- Influenza Virus Vaccine
- Inhibace
- Innohep
- Inspra
- Insta-Char Pediatric in an Aqueous Base with Cherry Flavor
- Insta-Char Pediatric with Cherry Flavor in a Sorbitol Base
- Insta-Char in an Aqueous Base
- Insta-Char in an Aqueous Base with Cherry Flavor
- Insta-Char with Cherry Flavor in a Sorbitol Base
- Instantine
- Insulin
- Insulin Aspart
- Insulin Aspart Injection
- Insulin Glargine Injection
- Insulin Glulisine
- Insulin Lispro
- Insulin Lispro Injection
- Intal
- Intal Inhaler
- Intal Syncroner
- Intercon 0.5/35
- Intercon 1/35
- Intercon 1/50
- Interferon Alfa-2a and Alfa-2b Injection
- Interferon Alfacon-1
- Interferon Alfacon-1 Injection
- Interferon Beta-1b Injection
- Interferon Gamma-1b Injection
- Interferon beta-1a Intramuscular Injection
- Interferon beta-1a Subcutaneous Injection
- Interferon, Beta-1a
- Interferon, Beta-1b
- Interferon, Gamma
- Interferons, Alpha
| - Interleukin-2
- Intralipid
- Introlan
- Introlite
- Intron A
- Intron A (alfa-2b)
- Invanz
- Inversine
- Invirase
- Iobenguane, Radioiodinated
- Iobid DM
- Iodal HD
- Iodine, Strong
- Iodopen
- Iodoquinol
- Iofed
- Iofed PD
- Ionamin
- Ionax Astringent Skin Cleanser Topical Solution
- Ionil Plus Shampoo
- Ionil Shampoo
- Ionil T Plus
- Iopidine
- Iosal II
- Iotussin HC
- Ipol
- Ipratropium
- Ipratropium Bromide Oral Inhalation
- Ipratropium and Albuterol
- Irbesartan
- Irbesartan and Hydrochlorothiazide
- Ircon
- Iressa
| - Irinotecan
- Iron Supplements
- Ismelin
- Iso-Acetazone
- IsoSource VHN
- Isobutal
- Isobutyl
- Isocaine
- Isocaine 2%
- Isocaine 3%
- Isocal
- Isocal HN
- Isocarboxazid
- Isocet
- Isocom
- Isoetharine Oral Inhalation
- Isolan
- Isolin
- Isollyl
- Isollyl Improved
- Isollyl with Codeine
- Isometheptene Mucate, Dichloralphenazone, and Acetaminophen
- Isometheptene, Dichloralphenazone, and Acetaminophen
- Isomil
- Isomil SF
- Isoniazid
- Isonipecaine
- Isopap
- Isophosphamide
- Isoproterenol Oral Inhalation
- Isoptin
- Isoptin SR
- Isopto Alkaline
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