What is Ketorolac: Uses, Warnings & Interactions

Updated Sep 2, 2025  •  Published Dec 30, 2020

Ketorolac tromethamine is a prescription non-opioid pain reliever primarily used to treat acute pain. Although it’s an NSAID like ibuprofen, it’s almost as powerful as opioid pain relievers. Because it’s so powerful, doctors prescribe ketorolac for only a short time because of the risk of serious side effects.

Ketorolac overview

BRAND NAMES:

  • Acular (eye drops), Acuvail (eye drops), Sprix (nasal spray), Toronova SUIK (injection)

Generic Names:

  • Ketorolac tromethamine

Uses:

  • Treats moderate to severe pain; treats ocular inflammation or pain (eye drops)

Therapeutic Classes:

  • Analgesic, anti-inflammatory

Forms:

  • Tablet, nasal spray, eye drops, injection

How it’s taken:

  • By mouth, injection, or on the eyes

What is Ketorolac used for?

Ketorolac tromethamine treats moderate to moderately severe pain. The first dose is often an injection followed by tablets, but patients can also use a nasal spray to provide pain relief. Ketorolac eye drops are FDA-approved to treat irritation due to seasonal allergies or to relieve eye pain after cataract surgery or corneal refractive surgery.

What form(s) does Ketorolac come in

  • Tablet

    • 10 mg

  • Nasal spray

    • 15.75 mg/spray

  • Eye drops

    • 0.4%

    • 0.45%

    • 0.5%

  • Injection (prefilled syringe or single-dose vial)

    • 1 mL of 15 mg/mL

    • 1 mL of 30 mg/mL

    • 2 mL of 60 mg/2 mL

What are common Ketorolac doses?

  • For moderately severe pain: 

    • In adults between the ages of 17 and 64: Two 10 mg tablets taken once, followed by one 10 mg tablet every four to six hours for no longer than five days 

    • In adults older than 64: 10 mg tablet every four to six hours for no longer than five days

    • Injections are administered by a healthcare provider

  • For cataract surgery: One drop (0.45% or 0.5% ophthalmic solution) instilled into the affected eye four times daily starting 24 hours after surgery and continuing for two weeks 

  • For corneal refractive surgery: One drop (0.4% ophthalmic solution) instilled into the affected eye four times daily for four days following the procedure

  • For seasonal allergic conjunctivitis: One drop (0.5% ophthalmic solution) instilled into the affected eye four times daily

Common Ketorolac prescriptions

  • Ketorolac Tromethamine
    1 solution bottle

  • Ketorolac Tromethamine
    10ml of 0.5% bottle

  • Ketorolac Tromethamine
    3ml of 0.5% bottle

  • Ketorolac Tromethamine
    5ml of 0.4% bottle

  • Ketorolac Tromethamine
    5ml of 0.5% bottle

  • Ketorolac Tromethamine
    1ml of 30mg/ml crtrdg-ndl

  • Ketorolac Tromethamine
    1ml of 15mg/ml syringe

  • Ketorolac Tromethamine
    1ml of 30mg/ml syringe

  • Ketorolac Tromethamine
    2ml of 60mg/2ml syringe

  • Ketorolac Tromethamine
    10mg tablet

  • Ketorolac Tromethamine
    1ml of 15mg/ml vial

  • Ketorolac Tromethamine
    1ml of 30mg/ml vial

  • Ketorolac Tromethamine
    2ml of 60mg/2ml vial

How to take Ketorolac

  • Your healthcare provider will tell you how much medicine to use. Do not use more than directed.

  • Take tablets every four to six hours.

    • Swallow tablets whole with a full glass of water.

    • Doses can be taken without regard to food, but taking the pill with food or milk may prevent stomach upset.

    • Doses should not be taken for longer than five days.

    • Store ketorolac tablets at room temperature. Protect from light.

  • Administer four doses of the ketorolac eye drops daily. 

    • Follow the healthcare provider’s instructions carefully. Some people will take doses for two weeks, some for only four days, and some for a variable time.

    • Use this product only on the eye.

    • Remove contact lenses before instilling this medicine.

    • Administer only one drop into each affected eye.

    • Do not touch the tip of the dropper to the eye.

    • If you are using other eye drop medications, space the doses of each by at least five minutes.

    • Store the eye drops bottle at room temperature. Protect from light.

  • Take Sprix ketorolac nasal spray every six to eight hours.

    • Follow the healthcare provider’s instructions carefully. Most people will administer one spray into each nostril when taking a dose, but people on a restricted dose will administer one spray into only one nostril.

    • The bottle’s pump needs to be activated before its first use. Please read the instructions in the drug information sheet included with the medicine.

    • Sprix is a nasal spray only. Do not inhale. Hold your breath when spraying Sprix into the nostril.

    • Blow your nose before administering a dose.

    • After inserting the bottle tip, point it away from the center of the nose to give a dose.

    • When finished, breathe through your mouth for a few seconds to avoid expelling the medicine.

    • The bottle is only meant to be used for 24 hours. After that, dispose of the bottle.

    • Store the bottle at room temperature. Keep it away from direct sunlight.

  • This medicine should come with a Medication Guide. If you do not have one, ask your pharmacist for a copy.

What to do if you miss a dose of Ketorolac

  • People given ketorolac by a hospital, clinic, or eye doctor may receive written instructions on how to take the drug. Follow the rules in those instructions for managing a missed dose.

  • People without written instructions should ask the prescriber what to do if a dose is missed.

  • Some doctors or clinics will tell you to skip a missed dose. Some will instruct you to take the missed dose unless it’s almost time for the next dose. Follow the advice you’re given.

  • Do not take extra medicine to make up for a missed dose.

Ketorolac contraindications

  • This medicine is not right for everyone.

  • Ketorolac is contraindicated in anyone who has had an allergic reaction to ketorolac.

  • Ketorolac tablets, injections, and nasal spray are contraindicated in people who have:

    • Known hypersensitivity to NSAIDs such as aspirin or ibuprofen

    • Severe kidney disease (or those who are at risk of kidney failure due to dehydration)

    • Active peptic ulcer disease, recent gastrointestinal bleeding or perforation, or a history of peptic ulcer disease or gastrointestinal bleeding

    • Active bleeding problems, such as a stroke

    • Risk factors for bleeding problems

  • Ketorolac tablets, nasal spray, and injections are contraindicated in people taking:

    • Aspirin or other NSAIDs

    • Probenecid

    • Pentoxifylline 

  • Doctors never use ketorolac:

    • Before major surgery

    • Before or after coronary artery bypass graft surgery

    • In women during labor and delivery

    • As a spinal injection

Ketorolac warnings

  • Tell any doctor or other healthcare provider who treats you that you are using this medicine.

  • Keep all healthcare appointments when taking this medicine.

  • For people taking ketorolac tablets or nasal spray, contact the prescriber if you experience any signs of a serious side effect, such as:

    • Ulcers, gastrointestinal bleeding, or perforation

    • Heart attack or ischemic heart events

    • Heart failure

    • Stroke

    • Liver problems

    • Kidney problems

    • Allergic reactions

    • Skin reactions

  • People taking ketorolac eye drops should immediately contact the prescriber if they start having other eye problems, such as infection or bleeding.

  • Before taking ketorolac tablets or nasal spray, inform the prescriber if you are pregnant, breastfeeding, or have:

    • Kidney disease

    • Liver problems

    • Heart disease

    • Circulation problems

    • A history of blood clots

    • High blood pressure

    • Asthma

  • Ketorolac tablets and nasal spray are not safe to take during pregnancy after 30 weeks of gestation.

  • Do not take ketorolac tablets or nasal spray for longer than five days unless your healthcare provider has instructed otherwise.

Ketorolac interactions

  • Avoid taking other NSAID medicines, such as aspirin, naproxen, ibuprofen, or diclofenac.

    • People on low-dose aspirin therapy may need to quit. Get medical advice from the healthcare provider who prescribed low-dose aspirin.

  • Ketorolac should never be combined with the gout medication probenecid or the blood circulation treatment.

  • Before starting ketorolac tablets or nasal spray, tell the healthcare provider if you are using:

Ketorolac side effects

Serious side effects

Talk to a healthcare provider if you notice any signs or symptoms of a possible serious side effect, including:

  • Severe stomach pain that does not get better, vomiting blood, bloody stools, black and tarry stools, feeling faint

  • Unusual bleeding or bruising.

  • Chest pain, shortness of breath, weakness, slurred speech

  • Sudden or severe headache, numbness or weakness in the arm, leg, or one side of the body, sudden vision changes in one eye, difficulty walking, difficulty talking

  • Swelling in the hands, ankles, or feet, unintended or unusual weight gain, shortness of breath

  • Pain in the lower leg (calf)

  • Changes in how much or how often you urinate

  • Nausea, fatigue, low energy, upper right abdomen pain, dark urine, pale stools, flu-like symptoms, yellowing of the skin or the whites of the eyes

  • Vision changes, eye redness, eye pain, sensitivity to light (eye drops)

  • Red, peeling, or blistering skin rash

  • Allergic reaction: hives, rash, itching, low blood pressure, trouble breathing, trouble swallowing, swelling of the face, mouth, or throat

Less serious side effects

  • Mild stomach pain

  • Nausea

  • Headaches

  • Nasal irritation or pain (nasal spray)

  • Blurred vision (eye drops)

  • Red eye (eye drops)

Sources:

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