Hydroxyurea 628 Hydroxyzine 629 Hyoscyamine 632 Hypertonic Saline( 7 % to 7.5 %) 633 Ifosfamide 635 Imepitoin 637 Imidacloprid, Systemic 639 Imidapril 640 Imidocarb 642 Imipenem / Cilastatin Sodium 644 Imipramine 646 Immune Globulin( Human), Intravenous 649 Insulin, Aspart 651 Insulin, Detemir 655 Insulin, Glargine 658 Insulin, Lente 662 Insulin, Lispro 666 Insulin, NPH 670 Insulin, Protamine Zinc 674 Insulin, Regular( Crystalline Zinc) 677 Interferon Alfa, Human Recombinant 681 Interferon Omega, Feline Origin 683 Iodide( Potassium-, Sodium-) 685 Iohexol 687 Ipratropium 689 Irbesartan 690 Iron Dextran 692 Isoflupredone 693 Isoflurane 695 Isoniazid( INH) 698 Isoproterenol 700 Isotretinoin 701 Isoxsuprine 703 Itraconazole 704 Ivermectin 709 Ivermectin / Clorsulon 714 Kaolin / Pectin 715 Ketamine 717 Ketoconazole, Systemic 725 Ketoprofen 729 Ketorolac 732 L-Theanine 733 Lactulose 735 Lanthanum 736 Leflunomide 738 Leucovorin 740 Leuprolide 741
Levamisole 743 Levetiracetam 746 Levothyroxine 749 Lidocaine, Local Anesthetic 752 Lidocaine( Intravenous; Systemic) 756 Lincomycin 760 Linezolid 762 Liothyronine 764 Lipid Emulsion, Intravenous( ILE) 766 Lisinopril 769 Lokivetmab 771 Lomustine 773 Loperamide 775 Loratadine 777 Lorazepam 778 Losartan 781 Lotilaner 783 Lufenuron / Lufenuron Combination Products 785 Lysine 788 Magnesium Hydroxide 789 Magnesium, IV 791 Mannitol 793 Marbofloxacin 796 Maropitant 799 Mavacoxib 802 Mechlorethamine 804 Meclizine 805 Medetomidine 807 Medetomidine / Vatinoxan 811 Medium Chain Triglycerides;( MCT) Oil 814 Medroxyprogesterone 815 Megestrol 817 Meglumine Antimoniate 819 Melarsomine 821 Melatonin 823 Meloxicam 825 Melphalan 829 Meperidine 831 Mepivacaine 834 Meropenem 837 Metergoline 839 Metformin 840 Methadone 842 Methazolamide 846 Methenamine 848 Methimazole 849 Methionine 852