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Allergy Shots

Allergy shots are injections of solutions containing tiny amounts of the substances you’re allergic to, such as pollen or dust mites. The amount of allergen in the solution is increased slightly each time you get a shot until you reach a certain level (called your maintenance level). Allergy shots are usually given once or twice weekly at first; then the time between the shots is gradually increased until they’re given once a month. The shots often continue for 3 to 5 years or longer. The purpose of allergy shots is to make you less sensitive to allergens, and many people find that this form of treatment relieves or greatly improves their allergy symptoms.

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Preparing for Your Shots

On days that you’re scheduled to have shots, wear short sleeves or sleeves that can be rolled up, and take all your regular medications. You can’t get your shot on any days that you have a fever or hives, or are wheezing.

Getting Your Shots

The nurse or doctor will measure the right amount of solution and inject it into the skin of your upper arm. Depending on how many things you’re allergic to, you may get one or several shots. You may feel a slight sting in your arm when you get the shot, and your arm may be a little sore for a few hours, but you should feel fine otherwise. You may have a small bump for a few hours where you received the shot. If the bump gets large or your arm swells, tell your doctor.

Make a Commitment

Allergy shots don’t work unless you get them regularly, according to the schedule your doctor provides for you. Before you begin getting shots, commit to your allergy therapy. Make arrangements with your doctor if you know you’ll have to miss any shots.

After Your Shots

After getting your allergy shots, you’ll probably need to sit in the waiting room for about 30 minutes. This is because allergy shots occasionally cause a reaction (anaphylaxis), which can be treated with an injection of a special medication. Signs of a reaction include:

  • Itching, especially on your palms or feet, or in your mouth

  • Breaking out in hives

  • Repeated sneezing

  • Tightness in your throat or chest or trouble breathing

If you notice any of these symptoms while you’re in the doctor’s office or during the rest of the day, tell your doctor immediately.

Date Last Reviewed: 7/9/2002
Date Last Modified: 7/9/2002