Found this list from the book surviving schizophrenia by E. Fuller Torrey. [1] I thought it might be useful for people using this forum.
abacavir (Ziagen)
acyclovir (Zovirax)
amantadine (Symmetrel)
azithromycin (Zithromax)
baclofen (Kemstro)
bupropion (Wellbutrin)
caffeine
chlorambucil (Leukeran)
chloroquine (Aralen)
clonidine (Catapres)
cyclobenzaprine (Flexeril)
cycloserine (Seromycin)
dapsone
DEET (Off)
dextromethorphan (Robitussin)
digoxin (Lanoxin)
disopyramide (Norpace)
disulfiram (Antabuse)
dronabinol (Marinol)
efavirenz (Sustiva)
ganciclovir (Cytovene)
ifosfamide (Ifex)
interleukin-2 (Proleukin)
isoniazid
levodopa (Sinemet)
lidocaine (Xylocaine)
mefloquine (Lariam)
methyldopa
methylphenidate (Ritalin)
metronidazole (Flagyl)
modafinil (Provigil)
nevirapine (Viramune)
oseltamivir (Tamiflu)
propafenone (Rythmol)
pseudoephedrine (Sudafed)
quinidine
ramelteon (Rozerem)
selegiline (Eldepryl)
sibutramine (Meridia)
sildenafil (Viagra)
sodium oxybate (Xyrem)
tizanidine (Zanaflex)
trazodone
trimethoprim,
sulfamethoxazole (Bactrim)
valganciclovir (Valcyte)
vincristine
voriconazole (Vfend)
zolpidem (Ambien)
[1] http://www.amazon.com/Surviving-Schizophrenia-6th-Family-Manual/dp/0062268856/