labetalol hydrochloride
lactulose
lamivudine (3TC)
lamivudine and zidovudine
lamotrigine
lansoprazole
latanoprost
leflunomide
letrozole
leucovorin calcium (citrovorum factor or folinic acid)
levalbuterol hydrochloride
levamisole hydrochloride
levetiracetam
levobunolol hydrochloride
levodopa
levodopa-carbidopa
levofloxacin
levonorgestrel implants
levothyroxine sodium (T4 or L-thyroxire sodium)
lidocaine (lignocaine)
lidocaine hydrochloride
linezolid
liothyronine sodium (T3)
liotrix
lisinopril
lithium carbonate
lithium citrate
lomefloxacin hydrochloride
lomustine (CCNU)
loperamide hydrochloride
lopinavir and ritonavir
loracarbef
loratadine
lorazepam
losartan potassium
lovastatin
loxapine hydrochloride
loxapine succinate
lymphocyte immune globulin