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What should I know before taking allergy tablets?

Donna Hill Howes, RN
Family Practitioner

The first allergy tablet must be taken at your doctor's office in case you have an allergic reaction. You will need to wait there for 30 minutes after taking the tablet. You will also get a prescription for an epinephrine kit for emergency use at home.

Oralair should be started 4 months before the expected start of grass pollen season. Ragwitek and Grastek should be started at least 3 months before the expected start of ragweed and pollen seasons. All are continued throughout their pollen seasons.

If you are 65 or older, you should not take allergy tablets.

Short ragweed pollen extract tablets should not be taken by children.

Arrhythmia, high blood pressure, and poor lung function can lower the chances of survival if you have a serious reaction to an allergy tablet.

If you have severe or poorly controlled asthma, you should not take allergy tablets.

Unstable angina or a recent heart attack lowers your chances of survival if you have a serious reaction to an allergy tablet.

If you have had an allergic reaction that interfered with breathing, you should not take allergy tablets.

If you have eosinophilic esophagitis, you should not take allergy tablets.

Allergy tablets may not be a good option for you if you are pregnant, planning to become pregnant, or may be pregnant. It is not known if they are safe for pregnant women.

If you are breastfeeding, allergy tablets may not be a good option for you. It is not known if they can be passed into breast milk.

This answer was adapted from Sharecare's award-winning AskMD app. Start a consultation now to find out what's causing your symptoms, learn how to manage a condition, or find a doctor.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.