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Allergy Medications (cont.)

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Medical Editor:

What are the drug interactions for allergy medications?

Antihistamines may interact with:

Other drugs that cause drowsiness, such as sleeping medications, narcotic pain medications, sedatives, muscle relaxants, antidepressants and seizure medications.

Drugs with anticholinergic activity such as amitryptiline and other tricyclic antidepressants, antipsychotics like chlorpromazine, certain drugs to prevent vomiting (prochlorperazine and promethazine.

Corticosteroids may interact with:

Drugs affecting metabolism of corticosteroids, such as ketoconazole (Nizoral, Xolegel, Extina, Ketoconazole Cream) and ritonavir (Kaletra Capsules, Kaletra Tablets, Norvir).

Leukotriene inhibitors may interact with:

Drugs that stimulate liver metabolism, such as phenytoin (Dilantin,) phenobarbital, and carbamazepine (Tegretol) – as well as the antibiotic Rifampin.

Oral decongestants may interact with:

Antidepressants, other cold or allergy medications, drugs used to treat migraines and high blood pressure.

Topical immunomodulators may interact with:

Certain antibiotics, antifungals, calcium channel blockers, and cimetidine (Tagamet).

Medically Reviewed by a Doctor on 10/28/2014


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