- Penicillins (definite)
- anticholinergic (possible) such as
- Antidiphenhydramine (Benadryl, Tylenol PM, Advil PM, Unisom SleepGels)
- brompheniramine (Dimetapp)
- dimenhydrinate (Dramamine)
- doxylamine (Unisom SleepTabs)
- atropine (Atropen)
- belladonna alkaloids
- benztropine mesylate (Cogentin)
-
- clidinium
- cyclopentolate (Cyclogyl)
- darifenacin (Enablex)
- dicylomine
- fesoterodine (Toviaz)
- flavoxate (Urispas)
- glycopyrrolate
- homatropine hydrobromide
- hyoscyamine (Levsinex)
- ipratropium (Atrovent)
- orphenadrine
- oxybutynin (Ditropan XL)
- propantheline (Pro-banthine)
- scopolamine
- methscopolamine
- solifenacin (VESIcare)
- tiotropium (Spiriva)
- tolterodine (Detrol)
- trihexphenidyl
- trospium