Here you’ll find 6 Medications that start with K that begin with K, organized from “Kanamycin” to “Ketotifen”. They include antibiotics, antihistamines, and other commonly prescribed medicines used around the world.

Medications that start with K are generic drug names and common treatments whose names begin with the letter K. A notable example is kanamycin, an older antibiotic that helped shape modern antibacterial therapy.

Below you’ll find the table with Medication, Drug class, Common uses, and Common side effects.

Medication: The generic name listed so you can quickly recognize the active ingredient behind brand labels and prescriptions.

Drug class: Shows the therapeutic group so you understand how the medication works and what other drugs it’s related to.

Common uses: Summarizes the typical conditions the medicine treats, helping you spot when it may be prescribed.

Common side effects: Lists frequent adverse effects so you know what symptoms to watch for during treatment.

Last updated: 2025-09-28

Medical disclaimer: For informational purposes only; not a substitute for professional medical advice.

Medications that start with K

Generic nameBrand namesDrug classTypical adult dose
KetamineKetalarNMDA antagonist; dissociative anesthetic1–2 mg/kg IV (induction); 0.25–0.5 mg/kg IV analgesia
KetoconazoleNizoralImidazole antifungal200 mg PO daily (systemic); topical doses vary
KetorolacToradol, Acular (ophthalmic)Nonsteroidal anti-inflammatory drug (NSAID)30 mg IV/IM single; then 10–30 mg PO/IM every 4–6 hrs (max 40 mg/day)
KetoprofenOrudis, OruvailNonsteroidal anti-inflammatory drug (NSAID)50–200 mg PO daily divided (e.g., 50–75 mg every 6–8 hrs)
KetotifenZaditor, AlawayH1 antihistamine; mast-cell stabilizerOphthalmic: 1 drop each eye every 8–12 hrs; Oral: 1 mg PO twice daily
KanamycinKantrex, Kanamycin sulfateAminoglycoside antibiotic15 mg/kg/day IV/IM divided every 8–12 hrs

Descriptions

Ketamine
Rapid-acting anesthetic and pain reliever used for induction, procedural sedation, and acute/chronic pain. Can cause dissociation, hallucinations, elevated heart rate and blood pressure; monitored administration recommended.
Ketoconazole
Treats fungal infections (skin and some systemic). Oral use is limited due to risk of serious liver injury and many drug interactions. Topical forms can cause local irritation.
Ketorolac
Short-term treatment of moderate-to-severe pain. Effective for postoperative pain but not for long-term use; risks include stomach ulcers, bleeding, and kidney injury.
Ketoprofen
Used for pain, inflammation, and arthritis. Common side effects include stomach upset and increased bleeding risk; long-term use can affect kidneys and cardiovascular system.
Ketotifen
Eye drops relieve allergic conjunctivitis; oral form is used in some countries for allergy/asthma prevention. Oral may cause drowsiness; drops can sting or irritate eyes.
Kanamycin
Treats serious gram-negative bacterial infections (limited use). Can cause nephrotoxicity and irreversible hearing loss; requires blood level and kidney function monitoring.
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