- Levodopa and Benserazide
- Levodopa and Carbidopa
- Levofloxacin
- Levofloxacin Injection
- Levofloxacin Oral
- Levomethadyl
- Levora 0.15/30
- Levorphanol Oral
- Levothroid
- Levothyroxine
- Levoxyl
- Levsin
- Levsin/SL
- Levsinex Timecaps
- Levulan Kerastick
- Lexapro
- Lexiva
- Lexxel
- Lexxel containing Enalapril Maleate and Felodipine
- Lexxel containing Felodipine and Enalapril Maleate
- Librax
- Libritabs
- Librium
- Licetrol
- Licon
- Lidemol
- Lidex
- Lidex-E
- Lidocaine
- Lidocaine Transdermal
- Lidocaine Viscous
- Lidocaine and Prilocaine
- Lidoderm
- Lidoject-1
| - Lidoject-2
- Lidox
- Lidoxide
- Life Antacid
- Life Antacid Plus
- Limbitrol
- Limbitrol (combination with amitriptyline)
- Limbitrol DS
- Limbitrol DS containing amitriptyline and chlordiazepoxide
- Limbitrol containing amitriptyline and chlordiazepoxide
- Lincocin
- Lincomycin
- Lincorex
- Lindane
- Linezolid
- Lioresal
- Lioresal Intrathecal
- Liothyronine
- Lipancreatin
- Lipidil Micro
- Lipidil Supra
- Lipisorb
- Lipitor
- Liposomal doxorubicin
- Liposyn
- Liposyn II
- Liposyn III
- Lipram 4500
- Lipram-CR10
- Lipram-CR20
- Lipram-PN10
- Lipram-PN16
- Lipram-PN20
| - Lipram-UL12
- Lipram-UL18
- Lipram-UL20
- Liquaemin
- Liqui-Char
- Liqui-Char with Sorbitol
- Liqui-Doss
- Liqui-E
- Liquid Cal-600
- Liquid Pred
- Liquid-Cal
- Liquimat Light
- Liquimat Medium
- Liquiprin Children's Elixir
- Liquiprin Infants' Drops
- Liquor Carbonis Detergens
- Lisinopril
- Lisinopril and Hydrochlorothiazide
- Listerex Golden Scrub Lotion
- Listerex Herbal Scrub Lotion
- Lite Pred
- Lithane
- Lithium
- Lithizine
- Lithobid
- Lithonate
- Lithotabs
- Livostin
- Lo-Trol
- Lo/Ovral
- Locacorten
- Locoid
- Lodine
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