Tenkdol

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Tenkdol

Quick Facts

Property Description
Active Ingredient Ketorolac tromethamine
Pharmacological Class Non-steroidal anti-inflammatory drug (NSAID)
Primary Forms Oral tablets, Injection solution, Ophthalmic solution, Nasal spray
General Purpose Relief of moderate to severe acute pain
Origin Synthetic compound

Tenkdol: What is the Drug and its Composition?

Tenkdol is a synthetic, prescription-only medicine (Rx) containing the active ingredient Ketorolac tromethamine. This drug is classified as a single-ingredient product and is available in multiple pharmaceutical preparations, including oral tablets, an injection solution (for parenteral use), and specialized forms such as an ophthalmic solution and a nasal spray. The variety of dosage forms, particularly the injectable route, is a distinctive feature for instances where rapid systemic action is needed. Its liquid forms utilize an aqueous solution base, while the oral product incorporates solid excipients.


What Type of Medicine is Tenkdol?

Tenkdol belongs to the Non-steroidal anti-inflammatory drug (NSAID) pharmacological class, functioning primarily as a potent analgesic. It is explicitly designated as a non-opioid compound. This distinction is critical because Ketorolac is a non-selective inhibitor of the cyclooxygenase enzyme, establishing its foundational mechanism as an NSAID. Ketorolac is categorized among the most powerful NSAIDs available for short-term use.


General Purpose: How Does Tenkdol Provide Relief?

The general purpose of Tenkdol is to provide effective, time-limited relief from moderate to severe acute pain by disrupting the body's internal pain signaling. It achieves this by acting as a powerful cyclooxygenase inhibitor, thereby stopping the synthesis of prostaglandins—the local chemical messengers that propagate the sensation of pain and trigger inflammatory responses. Ketorolac serves as an effective non-opioid analgesic. The medicine offers an alternative for managing intense pain by addressing the biological sources of inflammation and pain at the tissue level, providing both analgesic and anti-inflammatory benefits.

Regulatory References

  1. NSAID - Mechanism of Action
  2. Ketorolac - StatPearls - NCBI Bookshelf

What side effects are possible with Tenkdol?

Possible Side Effects and Safety Information

The safety profile of Tenkdol (Ketorolac tromethamine), as documented in official government prescribing information, is characterized by risks associated with its class as a potent NSAID and mandates use for only a short duration.

Adverse reactions are classified by frequency and affect multiple organ systems. The most Common effects (reported in 1% to 10% of patients) include edema, dizziness, drowsiness, diarrhea, and constipation. Very Common reactions (incidence ge 10%) typically involve the gastrointestinal and nervous systems, such as nausea, dyspepsia, and headaches.


Serious Adverse Reactions

Official labeling emphasizes the potential for rare but serious adverse reactions, which can be fatal and may occur without prior symptoms. These serious risks are primarily:

  • Gastrointestinal Toxicity: Severe events including ulceration, bleeding, and perforation of the stomach or intestines.
  • Cardiovascular Thrombotic Events: An increased risk of serious events such as myocardial infarction (MI) and stroke.
  • Acute Renal Failure: Potential for severe renal toxicity, particularly in susceptible patients.
  • Severe Skin Reactions: Life-threatening dermatologic conditions such as Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN).

Safety Considerations and Restrictions

The regulatory profile strictly links risk to exposure: the potential for serious gastrointestinal and cardiovascular events increases with the duration of use. Consequently, the total duration of treatment for all forms of Tenkdol must not exceed five days.

Specific populations face greater risk of serious adverse events, including older adults (geriatrics), and the medicine is contraindicated in patients with advanced renal impairment and during the third trimester of pregnancy.

Overdose and Emergency Response

Overdose and When to Seek Help — Official Regulatory Information for Tenkdol

This section outlines the officially documented clinical manifestations and regulator-mandated emergency actions for Tenkdol (Ketorolac tromethamine) overdose.

Overdose Manifestations and Severe Outcomes

Category Official Regulatory Statement
Documented Overdose Presentations Symptoms documented in the event of an overdose may include nausea, vomiting, epigastric pain, drowsiness, and lethargy. Severe cases may present with gastrointestinal hemorrhage (bleeding).
Physiological Systems Affected Gastrointestinal (hemorrhage), Central Nervous System (coma, convulsions, respiratory depression), Renal (acute renal failure), and Cardiovascular (hypertension, anaphylactoid reactions).
Population-specific Overdose Notes Elderly patients are documented as being at greater risk for serious gastrointestinal events when receiving NSAID therapy, requiring careful observation in overdose scenarios.

Emergency-Response Statements

Category Official Regulatory Statement
When Immediate Medical Help is Required Individuals must seek immediate medical attention, contact emergency services, or a Poison Control center when an overdose is suspected.
Antidote and Treatment No specific antidote is known for Tenkdol overdose. Management is symptomatic and supportive, requiring continuous monitoring of the patient's status. Procedures described may include gastric lavage or administration of activated charcoal if ingestion was recent.

The overall regulatory profile defines the overdose as a scenario with potential for life-threatening organ toxicity, including acute renal failure and coma. Because of these documented severe outcomes and the absence of a specific reversal agent, official guidance mandates that the patient receive immediate supportive care and continuous observation to manage symptoms and physiological stability.

Therapeutic Uses of Tenkdol

Tenkdol is a prescribed medicine used for the short-term management of moderately severe acute pain. This typically includes discomfort that requires a level of pain relief comparable to opioid-level analgesics, often following certain surgical procedures. It is utilized to provide relief from symptoms rather than addressing the underlying cause of the condition.

Approved uses of Tenkdol involve providing symptomatic relief for various clinical scenarios, such as immediate postoperative pain and other forms of acute, temporary pain that are not responsive to milder medications. It is important to note that Tenkdol is not intended for the management of minor or chronic painful conditions. The drug’s application is confined to a brief duration to help limit potential risks.

Quick Fact: Relief for Postoperative Discomfort

Eligibility and Restrictions for Use

Tenkdol is officially allowed for adult patients (16 years and older) for the short-term management of moderately severe acute pain. The total duration of use must not exceed five days combined, regardless of the route of administration.

Contraindicated Populations

Use is absolutely prohibited in patients with active peptic ulcer disease, a history of GI bleeding or perforation, advanced renal impairment, or confirmed cerebrovascular bleeding. It is also contraindicated for use in the peri-operative setting of CABG surgery and in patients with a known hypersensitivity to any NSAID.


Age and Special Restrictions

Safety and efficacy are not established for the pediatric population (under 16 years). Older adults (65 years and older) and individuals with moderately elevated serum creatinine require a mandatory reduced maximum daily dose.


Pregnancy and Lactation Status

The medicine is contraindicated during late pregnancy, labor, delivery, and for nursing mothers (lactation). These regulatory statements strictly define the boundaries for use, excluding populations at high risk for serious gastrointestinal, renal, and bleeding complications.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile for Tenkdol (Ketorolac tromethamine) is based on official restrictions and documented effects found in regulatory labeling. This information identifies substances that must not be combined, as well as those requiring close monitoring due to increased risk.

Contraindicated Combinations

Co-administration is strictly prohibited for several classes and specific medicines due to severe interaction risks. This includes Aspirin and other Non-Steroidal Anti-inflammatory Drugs (NSAIDs), which carry an additive risk of serious gastrointestinal adverse effects. All forms of anticoagulants (such as Warfarin) are contraindicated because Tenkdol inhibits platelet function, leading to a synergistic risk of bleeding. Probenecid is prohibited as it drastically decreases Tenkdol’s clearance, resulting in a three-fold increase in plasma concentrations. Pentoxifylline is also restricted due to increased bleeding risk.

Documented Interaction Patterns

Tenkdol's inhibition of renal prostaglandin synthesis can affect the excretion of other drugs. This mechanism can enhance the toxicity of co-administered agents like Methotrexate and Lithium by competitively inhibiting their renal clearance and increasing their systemic plasma levels. Pharmacodynamic reinforcement is noted when Tenkdol is combined with corticosteroids or SSRIs, which increases the documented risk of GI ulceration and bleeding, respectively. Furthermore, a high-fat meal is documented to decrease the drug’s peak concentration and delay its absorption. Finally, in elderly patients (≥ 65 years), slower clearance may result in increased systemic exposure.

Mechanism of Action

The core mechanism of Ketorolac (Tenkdol) is the non-selective inhibition of the Cyclooxygenase-1 ( COX-1) and Cyclooxygenase-2 ( COX-2) enzymes. By competitively blocking the active sites of these enzymes, Ketorolac disrupts the Arachidonic Acid Cascade, thereby halting the cellular production of Prostaglandins, which are key lipid signaling mediators. The resulting reduction in Prostaglandins, particularly PGE2, directly impacts the body's nociceptive signaling pathways. PGE2 normally sensitizes peripheral pain fibers; its reduction prevents this sensitization. This physiological consequence elevates the threshold needed to trigger a neural signal toward the central nervous system, leading to the predictable physiological adjustment of reduced nociceptor sensitization and attenuated inflammatory mediator activity at the tissue level. The functional activity of this mechanism is strictly constrained to biological processes that rely on COX and Prostaglandins, and it cannot modulate processes driven by signaling pathways independent of PGE2.

Dosage and Administration Information

How to Use Tenkdol: Administration Guidelines

Tenkdol (ketorolac tromethamine) is designated for short-term management of acute pain, and its use follows established protocols concerning the route, dose, and duration of therapy. The medicine is available in multiple forms, including oral tablets, an injection solution (for intravenous and intramuscular use), and a nasal spray.


Administration and Dosage Structure

The usage protocol for systemic Tenkdol is typically sequential. Initial treatment for severe pain is often administered via the Intravenous (IV) or Intramuscular (IM) route. The oral tablet form is used as a continuation therapy following the initial injectable course; it is not indicated as a first-line agent. The maximum recommended maintenance dose for a standard adult (under 65 years and ge 50 kg) is 30 mg every 6 hours for parenteral administration or 10 mg every 4 to 6 hours for oral use.

Time Constraints and Procedural Specifics

Adherence to time limits is critical: the total combined systemic treatment duration (IV, IM, oral, and nasal routes) must not exceed 5 days. For IV administration, the bolus is injected slowly over a minimum of 15 seconds. Furthermore, the lowest effective dose is utilized for the shortest duration to achieve the treatment goal.

Population-Specific Adjustments

Dosage is stratified by patient characteristics. For older adults (ge 65 years) or patients with low body weight (<50 kg), dose reductions are applied, and the maximum total daily dose is typically limited to 60 mg. The use of Tenkdol in pediatric patients is generally not established for systemic use.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Tenkdol (Ketorolac)


Research Evidence for Managing Moderate to Severe Acute Pain

The primary research for Tenkdol was conducted using Randomized Controlled Trials (RCTs), which is the study type often used in official clinical evaluations. These trials were typically short-term and explored the medicine’s use in conditions characterized by acute, high-intensity pain, such as the outcomes related to physical discomfort often experienced after surgical procedures (postoperative pain) or dental procedures. The study populations primarily included adults who were experiencing periods of heightened symptom activity.

Research indicates that studies generally reported changes in the symptom patterns observed in the populations over the brief follow-up periods examined. The results apply only to the populations studied during brief periods of administration, meaning the long-term effects are not fully established. Research exploring outcomes related to physical discomfort from the use of Tenkdol for prolonged or chronic periods is extremely limited.


Studies on Opioid-Sparing Strategies and Co-administration

Tenkdol was studied for its role as an adjunctive analgesic, meaning it was used alongside standard pain medications, often opioids, particularly in the hospital setting. These studies research examined total opioid medication consumption when Tenkdol was co-administered to adult patients in the immediate recovery phase following surgery.

These studies findings describe patterns observed in the studies regarding outcomes monitoring physiological strain or stress related to opioid consumption when Tenkdol was associated with the patient's pain management regimen. The evidence for this co-administration strategy was observed in some studies to provide context for how symptoms change over time. However, the follow-up durations were limited to the immediate post-surgical window (typically 24 to 48 hours).


Evidence Base in Specific Populations

Research was evaluated in specific populations that included both children and adolescents (pediatric patients aged 6 to 17) and older adults. The evidence related to these specific groups data are still emerging and is limited compared to the general adult population. For pediatric patients, the existing research structures research highlights what is known but reported varying outcomes regarding the most appropriate dosing schedules, meaning data for certain groups remain limited.

Frequently Asked Questions (FAQ)

Common questions about Tenkdol (FAQ)

Q: Is Tenkdol the same kind of drug as ibuprofen?

A: Tenkdol (Ketorolac) is classified in the same class of medicines as ibuprofen, known as Non-steroidal Anti-inflammatory Drugs (NSAIDs). However, official information shows that Tenkdol is designated strictly for the short-term management of moderately severe acute pain. Its total duration of use must not exceed five days due to the potential for serious side effects, distinguishing its regulated use from other NSAIDs.

Q: Why do some people say they feel sleepy after taking Tenkdol?

A: Official labeling reports that a common adverse reaction associated with the medicine is drowsiness, which users often describe as feeling sleepy. This effect, along with dizziness, is noted to occur in 1% to 10% of patients in clinical studies.

Q: Do you have to take Tenkdol with food?

A: Regulatory information indicates that this medicine can be taken with or without food. Taking it with food is sometimes suggested if the medicine causes stomach upset. This information is descriptive of the official guidance provided for the medicine.

Q: What does 'contraindication' mean in relation to Tenkdol?

A: In official drug documents, a contraindication describes a health condition or circumstance where the drug must not be used. For Tenkdol, this means that using the medicine when a contraindication is present carries a risk of harm that is significantly greater than the potential benefit. Regulatory bodies strictly define these conditions for safety.

Q: What research themes are commonly studied regarding Tenkdol?

A: Studies have primarily focused on the use of Tenkdol in managing moderate to severe acute pain, particularly pain experienced after surgical procedures (postoperative pain). The medicine has also been studied for its potential role as an opioid-sparing option, meaning it is used alongside or instead of opioids to manage intense pain in certain clinical settings.

Q: Can Tenkdol cause changes in mood or anxiety?

A: While the drug is not associated with primary anti-anxiety action, regulatory safety surveillance has included reports of rare adverse events such as depression and mental confusion.

Q: Can I stop using Tenkdol suddenly?

A: Official documents indicate that Tenkdol is a non-opioid and is not associated with physical dependence or tolerance. Because it is a non-opioid, risks related to physical withdrawal are not associated with its discontinuation.

Q: Why do official documents state that Tenkdol's mechanism of action is not fully known?

A: The official regulatory text states that the exact way the medicine works is not completely understood. It is believed to be primarily related to its ability to stop the production of pain-signaling chemicals in the body through prostaglandin synthesis inhibition.

Q: How quickly should I expect Tenkdol to start working?

A: According to clinical pharmacology studies, pain relief has been measured as early as 30 minutes after the recommended doses. The medicine typically reaches its peak pain-relieving effect within two to three hours.

Q: Is it common to feel a little dizzy when first starting Tenkdol?

A: Dizziness is listed as a common adverse reaction associated with the use of the medicine, reported in 1% to 10% of patients in studies. Official information indicates this as a commonly observed side effect of the medicine.

Q: Are there any long-term side effects associated with Tenkdol use?

A: The potential for serious side effects, including gastrointestinal bleeding and cardiovascular events, increases with the duration of use. Because of this risk, official regulations strictly limit the total systemic treatment to a maximum of five days.

Q: Is Tenkdol safe for older adults (seniors)?

A: Official information notes that older adults (ge 65 years) are at a greater risk for serious side effects compared to younger patients. Regulatory guidelines state that dose reductions are required for this population due to the increased risk.

Q: Can teenagers or children take Tenkdol?

A: Safety and effectiveness have not been established for children under 16 years of age. Adolescents 16 years and older are subject to the regulation that the total duration of treatment must not exceed five days.

Q: Does Tenkdol have a risk of dependence or addiction?

A: The medicine is documented to be a non-opioid and to not cause physical or mental dependence or tolerance.

Q: What is the risk level for liver problems with Tenkdol?

A: While uncommon, rare cases of severe hepatic reactions (liver-related issues), including fatal fulminant hepatitis and liver necrosis, have been reported in association with NSAIDs. Official documents state that the medicine should be used with caution in patients with impaired liver function.

Q: Can I use Tenkdol while breastfeeding?

A: The manufacturer strictly indicates that the medicine is contraindicated (must not be used) for use in nursing mothers during the period of lactation, as this poses a risk.

Q: What types of food interactions are listed for Tenkdol?

A: Regulatory information on the medicine’s absorption indicates that taking the medicine with food may reduce the rate of its absorption. The total amount of medicine absorbed by the body is generally unaffected, but the rate at which the medicine enters the system may be slower.

Q: If I miss a planned use of Tenkdol, what is the guidance?

A: Official patient guidance indicates that if a dose is missed, the recommended action is to skip the missed dose. The next dose should be taken at the regularly scheduled time, avoiding taking extra doses to compensate.

Q: What should I do if the medicine does not seem to be working?

A: Official patient information states that if symptoms do not begin to improve or if they get worse during the short course of treatment, this observation should be shared with a healthcare team.

Q: Does Tenkdol require a prescription?

A: Yes, official labels from regulatory bodies designate this medicine as prescription-only (Rx only). It cannot be legally dispensed without authorization from a licensed healthcare provider.

Q: Can I buy Tenkdol over the counter?

A: No, the medicine is designated as a prescription-only (Rx only) product. It is not available for general purchase over the counter because of the mandated need for professional supervision of its short-term use.

Q: Are there any ongoing clinical trials for Tenkdol?

A: Official government databases, such as ClinicalTrials.gov, contain listings for studies that have investigated or are currently investigating the drug's use in specific settings. These studies explore its use in specific areas, such as the management of acute postoperative pain.

Q: How is Tenkdol processed by the body (metabolism)?

A: The medicine is primarily processed, or metabolized, in the liver. Once processed, the drug and its byproducts are primarily removed from the body, or excreted, by the kidneys.

Q: Is Tenkdol generally considered a 'strong' medicine?

A: Official labeling describes the medicine as a potent analgesic (powerful pain reliever). It is indicated for the management of moderately severe acute pain that requires pain relief at a level comparable to an opioid.

Q: Can Tenkdol affect my ability to drive or operate machinery?

A: Official safety information notes that actions such as driving or operating heavy machinery should be avoided if side effects like dizziness or drowsiness are experienced.

Q: Does Tenkdol cause weight gain or weight loss?

A: Some adverse event reports have included mentions of unusual weight gain and swelling of the feet or lower legs. This effect is typically related to fluid retention, which is a known side effect of this class of medicine.

Q: Does Tenkdol interact with blood pressure medications?

A: Due to the medicine's potential effect on kidney function, it can influence the excretion of certain co-administered drugs. This includes drug classes often used for blood pressure management, such as ACE inhibitors and diuretics.

Q: How does the drug's purpose relate to the conditions it treats?

A: The drug's purpose is to act as a powerful cyclooxygenase inhibitor to stop the body from producing chemical messengers that cause pain and inflammation. This mechanism is why it is officially approved for treating moderate to severe acute pain.

Q: What is the definition of the conditions Tenkdol is approved to treat?

A: The medicine is approved for the management of moderate to severe acute pain. Official sources describe this as pain that requires a level of relief comparable to an opioid, and it must be managed for a strictly limited duration of no more than five days.

How should Tenkdol be stored and disposed of?

Storage and Protection Requirements

Condition Requirement (Official Labeling)
Temperature Store at Controlled Room Temperature (20 C to 25 C or 68 F to 77 F) [FDA].
Protection Must be protected from light and kept from freezing [FDA, NIH].
Container Keep in the original container, which must be tightly closed [NIH]. Injection vials must be retained in the carton until use.
Child Safety The medication must be kept out of the reach of children [NIH].

Disposal Instructions

Any unused portion of single-dose vials must be discarded immediately after use [ASHP]. For expired or unused medicine, follow local guidelines for proper disposal, which often include drug take-back programs. Do not flush the medicine down a toilet or pour it into a drain unless specifically instructed by regulatory authorities or the labeling. The disposal of the product must be safe and consistent with pharmaceutical waste protocols.

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

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