Medications
Skin Testing
“Non-Sedating” Antihistamines:
Astemizole (Hismanal), Cetirizine (Zyrtec), Loratadine (Claritin), Fexofenadine (Allegra)
Withhold for 2 weeks before testing.
Antidepressants that have antihistamine effect:
Amitriptyline (Elavil), Clomipramine (Anafranil),Doxepin (Sinequan), Imipramine (Tofranil), Trimipramine (Surmontil), Amoxapine (Asendin), Desipramine, (Nurpramin), Nurtriptyline (Pamelor, Aventyl), Protriptyline (Vivactil), Maprotiline (Ludiomil), Mirtazapine (Remeron), Trazodone (Desyrel), Nefazadone (Serzone)
Withhold for 2 weeks before testing.
Miscellaneous Anti-Anxiety Agents:
Hydroxyzine (Vistaril, Atarax), Alprazolam (Xanax), Clonazepam(Klonopin)
Withhold for 1 weeks before testing.
Herbal Supplements:
Astragalus, Licorice, Green Tea, Milk Thistle, Saw Palmetto, St. John’s Wort, Feverfew
Withhold for 1 weeks before testing.
Antihistamines:
Diphenhydramine (Benadryl), Chlorpheniramine (Chlor-Trimeton), Brompheniramine (Dimetapp), Clemastine (Tavist, Antihist), Combination Drugs (Actifed, Drixoral, Trinalin), and Midol
Withhold for 2 weeks before testing.
Topical Steroid Anti-Inflammatories:
Creams, ointments, gels, solutions, lotions
Withhold morning of test
Histamine Blockers:
Cimetidine (Tagamet), Ranitidine (Zantac), Nizatidine (Axid), Famotidine (Pepcid)
Withhold morning of test
Leukotriene Receptor Agonists:
Montelukast (Singulair), Zileuton (Zyflo), Zafirlukast (Accolate)
Withhold the night before and the morning of test
Miscellaneous:
Cisapride (Propulsid), Metoclopramide (Reglan)
Prochlorperazine (Compazine)
Withhold morning of test
Withhold for 3 days
**Please check with your prescribing provider before discontinuing any medications.**
