Medications that Interfere with Allergy Testing
**Please do not discontinue any prescription medications without consulting your prescribing physician**
ANTIHISTAMINES/ALLERGY/COLD & SINUS/ OTC SLEEP AIDS: Hold the following medications for 7 days prior to testing. Many OTC Allergy/Cold & Sinus medications contain antihistamines and should be avoided.
- Benadryl (diphenhydramine)
- Allegra (fexofenadine)
- Nyquil
- Phenergan (promethazine)
- Astelin(azelastine) nasal spray
- Pataday/Patanol(olopatadine) eye drops
- Claritin (loratadine)
- Tylenol/Advil PM
- Atarax (hydroxyzine)
- Aller-Clor(chlorpheniramine)
- Patanase(olopatadine) nasal spray
- Dimetapp
- Zyrtec (cetirizine)
- Actifed Sinus Day
- Antivert (meclizine)
- Xyzal (levocetirizine dihydrochloride)
*Sudafed, Flonase (fluticasone), budesonide nasal spray and plain Mucinex are OK to continue prior to testing*
TRICYCLIC ANTIDEPRESSANTS: Hold the following medications for 10 days prior to testing.
- Doxepin
- Desipramine
- Imipramine
- Nortriptyline
- Trimipramine
- Colmipramine
BENZODIAZEPINES: Hold for 7 days prior to testing
- Klonopin(clonazepam)
- Midazolam
- Valium (diazepam)
- Xanax (alprazolam)
- Ativan (lorazepam)
H2 ANTAGONISTS/ ACID REDUCERS: Hold for 7 days prior to testing
- Pepcid(famotidine)
- Vantin
- Axid(nizatidine)
- Zantac (ranitidine)
- Tagamet (cimetidine)
*Prilosec (omeprazole), Protonix (pantoprazole) and Nexium (esomeprazole) are OK to continue prior to testing*