People who have taken this medication before and experienced an allergic reaction should avoid taking further<unk>  dosages. Hypersensitivity reactions include Stevens–Johnson syndrome, toxic skin eruptions, and erythema multiforme.
Efavirenz
Saquinavir
Zidovudine
Lamivudine
Entecavir
Amprenavir
Fosamprenavir
Telbivudine