Drug	Incidence
Donepezil (Aricept)	Infrequent
Indinavir (Crixivan)	Infrequent
Saquinavir (Fortovase, Invirase)	Less than 2 percent
Zalcitabine (Hivid)	Less than 1 percent
Cyclosporine (Neoral, Sandimmune)	Rare
Pegaspargase (Oncaspar)	1 to 5 percent
Rituximab (Rituxan)	Among most frequent
Interferon alfa-2a (Roferon)	8 percent
Daclizumab (Zenapax)	2 to 5 percent