I have an appointment with my allergist on Tuesday, and they requested that no medications with antihistamines be taken for at least 3-7 days prior to appointment. This could include cold medications, sleeping pills, muscle relaxers, antidepressants, motion sickness medications, and of course allergy medications.
Here is the list of medications they said to avoid:
actifed, allegra, antivert, atarax (hydroxyzine), atrohist, benadryl (diphenhydramine), bromfed, chlor-trimeton (CTM) (Chlorpheniramine), claritin, comhist, contact, deconamine, demazine repetabs, dimetane, dimetapp, disophrol, doxepin, dristan, drizoral, hismanol, histalet forte, isoclor, naldecon, novafed a, novahistine, optimine, omade, pediactien (cyproheptadine), phenergan, poloramine, pyrivenzamine (PBZ), rondec, rutuss 2, seldane, tacaryl, tavist, tedrin, triaminic, trinalin, vistaril, zyrtec (cetirizine).
Wow! That was a lot more typing than I thought it would be. <img src="i/expressions/face-icon-small-tongue.gif" border="0">