Doctor insights on:
How Long Should It Take For An Allergy Pill To Work
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
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
Timing: Antihistamines work by blocking histamine receptors in your body. If the receptors are all full of histamine already (reaction has occurred), then there is nowhere for them to go and it will not make a difference in allergy symptoms. If you take them before exposure to allergens they can block the receptors and you will have less symptoms. ...Read moreSee 1 more doctor answer
If i took an allergy pill(extra strength 1aday) at 2pm yesterday, it is 7:00 am and I am needing another, can I take now? At work have allergy to cats.
Depends: It is occasionally ok to take extra dose of antihistamine but if you are taking 24 hour antihistamine decongestant combination it would be too much decongestant. Check with your doctor for other medicines that might relieve your symptoms. If you have unavoidable cat exposure you may benefit from a visit to the allergist. ...Read more
Do over-the-counter allergy medicines work for oral allergy syndrome if you take a pill before eating?
No: The only thing that works for oas is allergy shots to reduce your sensitivity. I don't know exactly why that is, but i've never met a single patient who had found any medication that prevented oas symptoms. ...Read more
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
Taking pristiq (desvenlafaxine) for hot flashes and it works great. Have noticed side effects if i take cold pills or allergy medication. What can I take for allergies?
Prescrption nose spy: You'll need prescription nose spray.Get a more detailed answer ›
Please tell me how long do I take medicine for a sinus infection and can I take it along with 24 hour allergy pill?
If you have actual: Sinus infection then you would usually be prescribed antibiotics and would take the complete course of medication. ...Read more
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