Davis's Drug Guide
- Ibavyr
- Ibrance
- Iclusig
- Idamycin PFS
- Idhifa
- Ifex
- IL-2
- Ilaris
- Ilumya
- imber
- Imbruvica
- Imdur
- Imfinzi
- Imitrex
- Imitrex DF
- Imitrex STATdose
- Imodium
- Imodium A-D
- Imovane
- Impavido
- Impril
- Imuran
- Inapsine
- Incivek
- Increlex
- Incruse Ellipta
- Inderal
- Inderal LA
- Indian dye
- Indian paint
- Indian plant
- Indian Valerian
- Indocin
- Infacol
- Infant's Feverall
- InFeD
- Infergen
- Inflectra
- Infumorph
- Ingrezza
- ingwer
- ingwerwurzel
- INH
- Inhibace
- Injectafer
- Inlyta
- Innohep
- InnoPran XL
- Innovar
- Inocor
- Insomnal
- Inspra
- Insta-Char
- Insta-Char Aqueous Suspension
- Insta-glucose
- Insulin Reaction
- Integrilin
- Intelence
- interleukin-2
- Intermezzo
- intoxicating pepper
- Intrachol
- Intralipid
- Intrarosa
- Intron A
- Intropin
- Introvale
- Intuniv
- Intuniv XR
- INVanz
- Invega
- Invega Sustenna
- Invega Trinza
- Invirase
- Invokana
- Ionsys
- Iprivask
- Iressa
- Isentress
- Isentress HD
- Isibloom
- Ismelin
- Ismo
- isoflavone
- Isoptin SR
- Isordil
- Isotamine
- Istodax
- Isuprel
- Iveegam EN
- Ixempra
- Ixiaro
- Ixifi