- K+ Care
- K+ Care ET
- K-10
- K-8
- K-C
- K-Dur
- K-Electrolyte
- K-G Elixir
- K-Ide
- K-Lease
- K-Long
- K-Lor
- K-Lyte
- K-Lyte DS
- K-Lyte/Cl
- K-Lyte/Cl 50
- K-Lyte/Cl Powder
- K-Med 900
- K-Norm
- K-P
- K-Pek
- K-Phos M. F.
- K-Phos Neutral
- K-Phos No. 2
- K-Phos Original
- K-Sol
- K-Tab
- K-Vescent
- K-Y Plus
- KCL 5%
- KCl
- KG-Fed Expectorant Syrup containing Codeine Phosphate, Guaifenesin, and Pseudoephedrine Hydrochloride
- KG-Fed Pediatric Expectorant Syrup containing Codeine Phosphate, Guaifenesin, and Pseudoephedrine Hydrochloride
- KG-Fed Syrup containing Codeine Phosphate and Pseudoephedrine Hydrochloride
| - Kabolin
- Kadian
- Kaletra
- Kalium Durules
- Kalmex
- Kanamycin
- Kantrex
- Kao Lectrolyte
- Kao-Spen
- Kaochlor S-F 10%
- Kaochlor-10
- Kaochlor-20
- Kaolin and Pectin
- Kaolin, Pectin, and Belladonna Alkaloids
- Kaolin, Pectin, and Paregoric
- Kaon
- Kaon-Cl
- Kaon-Cl 20% Liquid
- Kaon-Cl-10
- Kaopectate
- Kaopectate II
- Kaopek
- Kapectolin
- Karidium
- Kato
- Kay Ciel
- Kaylixir
- Keep Alert
- Keflex
- Keflin
- Keftab
- Kefurox
- Kefzol
| - Kemadrin
- Ken-Jec 40
- Kenac
- Kenacort
- Kenacort Diacetate
- Kenaject-40
- Kenalog
- Kenalog in Orabase
- Kenalog-10
- Kenalog-40
- Kenalog-H
- Kendral-Ipratropium
- Kenonel
- Keoxifene
- Kepivance
- Keppra
- Keralyt
- Keratex Gel
- Kerlone
- Kestrone-5
- Ketalar
- Ketek
- Ketoconazole
- Ketoconazole Topical
- Ketoprofen
- Ketorolac
- Ketorolac Ophthalmic
- Ketorolac Oral
- Ketotifen
- Ketotifen Ophthalmic
- Key-Pred
- Key-Pred SP
- Kidkare Decongestant Drops
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