Prime
- LA-12
- labetalol
- LactiCare-HC
- Lactinex
- Lactulax
- lactulose
- Lactulose PSE
- Lady's thistle
- Lagol
- Lamictal
- Lamisal
- Lamisil AT
- lamivudine
- lamotrigine
- Lanacane
- Lanacort 9-1-1
- Laniazid
- Lanophyllin
- Lanoxicaps
- Lanoxin
- lansoprazole
- Lansoyl
- Lantus
- Lanvis
- Largactil
- Larodopa
- Lasix
- lavose
- Laxit
- l-dopa
- leflunomide
- Lemoderm
- Lente Iletin II
- leopard's bane
- lepirudin (rdna)
- Leritine
- Lescol
- letrozole
- leucovorin calcium
- Leukeran
- Leukine
- leuprolide
- Leustatin
- levalbuterol
- levamisole
- Levaquin
- Levate
- Levatol
- Levbid
- levetiracetam
- Levisticum officinale
- Levlen
- Levlite
- levobupivacaine
- levodopa
- Levo-Dromoran
- levofloxacin
- levonorgestrel
- levonorgestrel/ethinyl estradiol
- Levophed
- Levoprome
- Levorphan
- levorphanol
- Levo-T
- Levothroid
- levothyroxine
- Levoxyl
- Levsin
- Levsinex
- Levsin-PB Drops
- Levsin w/Phenobarbital
- Levulan Kerastick
- Lexapro
- Lexxel
- L-hyoscyamine
- Librax
- Libritabs
- Librium
- Licon
- Lida-Mantle-HC Cream
- Lidemol
- Lidex
- Lidex-E
- lidocaine
- lidocaine/prilocaine
- Lidoderm
- Lidoject
- LidoPen
- LIG
- Ligustilides
- Limbitrol DS 10-25
- lindane
- linezolid
- Lioresal
- liothyronine
- liotrix
- Lipitor
- Liposyn II
- Lipram
- Liqui-Cal
- Liquid Cal-600
- Liquid Pred
- Liquiprin
- lisinopril
- Listermint with Fluoride
- lithium
- Lithizine
- Lithobid
- Lithonate
- Lithostat
- Lithotabs
- Lo/Ovral
- Lobac
- LoCHOLEST
- Locoid
- Lodine
- Lodine XL
- Loestrin
- Loestrin 21 1/20
- Loestrin 21 1.5/30
- Lofibra
- Logen
- Lomanate
- lomefloxacin
- Lomotil
- lomustine
- long-acting corticosteroids
- Loniten
- Lonox
- loperamide
- Lopid
- lopinavir/ritonavir
- Lopresor
- Lopressor HCT
- Loprox
- Lopurin
- Lorabid
- loracarbef
- loratadine
- lorazepam
- Lorcet
- Lortab
- losartan
- Losec
- Losopan
- Lotensin
- Lotensin HCT
- Lotrel
- Lotrimin
- Lotrisone Topical
- Lotronex
- louisa
- lovastatin
- Lovenox
- low molecular weight heparins
- Lowsium
- Loxapac
- loxapine
- Loxitane
- Lozide
- Lozol
- L-PAM
- l-triiodothyronine
- Ludiomil
- Lufyllin
- Lugol's solution
- Luminal
- Lunelle
- Lunelle Monthly Contraceptive Injection
- Lupron
- Luride
- Luvox
- Luxiq
- Lyderm
- lymphocyte immune globulin
- Lyphocin
- Lysatec rt-PA
- Lysodren