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 more
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 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?
You did not describe any symptoms or what you are experiencing and what you expect.
It is best on health tap to be specific and direct. ...Read more
I took an allergy pill and I think I am having a allergic reaction and I was wondering how long it will last. The reason why I think that is I got the?
Please re-submit: Hard to know if the reaction is to the allergy pill or something else and the remainder of the question is cut-off. Thanks for using HealthTap! ...Read more
2 hours: Singular can begin having a positive effect within 2 hours. ...Read more
25-45 min: It usually takes from 25 to 45 for a pill to start to make effect has to be dissolved and absorb into the blood stream to make effect. ...Read more
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 more
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
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
Penicillin allergy, after 8 pills: got hives, especially fastidious on the gluteus (3 days). I started Benadryl (diphenhydramine) yesterday. How long will hives last?
If I was. Allergic to a pill how long after taking it would I know I took norco (hydrocodone and acetaminophen) but I've took vicidion and lortab before what's the chance of allergy?
Minutes to hours: If you are allergic to a drug, the reaction usually occurs within minutes and 2 hours. However if the reaction is a rash, it may take several days. Norco (hydrocodone and acetaminophen) is not a highly allergenic drug although you may get side effects from the opiate it contains. ...Read more
Itchy (under arms) 3weeks, how long does arithromycin reaction take to go away? Tried allergy pills, creams (hydrocortisone, zinc oxide creams).What now?
24 hours or less: Claritin, and its generic form - Loratadine - generally lasts about 17 hours. Thus, taking it in the morning (which is safe to do as it is non-drowsy) should get you through the majority of the day. If it does not, talk to your doctor about adding a topical nasal steroid spray. ...Read more
If I tough out my allergies to my dog for long enough will my body eventually get used to it (like with allergy shots)?
Up to how long can a body reactic to a food allergy? Immediately upon contact or can there be a reaction as the food contiues to digest?
Varies: Type-i, ige-mediate, food-induced reactions can occur within seconds of an exposure. Type-iv or cell-mediated food reactions, although usually less clinically severe, can persist for over 24 hours. ...Read more
A long time: The half life is 8 hours. Assuming that after 4 half lives it is eassentially gone it would take upwards of 32 hours to be eliminated. ...Read more
Sir I am 21 and have dyspnea from 1 month and 20 days and doctor say I have allergy sir can you tell me how long allergy can live in my body?
Allergy?: Allergy alone doesn't fully explain your symptoms. Perhaps your doctor is saying you have asthma (which is often triggered by allergy). This is important because asthma (and allergy) are both very treatable conditions. Chest xray and breathing tests (spirometry) can make this diagnosis and rule out other causes like pneumonia. ...Read more
Sir I am 21 years old and feel dyspnea from one month and 20 days my doctor say I have allergy so please tell me how long this allergy remain in body?
For 2 weeks I have been itching all over my body with a prickle burn no rash, how long does it last allergy tablets don't work I do take iron tablets
Hold all medicines: To start with, although iron preparations usually don't cause allergy, could be a preservative or a non active ingredient, watch what you eat as well, can use a different antihistaminic, above all you might be having a dry skin, use a cream soap, moisturize your whole body right after bathing, every day or every other day, if all don't work, see your doctor, goodluck. ...Read more
26 year-old woman is unable to stop Nordette (ethinyl estradiol and levonorgestrel) birth control pills after 8 yrs of use, due to heavy vaginal bleeding upon Nordette (ethinyl estradiol and levonorgestrel) discontinuation.....?
What are goals?: The answer depends on your long term goals. If you do not want more children then an endometrial ablation is a good option. Assuming you do want more children then other options can be considered. Testing for PCOS and hypothyroidism could be done. Since you are missing periods followed by heavy bleeding PCOS seems likely. A sonohystogram should be done to see if a polyp or submucosal fibroid is present. If present then these can be surgically removed as an outpatient. If pregnancy is desired later on but not now a Mirena (levonorgestrel) IUD could be a great option. This often stops bleeding. If you are satisfied with the pill you could just continue ...Read more
The one that works: The most effective one is the one that works. All of them are good, but not all of them work for everyone, just have to try and see. Try a 24 hour allergy medicine and take daily for allergies. ...Read more
Most new generation antihistamines (allergy pills) such as allegra, zyrtec, claritin, etc can be taken once or twice a day meaning their good effects should last 12 to 24 hours. Older antihistamines like Benadryl (diphenhydramine) are taken up to 4 times a day meaning the good effect may last only 4 to 6 hours (and make you sleepy!)
an allergist can assist in finding the right treatment plan. ...Read more
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