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Doctor insights on: How Long Effects Last After Allergy Shots

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What are the long term effects from allergy shots?

What are the long term effects from allergy shots?

Yes: About 2/3 of people who do immunotherapy of an appropriate, effective dose will have long term relief from their allergy symptoms even after they have finished 3-5 years of the shots. In some cases this relief is permanent, in others symptoms will eventually return, but may be years later. ...Read more

Dr. John Chiu
2,491 doctors shared insights

Allergies (Definition)

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


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How long and how often should I receive allergy shots?

How long and how often should I receive allergy shots?

1-6 months: Allergy shots help animal and pollen allergy sufferers the most to reduce their misery. Once a maintenance dose is reach (a process that can taken 1-6 months), injections are spaced out to a 2-4 week interval as part of a maintenance plan. Injections that do not seem to be effective after a year may be discontinued. Injections may be continued for 3-5 years or longer if they are effective. ...Read more

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How long after starting them can I stop getting allergy shots?

How long after starting them can I stop getting allergy shots?

Are they working?: You should see improvement with allergy injections a few months after reaching your maximal tolerated dose. If you're not better review the program with your allergist. Perhaps you should stop? After 4-5 years of successful once-monthly immunotherapy patients may try to stop. About half return in 6-8 weeks wishing to resume. 25% need to restart after 5-7 years. 25% never need another injection. ...Read more

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How long does it take before you see relief with allergy shots?

How long does it take before you see relief with allergy shots?

Months: The reason that allergy shot regimens take years to complete is because they have to go up on the dosage of allergen very slowly. The results are usually very good but it takes months for you to notice a significant difference. Continue taking your oral allergy medications as long as the allergist recommends it. ...Read more

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If i start allergy shots how long does it usually take before allergy symptoms significantly lessen?

If i start allergy shots how long does it usually take before allergy symptoms significantly lessen?

Allergy shots: Depending on the protocol that you and your doctor are following it takes on average 3 to 4 months, but you should ask your doctor this question, they know the particulars of your treatment. ...Read more

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If i tough out my allergies to my dog for long enough will my body eventually get used to it (like with allergy shots)?

If i tough out my allergies to my dog for long enough will my body eventually get used to it (like with allergy shots)?

Allergy shots: Do help. But. , first get evaluated and discuss this with your allergist to find out if you are truly allergic to dogs. You could have other issues and be sensitive to other stuff, too. ...Read more

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How long will it take atopic dermatitis to get better when taking allergy shots ?

How long will it take atopic dermatitis to get better when taking allergy shots ?

Variable: Atopic dermatitis, eczema, may or may not be of allergic origin. If it due to allergies allergy shots may help. You should see an improvement within six months to two years. ...Read more

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My 6 yr old son has IgE level of 3090 but has only shown a mild case of hives 4 times in the last 4 yrs. Is allergy shots only solution?

My 6 yr old son has IgE level of 3090 but has only shown a mild case of hives 4 times in the last 4 yrs. Is allergy shots only solution?

Depends on trigger: If the episodes of hives were caused by an allergen found on allergy testing (cat, for example), then allergy shots will reduce his sensitivity to that allergen. If the cause is not known, then most allergists recommend a daily antihistamine like Cetirizine to prevent future episodes. ...Read more

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