Ketogen

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Ketogen

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Ketogen

Quick Facts

Property Description
Active ingredient Ketorolac Tromethamine
Form Tablets, Injection solution, Ophthalmic solution
Pharmacological class Nonsteroidal Anti-Inflammatory Drug (NSAID)
Common use Acute pain management, Anti-inflammatory agent
Origin Synthetic, Pyrrolo-pyrrole derivative

What Type of Medicine is Ketogen (Ketorolac)?

Ketogen is a potent, prescription-only medicine whose identity is established by its active substance, Ketorolac Tromethamine. This drug is formally classified as a Nonsteroidal Anti-Inflammatory Drug (NSAID), recognized for its strong analgesic properties used primarily in acute pain management. Supported by pharmacological studies, Ketorolac's efficacy is clinically recognized for being among the strongest within the NSAID class. The drug operates as a synthetic non-opioid substance, chemically identified as a pyrrolo-pyrrole derivative, which allows it to address intense discomfort without relying on the central nervous system mechanisms associated with narcotic medications.

Active Ingredient and Available Forms

Ketogen is manufactured as a single-ingredient product, containing only the active substance Ketorolac Tromethamine. To address varying clinical needs, the medication is available across several essential dosage forms, a differentiating factor among analgesics. These include oral tablets, a solution for injection for parenteral administration, and an ophthalmic solution for targeted local use. This confirms that Ketogen's multiple forms ensure flexibility, allowing for rapid systemic administration via injection or targeted local administration via eye drops for specific ocular inflammation.

General Purpose and Mechanism Principle

The general purpose of Ketogen is to act as an effective anti-inflammatory agent and analgesic for relieving moderate to severe acute pain and associated inflammation. It achieves this strong therapeutic effect by functioning as a Cyclooxygenase inhibitor, which targets and stops the production of prostaglandins, the chemical messengers that drive pain signals and inflammation in the body. This unique action provides a peripheral analgesic effect, reducing discomfort directly at the injured or inflamed site, thereby facilitating physical comfort during recovery.

What side effects are possible with Ketogen?

Serious Side Effects and Key Safety Warnings

Ketogen is associated with significant safety concerns documented in regulatory labeling, primarily concerning serious cardiovascular and gastrointestinal events. Because one major component of products sharing this name (Ketoprofen, an NSAID) is an FDA-indicated drug, this component carries the most severe warnings.

  • Cardiovascular Thrombotic Events: NSAIDs may increase the risk of serious and potentially fatal cardiovascular events, including heart attack and stroke. This risk may increase with duration of use and in individuals with pre-existing heart disease or risk factors.
  • Gastrointestinal Risk: NSAIDs may cause serious gastrointestinal adverse events, such as bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal. This can occur at any time without warning symptoms.
  • Hypersensitivity and Liver: Serious skin reactions (e.g., Stevens-Johnson syndrome), liver problems (e.g., jaundice), and kidney toxicity may occur, particularly with long-term use.

Common Adverse Reactions

The most frequently reported side effects for components of Ketogen include central nervous system (CNS) and gastrointestinal complaints:

System-Organ Class Common Adverse Reactions
Nervous System Drowsiness, dizziness, headache, insomnia, nervousness
Gastrointestinal Nausea, constipation, diarrhea, stomach upset
Metabolic/Other Weight gain, fluid retention/edema, dry mouth, tinnitus (ringing in the ears)

Population-Specific Safety Considerations

Use is contraindicated around or after 20 weeks of pregnancy due to the risk of harm to the fetus (premature closure of the ductus arteriosus). Caution is required for patients with pre-existing heart failure, uncontrolled hypertension, or a history of gastrointestinal bleeding. Elderly patients are at a greater risk for serious GI and renal adverse events. Patients should also exercise caution when performing tasks requiring alertness due to the potential for drowsiness or dizziness.

Overdose and Emergency Response

Overdose and when to seek help: Official Regulatory Information for Ketogen (Ketorolac Tromethamine)

Domain Official Regulatory Statements
Documented Overdose Presentations Overdoses are usually limited to lethargy, drowsiness, nausea, vomiting, and epigastric pain. Single overdoses have also been associated with abdominal pain, hyperventilation, peptic ulcers, and/or erosive gastritis.
Physiological Systems Affected Gastrointestinal (GI) tract, Renal system (acute renal failure, renal dysfunction), Cardiovascular system (hypertension), Central Nervous System (respiratory depression, coma).
Dose-Related Factors Gastric decontamination may be considered for patients seen within four hours of ingesting a large oral overdose (typically 5 to 10 times the usual dose).
Population-Specific Notes Elderly or debilitated patients are at a higher risk for serious or fatal gastrointestinal events, which are key complications to monitor in overdose.
Emergency-Response Statements Patients should be managed by symptomatic and supportive care. No specific antidotes are known. For accidental ingestion of the ophthalmic solution, the official guidance is to drink fluids to dilute.
When Immediate Medical Help Is Required Immediate medical attention is required due to the risk of rare but severe outcomes, including acute renal failure, gastrointestinal bleeding, respiratory depression, and coma.

Connection to the overall overdose profile

Government regulatory documents define the Ketogen overdose profile by first detailing the expected range of reversible clinical manifestations (lethargy, nausea) and immediately connecting these to the critical risk of rare, severe, and potentially life-threatening outcomes (e.g., acute renal failure or coma). This structure mandates that medical help must be sought immediately to initiate regulator-defined symptomatic and supportive care and evaluate the viability of time-constrained interventions like activated charcoal.

Therapeutic Uses of Ketogen

The therapeutic relevance of Ketogen generally lies in the supportive management of symptoms related to physical discomfort during short-term acute episodes. Its systemic use is commonly applied in clinical settings that involve acute or unstable symptom patterns where additional symptomatic support is needed.

Ketogen is applied across domains where increased discomfort or tension is present, relevant for easing symptoms associated with acute or disruptive episodes, such as those following surgical procedures, acute trauma, or intense migraines. It is commonly used to help manage physical symptoms related to inflammatory or irritative states, such as swelling. The ophthalmic solution is commonly used to help with symptoms like pain, burning, stinging, and itching that interfere with daily comfort, relevant in conditions involving inflammatory or irritative processes. This supportive relief may help patients cope more steadily with symptom fluctuations.

Quick Fact: Relief for Acute Discomfort

Ketogen is considered relevant for situations involving heightened symptoms. It assists with easing the overall symptom burden, providing supportive relief when symptoms interfere with routine activities.

Regulatory References

  1. U.S. Food and Drug Administration (FDA) and NIH DailyMed overview

Eligibility and Restrictions for Use

Eligibility for Ketogen (Ketorolac Tromethamine)

Ketogen is intended for use in adult patients for the short-term management of moderately severe acute pain, as specified by regulatory authorities. Its use is subject to strict eligibility rules and numerous absolute contraindications documented in official prescribing information.

Classification Population or Condition
Absolutely Contraindicated Patients with active or history of peptic ulcer disease, GI bleeding/perforation, or a high risk of bleeding (e.g., cerebrovascular bleeding, hemorrhagic diathesis).
Patients with advanced renal impairment or those at risk for renal failure due to volume depletion.
Patients with known hypersensitivity to aspirin or other Nonsteroidal Anti-Inflammatory Drugs (NSAIDs).
Use during the third trimester of pregnancy, labor, delivery, or while breastfeeding.
Conditional or Restricted Use Elderly patients (65 and over) and patients with low body weight require a reduced maximum daily dose as they are at higher risk for adverse effects.
Patients with mild renal impairment must be monitored closely and given a reduced dosage.
Use Not Established Systemic use is not indicated for pediatric patients, as safety and effectiveness have not been established by regulatory bodies.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

Ketogen (Ketorolac Tromethamine) can engage in clinically significant interactions with several medications and substances, as documented in official regulatory prescribing information. These interactions are primarily classified by the increased risk of severe adverse effects, changes in drug clearance, or modifications to pharmacodynamic responses.


Contraindicated Combinations

Certain combinations are explicitly prohibited due to a high risk of serious events:

  • Aspirin (ASA) and other Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): Prohibited due to a cumulative risk of serious NSAID-related gastrointestinal bleeding and ulceration.
  • Anticoagulants (e.g., Warfarin, Heparin): Contraindicated due to a synergistic and increased risk of hemorrhage.
  • Probenecid: Prohibited because it significantly increases ketorolac plasma levels by reducing its clearance.
  • Lithium Salts: Contraindicated as Ketogen can reduce renal lithium clearance, leading to elevated lithium concentrations and potential toxicity.
  • Pentoxifylline: Prohibited due to an officially documented increased risk of bleeding.

Other Documented Interactions

Interacting Substance Documented Effect Classification
Methotrexate Reduces renal clearance, potentially increasing toxicity. Pharmacokinetic
Diuretics (e.g., Furosemide) Reduces their natriuretic and diuretic effects. Pharmacodynamic
Elderly Patients (ge 65 years) Slower drug clearance, increasing the risk of exposure-related effects. Population-Specific
High-fat meal Delays time-to-peak concentration ( T max) but does not affect the total amount absorbed ( AUC). Food Interaction

Mechanism of Action

How Ketogen Works

Enzyme Inhibition and Prostaglandin Blockade

The core mechanism of Ketogen is its function as a non-selective inhibitor of the Cyclooxygenase (COX-1 and COX-2) enzymes. By competitively blocking the active site of these enzymes, the drug arrests the breakdown of arachidonic acid, thereby halting the synthesis of key physiological mediators, chiefly prostaglandins and thromboxanes.

Modulation of Nociceptive Signaling

This molecular action modifies early signaling steps that shape systemic physiological outcomes by reducing the concentration of Prostaglandin E2 ( PGE2). This leads to a reduction in the sensitization of peripheral nociceptors (pain receptors) and decreases the central amplification of pain signals within the spinal cord, which alters the signaling dynamics within nociceptive pathways.

Inherent Mechanistic Constraints

The drug's mechanism involves pathway modulation; however, its non-selective nature creates an inherent limitation. By inhibiting the constitutive COX-1 enzyme, the mechanism simultaneously reduces the production of prostaglandins required for essential homeostatic functions, specifically the protection of the gastric mucosal barrier and the maintenance of adequate renal blood flow.

Dosage and Administration Information

Ketogen (ketorolac tromethamine) is administered through three different official routes: parenteral (Intravenous and Intramuscular), oral, and topical ophthalmic. For systemic use, a strict limit is mandated: the total combined duration of IV, IM, and oral administration must not exceed five days in adult patients.

The injection solution is typically utilized in a clinical setting. To ensure proper delivery, the IV bolus injection must be administered over a minimum of 15 seconds, and IM injections should be administered slowly and deeply into the muscle.

Oral tablets (10 mg) are designated solely as continuation therapy following an initial IV or IM dose; the oral form is never used to start systemic treatment. The maintenance dose is typically 10 mg every four to six hours, with the total daily oral dose restricted to 40 mg. In standard adult patients (under 65 years and 50 kg), the multiple-dose regimen for IV or IM administration is generally 30 mg every six hours, with a maximum total daily dose of 120 mg.

Dosing regimens require adjustment for specific populations. Patients 65 years of age or older, those weighing less than 50 kg, or individuals with renal impairment must receive a reduced dose. For these patients, the maximum total daily systemic dose must not exceed 60 mg. The ophthalmic solution is used locally, applied four times a day, with a requirement to space applications of other topical eye drops by at least five minutes.

Recent Clinical Evidence

Research evidence / Overview of studies for Ketogen

This section provides a factual overview of the clinical research that has explored Ketogen (Ketorolac Tromethamine). It describes what types of studies have been conducted, what outcomes they measured, and what remains uncertain in the evidence base, based on summaries provided by regulatory bodies and scientific literature.


Evidence for Acute Pain Following Surgical Procedures

The evidence base for this application is built on numerous Randomized Controlled Trials (RCTs) and subsequent systematic reviews. Research explored how physical discomfort changes over time in adult populations following procedures such as orthopedic, dental, or abdominal surgery. The principal study outcomes examined were changes in patient-reported pain intensity scores (such as VAS or NRS) and the amount of supplemental pain medication (often opioids) consumed by the patient. Research monitored patterns related to the time until a measurable change in pain scores was observed following administration and total supplemental medication consumption. The research provides context regarding the short-term observation of acute discomfort in these specific surgical settings.

Evidence for General Acute Pain Management

Ketogen was evaluated in various research contexts for conditions associated with acute or disruptive episodes, such as those presenting with trauma or musculoskeletal issues. These studies, often conducted in emergency department settings, explored short-term symptom changes, monitoring measurements of physical discomfort over defined time intervals. Findings highlight patterns related to the changes measured in pain scores and documented the proportion of patients using supplementary medication during the observation period. Because the term "general acute pain" covers many different causes, the consistency of research findings may vary across the different clinical causes studied.

Long-Term Studies and Follow-Up Duration

The clinical research framework for Ketogen is focused predominantly on short-term use. The follow-up durations in the primary trials used to establish the evidence base were limited, reflecting its intended use for managing acute (short-lived) episodes of pain. Consequently, there is limited information for long-term outcomes for it. The existing research does not provide comprehensive insight into the long-term stability of measured pain scores or the patterns observed in patients who might require prolonged or repeated use over many months or years.

Key Studies & References

  1. Ketorolac Tromethamine - NIH DailyMed Drug Label Information
  2. Ketorolac (Systemic) - American Society of Health-System Pharmacists (ASHP) Drug Information
  3. Topical non-steroidal anti-inflammatory drugs for the prevention of cystoid macular oedema after cataract extraction

Frequently Asked Questions (FAQ)

Common questions about Ketogen (FAQ)


Q: How long does it usually take for Ketogen to start working?

According to official product information, the oral tablet formulation is absorbed rapidly, typically reaching its highest concentration in the body in about one hour. Intravenous and intramuscular injections are absorbed very quickly, with peak concentrations observed within minutes of administration.


Q: Does Ketogen interact with alcohol?

Regulatory documents state that using an NSAID like Ketogen while consuming large amounts of alcohol can increase the risk of serious side effects. Specifically, there is an increased potential for gastrointestinal adverse events, such as stomach bleeding or ulceration.


Q: Can people with diabetes use Ketogen?

Official drug information does not list diabetes as an absolute restriction for the systemic use of this drug. However, for the topical ophthalmic form, some sources note that patients with diabetes may be at an increased risk for certain eye-related adverse events.


Q: Is Ketogen usually taken once a day or more often?

The oral tablet is used as a continuation therapy and is typically administered multiple times a day, not once daily, as part of a regimen that includes a strict limit on the total daily dose. The injectable forms also typically follow a multiple-dose schedule.


Q: Are weight changes a typical expectation with Ketogen?

Official adverse reaction reports include fluid retention, also known as edema, and weight gain. Regulatory information does not provide detailed prevalence data or specific expectations regarding the magnitude of the weight change.


Q: Can people with a history of depression use Ketogen?

Official prescribing information does not list a history of depression as an absolute contraindication for use. However, the drug’s labeling does include nervous system adverse reactions such as nervousness and insomnia (difficulty sleeping) among the common reports.


Q: Does taking Ketogen mean I have to change what I eat?

Official information indicates that taking the oral tablet with a high-fat meal may delay the time it takes for the drug to reach its maximum concentration. General dietary changes beyond this are not broadly mandated in the regulatory documents.


Q: Can Ketogen be taken by people who are sensitive to stomach upset?

The drug is associated with a risk of serious gastrointestinal events, including stomach bleeding and ulcers. Minor upset like nausea is also commonly reported. Its use is strictly prohibited in patients who have a history of peptic ulcer disease or GI bleeding.


Q: What is the importance of keeping track of when Ketogen is taken?

The total duration of systemic treatment is strictly limited to five days, and the daily maximum dose should not be exceeded, as increased exposure raises the risk of serious adverse events. Regulatory documents emphasize adherence to the prescribed dosing schedule.


Q: What happens if you miss a dose of Ketogen sometimes?

If a dose is missed, regulatory sources advise taking it as soon as remembered. However, if it is almost time for the next scheduled dose, official guidance indicates the missed dose is typically skipped to help avoid exceeding the intended dosage.


Q: Are there any common foods or drinks that should be avoided while using Ketogen?

Official warnings specifically address the risk of combining the drug with alcohol due to the potential for increased stomach bleeding. No other common foods or drinks are explicitly prohibited in the general regulatory labeling.


Q: What should I know about Ketogen if I have kidney issues?

The drug is strictly prohibited for use in patients with advanced kidney impairment. For individuals with mild kidney issues, the drug label specifies the need for a reduced maximum daily dose. The use of the drug in this population requires close monitoring of kidney function due to the potential for toxicity.


Q: Does Ketogen have any known interactions with common over-the-counter pain relievers?

Yes, regulatory documents strictly prohibit using Ketogen with aspirin or other Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), such as ibuprofen or naproxen. This is due to a cumulative risk of serious side effects, especially relating to the gastrointestinal system.


Q: Is headache a commonly reported side effect when using Ketogen?

Headache is listed as one of the commonly reported adverse reactions in clinical trials. While regulatory information documents its occurrence, it does not specify whether this effect is limited to the initial starting phase of treatment.


Q: Do I need to get regular blood tests while I am taking Ketogen?

Due to the potential for effects on the liver and kidney, and risk of bleeding, regulatory documents indicate that lab monitoring, such as liver function tests and bleeding time, may be required by a healthcare provider.


Q: Is Ketogen habit-forming or addictive?

Ketogen is classified as a non-opioid, nonsteroidal anti-inflammatory drug (NSAID). According to regulatory and health authority statements, it is not listed as a controlled substance due to its lack of potential for abuse or addiction.


Q: How long does Ketogen stay in your system after you stop taking it?

The drug is eliminated through the kidneys. The mean plasma elimination half-life—the time it takes for half the drug to be removed—is typically 5 to 6 hours in healthy adults, though it can be longer in specific populations.


Q: If I am taking a medicine for high cholesterol, can I still take Ketogen?

The drug's official labeling does not list a direct contraindication for all cholesterol-lowering medicines (statins). However, information on all concurrent use of medications should be reviewed with a healthcare provider.


Q: Are there any common genetic factors that change how Ketogen works?

Official drug documents state that pharmacokinetic differences, which relate to how the body processes the drug, have not been identified based on race. The regulatory information does not provide a comprehensive statement on all common genetic factors.


Q: Is the research on Ketogen mostly based on animal studies or human trials?

The evidence base used to support the drug’s approved uses is primarily built on numerous Randomized Controlled Trials (RCTs) and systematic reviews conducted in human populations, as noted in the research overview.


Q: Does Ketogen affect sleep patterns?

Official adverse reaction reports list two opposing effects related to sleep: insomnia (difficulty sleeping) and drowsiness. These are both classified as commonly reported effects of the drug.


Q: Can I take Ketogen with vitamins or mineral supplements?

The official labeling provides a general statement that interactions may occur with other medications. Information on all concurrent use of supplements should be reviewed with a healthcare provider.


Q: Is it true that Ketogen can cause changes in vision?

The ophthalmic solution formulation of the drug lists blurred vision as a reported side effect. In addition, rare, serious eye symptoms such as sudden vision loss have been documented.


Q: Is Ketogen available outside of a prescription?

The systemic forms of the drug, which include the oral tablets and injections, are classified as a prescription-only medicine. They are not available for over-the-counter use.


Q: What are the most common reasons someone is told they cannot use Ketogen?

The most common absolute restrictions (contraindications) for its use are a history of peptic ulcer disease or gastrointestinal bleeding, advanced kidney impairment, or a high risk of bleeding (hemostasis) from any cause.

How should Ketogen be stored and disposed of?

How to Store and Dispose of Ketogen?

The storage and disposal of Ketogen (Ketorolac Tromethamine) must comply with official regulatory labeling to ensure product stability and safety.

Storage Requirements

Ketogen must be stored at controlled room temperature, specifically between 20 C and 25 C (68 F to 77 F). The medication must be kept in its original container, which should remain tightly closed, and protected from both light and excessive moisture.

Stability and Handling

The injection solution must not be frozen. For the ophthalmic solution, any unused portion must be discarded 30 days after opening.

Safety and Disposal

All forms of Ketogen must be stored out of the sight and reach of children.

Unused or expired medicine must be disposed of according to local requirements and should not be flushed down the toilet, in compliance with environmental guidelines for pharmaceutical waste.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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