ICD-10-CM
- Kallidinogenase
- Kallikrein
- Kanamycin
- Kantrex
- Kaolin
- Karaya (gum)
- Kebuzone
- Kelevan
- Kemithal
- Kenacort
- Keratolytic drug NEC
- Keratoplastic NEC
- Kerosene, kerosine (fuel) (solvent) NEC
- Ketamine
- Ketazolam
- Ketazon
- Ketobemidone
- Ketoconazole
- Ketols
- Ketone oils
- Ketoprofen
- Ketorolac
- Ketotifen
- Khat
- Khellin
- Khelloside
- Kiln gas or vapor (carbon monoxide)
- Kitasamycin
- Konsyl
- Kosam seed
- Krait (venom)
- Kwell (insecticide)