- K-Lyte
- KAZANO
- Kaletra
- Kaletra Pediatric
- Karvea
- Karvezide
- Kayexalate
- Keflex
- Kelhale CFC Free Inhaler
- Kemadrin
- Kenacomb
- Kenacort A Ointment
- Kenacort Injection
- Kenacort Oral Paste
- Kenalog In Orabase
- Kenalog-10
- Kenalog-40
- Keppra
- Keppra Oral Solution
- Keppra XR
- Kerendia
- Ketoconazole
- Ketoconazole Cream
- Ketoconazole Shampoo
- Ketoprofen CR
- Ketoprofen E
- Ketoprofen Gel
- Ketoprofen SR
- Ketoral Cream
- Ketorolac
- Ketorolac Eye Drops
- Ketorolac Gel
- Ketotifen
- Kisqali
- Kivexa
- Klacid
- Klaricid MR
- Kliogest
- Kliovance
- Kombiglyze XR
- Komboglyze
- Kryzana
- Kuvan
- Kyleena
- Kyleena IUD
- Kytril