratadine) or Allegra make some people drowsy. Since both alcohol and antihistamines can impair mental funtioning and reactions times, it is never advisable to mix these medications. ...Read moreSee 1 more doctor answer
Whenever: there are no contraindications to alcohol in using Zyrtec (cetirizine) (certrizine) which is a non-sedating antihistamine. Especially if you are truly talking about ONE beer. I always worry, thought, about people who need to know when they can drink something after drug X, or surgery Y. When people are that focussed on drinking, I think it may be an indicator of an underlying problem. Think about it. ...Read more
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