- ketorolac trometamol
POM: Prescription only medicine
This information is intended for use by health professionals
Cardiovascular and cerebrovascular effects:Appropriate monitoring and advice are required for patients with a history of hypertension and/or mild to moderate congestive heart failure as fluid retention and oedema have been reported in association with NSAID therapy.Clinical trial and epidemiological data suggest that use of coxibs and some NSAIDs (particularly at high doses and in long term treatment) may be associated with a small increased risk of arterial thrombotic events (for example myocardial infarction or stroke). Although ketorolac has not shown to increase thrombotic events such as myocardial infarction, there are insufficient data to exclude such a risk for ketorolac.Patients with uncontrolled hypertension, congestive heart failure, established ischaemic heart disease, peripheral arterial disease, and/or cerebrovascular disease should only be treated with ketorolac after careful consideration. Similar consideration should be made before initiating longer-term treatment of patients with risk factors for cardiovascular disease (e.g. hypertension, hyperlipidaemia, diabetes mellitus and smoking).Respiratory effects: Caution is required if administered to patients suffering from, or with a previous history of, bronchial spasm since NSAIDS have been reported to precipitate bronchospasm in such patients.Renal effects: As with other NSAIDs, ketorolac should be used with caution in patients with impaired renal function or a history of kidney disease because it is a potent inhibitor of prostaglandin synthesis. Caution should be observed as renal toxicity has been seen with Ketorolac and other NSAIDs in patients with conditions leading to a reduction in blood volume and/or renal blood flow where renal prostaglandins have a supportive role in the maintenance of renal perfusion. In these patients administration of ketorolac or other NSAIDs may cause a dose dependent reduction in prostaglandin formation and may precipitate overt renal decompensation or failure. Patients at greatest risk of this reaction are those with impaired renal function, hypovolaemia, heart failure, liver dysfunction, those taking diuretics and the elderly. Discontinuation of ketorolac or other non-steroidal anti-inflammatory therapy is usually followed by recovery to the pre-treatment state.As with other drugs that inhibit prostaglandin synthesis, elevations of serum urea, creatinine and potassium have been reported with ketorolac and may occur after one dose.Patients with impaired renal function: since ketorolac and its metabolites are excreted primarily by the kidney, patients with moderate to severe impairment of renal function (serum creatinine greater than 160 micromol/l) should not receive Ketorolac Injection. Patients with lesser renal impairment should receive a reduced dose of ketorolac (not exceeding 60mg/day IM or IV) and their renal status should be closely monitored.SLE and mixed connective tissue disease: In patients with systemic lupus erythematosus (SLE) and mixed connective tissue disorders there may be an increased risk of aseptic meningitis (see section 4.8).Skin reactions: Serious skin reactions, some of them fatal, including exfoliative dermatitis, Stevens-Johnson syndrome, and toxic epidermal necrolysis, have been reported very rarely in association with the use of NSAIDs (see section 4.8). Patients appear to be at highest risk of these reactions early in the course of therapy: the onset of the reaction occurring in the majority of cases within the first month of treatment. Ketorolac trometamol 30mg/ml Solution for Injection should be discontinued at the first appearance of skin rash, mucosal lesions or any other sign of hypersensitivity.Precautions related to female fertility: The use of ketorolac, as with any drug known to inhibit cyclooxygenase/prostaglandin synthesis, may impair female fertility and is not recommended in women attempting to conceive. In women who have difficulties conceiving or who are undergoing investigation for infertility, withdrawal of ketorolac should be considered.Cardiovascular, Renal and Hepatic Impairment: Caution should be observed in patients with conditions leading to a reduction in blood volume and/or renal blood flow, where renal prostaglandins have a supportive role in the maintenance of renal perfusion. In these patients, administration of an NSAID may cause a dose-dependent reduction in renal prostaglandin formation and may precipitate overt renal failure. Patients at greatest risk of this reaction are those who are volume depleted because of blood loss or severe dehydration, patients with impaired renal function, heart failure, liver dysfunction, the elderly and those taking diuretics. Renal function should be monitored in these patients. Discontinuation of NSAID therapy is typically followed by recovery to the pre-treatment state. Inadequate fluid/blood replacement during surgery, leading to hypovolaemia, may lead to renal dysfunction, which could be exacerbated when ketorolac is administered. Therefore, volume depletion should be corrected and close monitoring of serum urea and creatinine and urine output is recommended until the patient is normovolaemic. In patients on renal dialysis, ketorolac clearance was reduced to approximately half the normal rate and terminal half-life increased approximately three-fold (see section 4.3).
Sodium/fluid retention in cardiovascular conditions and peripheral oedemaCaution is required in patients with a history of hypertension and /or heart failure as fluid retention and oedema have been reported in association with NSAID therapy.Fluid retention, hypertension and peripheral oedema has been observed in some patients taking NSAIDs including Ketorolac and it should therefore be used with caution in patients with cardiac decompensation, hypertension or similar conditions.Patients with impaired hepatic function: Patients with impaired hepatic function from cirrhosis do not have any clinically important changes in ketorolac clearance or terminal half-life.Borderline elevations of one or more liver function tests may occur. These abnormalities may be transient, may remain unchanged, or may progress with continued therapy. Meaningful elevations (greater than three times normal) of serum glutamate pyruvate transaminase (SGPT/ALT) or serum glutamate oxaloacetate transaminase (SGOT/AST) occurred in controlled clinical trials in less than 1% of patients. If clinical signs and symptoms consistent with liver disease develop, or if systemic manifestations occur, ketorolac should be discontinued.
Anaphylactic (anaphylactoid) reactionsAnaphylactic (anaphylactoid) reactions (including, but not limited to, anaphylaxis, bronchospasm, flushing, rash, hypotension, laryngeal oedema and angioedema) may occur in patients with or without a history of hypersensitivity to aspirin other NSAIDs or ketorolac. These may also occur in individuals with a history of angioedema, bronchospastic reactivity (e.g. asthma) and nasal polyps. Anaphylactoid reactions, like anaphylaxis, may have a fatal outcome. Therefore, ketorolac should not be used in patients with a history of asthma and in patients with the complete or partial syndrome of nasal polyps, angioedema and bronchospasm (see section 4.3).Haematological effects: Patients with coagulation disorders should not receive ketorolac. Patients on anti-coagulation therapy may be at increased risk of bleeding if given ketorolac concurrently. The concomitant use of ketorolac and prophylactic low-dose heparin (2500 - 5000 units twelve hourly), warfarin and dextrans has not been studied extensively and may also be associated with an increased risk of bleeding. Patients already on anti-coagulants or who require low-dose heparin should not receive ketorolac. Patients who are receiving other drug therapy that interferes with haemostasis should be carefully observed if ketorolac is administered. In controlled clinical studies, the incidence of clinically significant post-operative bleeding was less than 1%.Ketorolac inhibits platelet aggregation and prolongs bleeding time. In patients with normal bleeding function, bleeding times were raised, but not outside the normal range of two to eleven minutes. Unlike the prolonged effects from aspirin, platelet function returns to normal within 24 to 48 hours after ketorolac is discontinued. Post-operative wound haemorrhage has been reported in association with the immediate peri-operative use of ketorolac. Therefore, ketorolac should not be used in patients who have had operations with a high risk of haemorrhage or incomplete haemostasis. Caution should be used where strict haemostasis is critical, e.g. but not limited to cosmetic or day-case surgery, resection of the prostate or tonsillectomy. Haematomata and other signs of wound haemorrhage and epistaxis have been reported with the use of ketorolac. Physicians should be aware of the pharmacological similarity of ketorolac to other non-steroidal anti-inflammatory drugs that inhibit cyclo-oxygenase and the risk of bleeding, particularly in the elderly.Methotrexate: Caution is advised when methotrexate is administered concurrently since some prostaglandin synthesis-inhibiting drugs have been reported to reduce the clearance of methotrexate, and thus possibly enhance its toxicity.
Drug Abuse and Dependence:Ketorolac is devoid of addictive potential. No withdrawal symptoms have been observed following abrupt discontinuation of ketorolac.
The following medicinal products are NOT to be co-administered with Ketorolac Injection:NSAIDs/Aspirin: Ketorolac should not be used with other NSAIDs including cyclooxygenase-2 selective inhibitors or in patients receiving aspirin because of the increased risk of inducing serious NSAID-related adverse effects (see section 4.3). Thromboxane: Ketorolac inhibits platelet aggregation, reduces thromboxane concentrations and prolongs bleeding time. Unlike the prolonged effects from aspirin, platelet function returns to normal within 24-48 hours after Ketorolac is discontinued.Anticoagulants: Ketorolac injection is contraindicated in combination with anti-coagulants, such as warfarin since co-administration may cause an enhanced anti-coagulant effect (see section 4.3). Although studies do not indicate a significant interaction between ketorolac and warfarin or heparin the concurrent use of ketorolac and therapy that affects haemostasis, including therapeutic doses of anticoagulation therapy (warfarin) prophylactic low-dose heparin (2500-5000 units 12-hourly) and dextrans may be associated with an increased risk of bleeding.Lithium: In patients receiving lithium, there is a possible inhibition of renal lithium clearance, leading to an increase in plasma lithium concentration with some prostaglandin synthesis-inhibiting drugs. Cases of increased lithium plasma concentrations during ketorolac therapy have been reported. Probenecid should not be administered concurrently with ketorolac because of decreased plasma clearance and volume of distribution of ketorolac leading to increases in ketorolac plasma concentrations and half-life. Mifepristone: NSAIDs should not be used for eight to twelve days after mifepristone administration as NSAIDs can reduce the effects of mifepristone.Oxpentifylline: When ketorolac is administered concurrently with oxpentifylline, there is an increased tendency to bleeding.
The following medicinal products in combination with Ketorolac, are to be co-administered with caution:Diuretics: Ketorolac Solution for injection reduced the diuretic response to furosemide, in normovolaemic healthy subjects by approximately 20%, so particular care should be taken in patients with cardiac decompensation. Co-administration with diuretics can lead to a reduced diuretic effect, and increase the risk of nephrotoxicity of NSAIDs.Diuretics and Antihypertensives: NSAIDs may reduce the effect of diuretics and antihypertensive medicinal products. The risk of acute renal insufficiency, which is usually reversible, may be increased in some patients with compromised renal function (e.g. dehydrated patients or elderly patients) when ACE inhibitors and/or angiotensin II receptor antagonists are combined with NSAIDs. Therefore, the combination should be administered with caution, especially in the elderly. Patients should be adequately titrated and consideration should be given to monitoring renal function after initiation of concomitant therapy, and periodically thereafter.Cardiac glycosides: NSAIDs may exacerbate cardiac failure, reduce GFR and increase plasma cardiac glycoside levels when co-administered with cardiac glycosides.Methotrexate: Caution is advised when methotrexate is administered concurrently, since some prostaglandin synthesis inhibiting drugs have been reported to reduce the clearance of methotrexate, and thus possibly enhance its toxicity. Ciclosporin: As with all NSAIDs caution is advised when ciclosporin is co-administered because of the increased risk of nephrotoxicity.Corticosteroids: As with all NSAIDs, caution should be taken when co-administering with cortico-steroids because of the increased risk of gastro-intestinal ulceration or bleeding (see section 4.4).Quinolone antibiotics: Animal data indicate that NSAIDs can increase the risk of convulsions associated with quinolone antibiotics. Patients taking NSAIDs and quinolones may have an increased risk of developing convulsions.Anti-platelet agents and selective serotonin reuptake inhibitors (SSRIs): There is an increased risk of gastrointestinal bleeding (see section 4.4) when anti-platelet agents and SSRIs are combined with NSAIDs.Tacrolimus: There is a possible risk of nephrotoxicity when NSAIDS are given with tacrolimus.Zidovudine: NSAIDs given with zidovudine increase the risk of haematological toxicity. There is evidence of an increased risk of haematoma in HIV(+) haemophiliacs receiving concurrent treatment with zidovudine and ibuprofen.Digoxin: Ketorolac tromethamine does not alter digoxin protein binding. In vitro studies indicated that at therapeutic concentrations of salicylate (300µg/ml), the binding of ketorolac was reduced from approximately 99.2% to 97.5%, representing a potential two-fold increase in unbound ketorolac plasma concentrations. Therapeutic concentrations of digoxin, warfarin, ibuprofen, naproxen, piroxicam, paracetamol, phenytoin and tolbutamide did not alter ketorolac protein binding. Ketorolac has been shown to reduce the need for concomitant opioid analgesia when it is given for the relief of postoperative pain.Oral administration of Ketorolac Tablets after a high-fat meal resulted in decreased peak and delayed time-to-peak concentrations of ketorolac by about 1 hour. Antacids did not affect the extent of absorption.There is no evidence in animal or human studies that ketorolac trometamol induces or inhibits the hepatic enzymes capable of metabolising itself or other drugs. Hence ketorolac would not be expected to alter the pharmacokinetics of other drugs due to enzyme induction or inhibition mechanisms.
Pregnancy:In view of the known effects of NSAIDs on the foetal cardiovascular system (risk of closure of the ductus arteriosus) ketorolac is contraindicated during pregnancy, labour or delivery. The safety of ketorolac during human pregnancy has not been established. There was no evidence of teratogenicity in rats or rabbits studied at maternally-toxic doses of ketorolac. Prolongation of the gestation period and/or delayed parturition were seen in the rat. Congenital abnormalities have been reported in association with NSAID administration in man, however these are low in frequency and do not follow any discernible pattern.Inhibition of prostaglandin synthesis may adversely affect the pregnancy and/or the embryo/foetal development. Data from epidemiological studies suggest an increased risk of miscarriage and of cardiac malformation and gastroschisis after use of a prostaglandin synthesis inhibitor in early pregnancy. The absolute risk for cardiovascular malformation was increased from less than 1%, up to approximately 1.5 %. The risk is believed to increase with dose and duration of therapy. In animals, administration of a prostaglandin synthesis inhibitor has been shown to result in increased pre- and post-implantation loss and embryo-foetal lethality. In addition, increased incidences of various malformations, including cardiovascular, have been reported in animals given a prostaglandin synthesis inhibitor during the organogenetic period. During pregnancy, all prostaglandin synthesis inhibitors may expose the foetus to: - cardiopulmonary toxicity (with premature closure of the ductus arteriosus and pulmonary hypertension);- renal dysfunction, which may progress to renal failure with oligo-hydroamniosis; the mother and the neonate, at the end of pregnancy, to:- possible prolongation of bleeding time, an anti-aggregating effect which may occur even at very low doses.- inhibition of uterine contractions resulting in delayed or prolonged labour.Ketorolac crosses the placenta to the extent of approximately 10%.See section 4.4 regarding female fertility.
Labour and Delivery:Ketorolac is contraindicated in labour and delivery because, through its prostaglandin synthesis inhibitory effect it may adversely affect foetal circulation and inhibit uterine contractions, thus increasing the risk of uterine haemorrhage.There may be increased bleeding tendency in both mother and child (see section 4.3)
Lactation:Ketorolac and its metabolites have been shown to pass into the foetus and milk of animals. Ketorolac has been detected in human milk at low concentrations therefore ketorolac is contra-indicated in mothers who are breast-feeding.
Post MarketingThe following undesirable effects may occur in patients receiving ketorolac; frequencies of reported events are not known, because they were reported voluntarily from a population of uncertain size.Gastro-intestinal disorders:The most commonly observed adverse events are gastrointestinal in nature. Peptic ulcers, ulcers, perforation or GI bleeding, sometimes fatal, particularly in the elderly, may occur (see section 4.4). Nausea, dyspepsia, abdominal pain/discomfort, haematemesis, stomatitis, dry mouth, oesophagitis, diarrhoea, eructation, constipation, flatulence, fullness, melaena, gastro-intestinal ulceration, rectal bleeding, ulcerative stomatitis, vomiting, pancreatitis, exacerbation of colitis and Crohn's disease (see section 4.4) have been reported following administration. Less frequently, gastritis has been observed.Blood and Lymphatic system disorders: Thrombocytopenia, purpura, neutropenia, agranulocytosis, aplastic anaemia, haemolytic anaemiaImmune System Disorders:Anaphylaxis, anaphylactoid reactions, anaphylactoid reactions like anaphylaxis, may have a fatal outcome, hypersensitivity reactions such as bronchospasm flushing, rash, hypotension, laryngeal oedema.These may also occur in individuals with a history of angioedema, bronchospastic reactivity (e.g. asthma and nasal polyps). Infection:Aseptic meningitis (especially in patients with existing autoimmune disorders, such as systemic lupus erythematosus, mixed connective tissue disease), with symptoms such as stiff neck, headache, nausea, vomiting , fever or disorientation (see section 4.4); Metabolic and nutrition disorders:Anorexia, hyponatraemia, hyperkalaemiaPsychiatric disorders:Abnormal thinking, depression, euphoria, insomnia, anxiety, nervousness, psychotic reactions, abnormal dreams, hallucinations, inability to concentrate, drowsiness, confusion, stimulation.Nervous system disorders: Dizziness, headache, paraesthesia, convulsions, abnormal taste, hyperkinesia.Eye disorders: Optic neuritis, abnormal vision, visual disturbancesEar disorders:Hearing loss, tinnitus, vertigoRenal and urinary disorders: Increased urinary frequency, oliguria, acute renal failure, haemolytic uraemic syndrome, flank pain (with or without haematuria +- azotemia), interstitial nephritis, urinary retention, nephrotic syndrome. As with other drugs that inhibit renal prostaglandin synthesis signs of renal impairment, such as, but not limited to elevations of creatinine and potassium can occur after one dose of ketorolac.Cardiac disorders:Bradycardia, palpitations, cardiac failureVascular disorders: Flushing, pallor, hypertension, oedema, hypotension, postoperative wound haemorrhage, haematoma.Clinical trial and epidemiological data suggest that use of coxibs and some NSAIDs (particularly at high doses) may be associated with a small increased risk of arterial thrombotic events (for example myocardial infarction or stroke). Although ketorolac has not shown to increase thrombotic events, such as myocardial infarction, there are insufficient data to exclude such a risk with ketorolac.Reproductive system and breast disorders:Female infertilityRespiratory, thoracic and mediastinal disorders: Dyspnoea, asthma, pulmonary oedema, epistaxis. Hepatobiliary disorders:Hepatitis, cholestatic jaundice and liver failure.Skin and subcutaneous tissue disorders:pruritus, urticaria, purpura, angiodema, exfoliative dermatitis, maculopapular rash, sweating, bullous reactions including Stevens-Johnson syndrome and Toxic Epidermal Necrolysis (very rare). Additionally erythema multiforme and skin photosensitivity has been observed.Musculoskeletal and Connective Tissue Disorders:Myalgia, functional disorders,General Disorders and Administration Site Condition:Excessive thirst, asthenia, weight gain, fever, injection site reactions and pain, chest pain, malaise, fatigue.Investigations:Bleeding time prolonged, serum urea increased and creatinine increased, abnormal liver function,Laboratory AbnormalitiesSee Section Post Marketing (Undesirable Effects).
Reporting of suspected adverse reactionsReporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard.
Symptoms and signsSingle overdoses of Ketorolac have been variously associated with abdominal pain, nausea, vomiting, hyperventilation, peptic ulcers and/or erosive gastritis and renal dysfunction which have resolved after discontinuation of dosing. Gastrointestinal bleeding may occur. Hypertension, acute renal failure, respiratory depression and coma may occur after the ingestion of NSAIDs but are rare. Headache, epigastric pain, disorientation, excitation, drowsiness, dizziness, tinnitus and fainting have also been observed. Rare cases of diarrhoea and occasional convulsions have been reported. Anaphylactoid reactions have been reported with therapeutic ingestion of NSAIDs and may occur following an overdose.
Treatment:Patients should be managed by symptomatic and supportive care following NSAIDs overdose. There are no specific antidotes. Dialysis does not significantly clear ketorolac from the blood stream. Within one hour of ingestion of a potentially toxic amount, activated charcoal should be considered. Alternatively, in adults, gastric lavage should be considered within one hour of ingestion of a potentially life-threatening overdose. Good urine output should be ensured. Renal and liver function should be closely monitored. Patients should be observed for at least four hours after ingestion of potentially toxic amounts. Frequent or prolonged convulsions should be treated with intravenous diazepam. Other measures may be indicated by the patient's clinical condition.
IntramuscularFollowing intramuscular administration, ketorolac was rapidly and completely absorbed. A mean peak plasma concentration of 2.2μg/ml occurred an average of 50 minutes after a single 30mg dose. Age, kidney and liver function affect terminal plasma half-life and mean total clearance as outlined in the table below (estimated from a single 30mg IM dose of ketorolac).
|Type of subjects||Total clearance (l/hr/kg) mean (range)||Terminal half-life (hrs) mean (range)|
|Normal subjects (n = 54)||0.023 (0.010 - 0.046)||5.3 (3.5 - 9.2)|
|Patients with hepatic dysfunction (n = 7)||0.029 (0.013 - 0.066)||5.4 (2.2 - 6.9)|
|Patients with renal impairment (n = 25) (serum creatinine 160 - 430 micromol/l)||0.016 (0.005 - 0.043)||10.3 (5.9 - 19.2)|
|Renal dialysis patients (n = 9)||0.016 (0.003 - 0.036)||13.6 (8.0 - 39.1)|
|Healthy elderly subjects (n = 13) (mean age 72)||0.019 (0.013 - 0.034)||7.0 (4.7 - 8.6)|
IntravenousIntravenous administration of a single 10mg dose of ketorolac resulted in a mean peak plasma concentration of 2.4μg/ml at an average of 5.4 minutes after dosing. The terminal plasma elimination half-life was 5.1 hours, average volume of distribution 0.15 l/kg, and total plasma clearance 0.35ml/min/kg.The pharmacokinetics of ketorolac in man following single or multiple doses are linear. Steady-state plasma levels are achieved after dosing every six hours for one day. No changes in clearance occurred with chronic dosing. The primary route of excretion of ketorolac and its metabolites is renal: 91.4% (mean) of a given dose being found in the urine and 6.1% (mean) in the faeces.More than 99% of the ketorolac in plasma is protein-bound over a wide concentration range.
Beacon Pharmaceutical Limited
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