| Labetalol (3/0) | Lactulose (3/0) | Lamivudine (11/0) |
| Lamotrigine (6/0) | Lansoprazole (3/0) | Latanoprost (4/0) |
| Leflunomide (4/0) | Lepirudin (3/0) | Letrozole (4/0) |
| Leucovorin (3/0) | Leuprolide (2/0) | Levalbuterol (5/0) |
| Levamisole (1/0) | Levetiracetam (4/0) | Levobetaxolol (2/0) |
| Levobunolol (2/0) | Levobupivacaine (1/0) | Levocabastine (2/0) |
| Levocarnitine (1/0) | Levodopa (3/0) | Levofloxacin (1/0) |
| Levomethadyl Acetate (1/0) | Levonorgestrel (0/4) | Levorphanol (1/0) |
| Levothyroxine (8/0) | Lidocaine (3/0) | Lincomycin (0/0) |
| Lindane (2/0) | Linezolid (4/0) | Liothyronine (2/0) |
| Liotrix (1/0) | Lipoprotein Outer Surface A Vaccine (1/0) | Lisinopril (3/0) |
| Lithium (7/0) | Lodoxamide (2/0) | Lofexidine (1/0) |
| Lomefloxacin (2/0) | Lomustine (2/0) | Loperamide (4/0) |
| Lopinavir (0/0) | Loracarbef (2/0) | Loratadine (5/0) |
| Lorazepam (2/0) | Losartan (7/0) | Loteprednol (3/0) |
| Lovastatin (3/0) | Loxapine (3/0) | Lubiprostone (1/0) |
| Lymphocyte Immune Globulin (1/0) |