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tions are given into the anterolateral aspect of the thigh, through clothing if necessary. The accompanying Patient Information Leaflet and Wrap Label should also be reviewed with the patient. Adrenaclick is capable of delivering one dose of either 0.15 mg or 0.3 mg (0.15 mL or 0.3 mL) of epinephrine. This DOSAGE DOSAGE AND ADMINISTRATION ADMINISTRATION dose is available for auto-injection by the patient.AND ® ® The physician prescribes Adrenaclick should review this Information in detail who prescribes Adrenaclick review this Prescribing Prescribing Information detail with the Selection of the appropriate Adrenaclick dosage strength is determined according to patient insert body weight. patient. This review should include the proper use of Adrenaclick to ensure that subcutaneous or intramuscular injec0.15the mganterolateral For use byaspect patientsofwho weigh through 15 - 30 clothing kilogramsif (approximately - 66 pounds) Patient tionsAdrenaclick are given into the thigh, necessary. The the anterolateral The33accompanying accompanying Patient Adrenaclick 0.3and mgWrap ForLabel use by patients who weigh 30with kilograms (approximately 66 pounds) or greater Information Leaflet and Wrap Label should also reviewed with patient. Information Leaflet should also bebereviewed thethe patient. The usual dose of epinephrine for allergic emergencies in0.15 patients weigh 30 mL kilograms or greater is 0.3 mg This (0.3 Adrenaclick capable delivering one dose dose either 0.15 mg or who of epinephrine. ofof delivering one ofof either mg 0.3 mg (0.15 or 0.3 mL) is capable mL) ofis epinephrine. dose available for auto-injection auto-injection by by the the patient. patient. Since the ofdoses of epinephrine delivereddosage from Adrenaclick are fixed, the physician should consider other forms of Selection appropriate Adrenaclick dosage strengthisisdetermined determined according patientbody bodyweight. weight. the appropriate Adrenaclick strength according totopatient injectable epinephrine if doses lower than those available from Adrenaclick are felt to be necessary. The prescribing Adrenaclick mg For use patients kilograms (approximately 33 66 pounds) 0.15 by who weigh 15 30 kilograms (approximately 33 66 pounds) physician should carefully assess each patient to determine the most appropriate dose of epinephrine, recognizing the Adrenaclicknature use by patients kilograms (approximately66 66pounds) pounds)ororgreater greater 0.3 mgof theForreactions kilograms (approximately for whichwho thisweigh drug 30 is30being prescribed. life-threatening The usual dose of epinephrine for allergic emergencies in patients who weigh 30 kilograms or greater is mg mg (0.3 (0.3 Patients should be instructed to periodically visually inspect the epinephrine solution for particulate 0.3 matter and mL) ofof epinephrine. epinephrine. discoloration. If the solution contains particulate matter or develops a pinkish color or becomes darker than slightly yellow,the thedoses patientofshould immediately contact physicianare for fixed, a replacement, sinceshould these changes that the Since epinephrine delivered fromtheir Adrenaclick the physician considerindicate other forms of effectiveness of the drug productlower maythan be decreased. injectable epinephrine if doses those available from Adrenaclick are felt to be necessary. necessary. The prescribing physician should carefully assess each patient to determine the most appropriate dose of epinephrine, recognizing the life-threatening nature ofof the the reactions reactionsfor forwhich whichHOW thisdrug drug beingprescribed. prescribed. this isisbeing life-threatening nature SUPPLIED Patients be instructed to periodically inspect the epinephrine solution forinjection, particulate and should particulate Adrenaclick is a patient (or caregiver) actuated visually product that contains 1.1 mL of epinephrine USPmatter (1 mg/mL), discoloration. IfIf the solution contains matter develops pinkish darker thecan solution contains particulate matter develops aaVOLUME pinkish color color orIS or becomes becomes darker than slightly of which one dose be delivered byparticulate auto-injection. THEororREMAINING THAT LEFT AFTER THISthan FIXEDslightly DOSE yellow, patient should immediatelycontact contact theirphysician physician a WITH replacement, since changes indicate should immediately their forfora replacement, since these changes indicate thatthat the CANNOTtheBEpatient FURTHER ADMINISTERED AND SHOULD BE DISCARDED THE DEVICE ASthese OUTLINED IN THE PATIENT the effectiveness the drug product be decreased. effectiveness ofLEAFLET. theofdrug product may may be decreased. INFORMATION Adrenaclick 0.15 mg is available in a Two-Pack carton, NDC 52054-803-02, containing two Adrenaclick 0.15 mg HOW SUPPLIED SUPPLIED HOW auto-injectors. Adrenaclick patient (or caregiver) actuated carton, productNDC that 52054-804-02, contains 1.1 mLcontaining of epinephrine injection, USP Adrenaclick is0.3a mg is available in a Two-Pack two Adrenaclick 0.3(1mgmg/mL), which auto-injection. THETHE REMAINING VOLUME THATTHAT IS LEFT AFTERAFTER THIS FIXED DOSE of which one onedose dosecan canbebedelivered deliveredbyby auto-injection. REMAINING VOLUME IS LEFT THIS FIXED auto-injectors. CANNOT BE FURTHER ADMINISTERED AND SHOULD DISCARDED WITH THE DEVICE AS OUTLINED THE PATIENT DOSE CANNOT BE FURTHER ADMINISTERED AND BE SHOULD BE DISCARDED WITH THE DEVICE ASINOUTLINED IN INFORMATION LEAFLET. THE PATIENT INFORMATION LEAFLET. PROTECT FROM LIGHT. STORE AT ROOM TEMPERATURE, 20°-25°C (68°-77°F) WITH EXCURSIONS PERMITTED Adrenaclick 0.15 0.15 mg mg available(59°-86°F). Two-Pack carton,NDC NDC52054-803-02, 52054-803-02, containing twoAdrenaclick Adrenaclick0.15 0.15 available ininaaTwo-Pack carton, two mgmg PROTECT FROM FREEZING. DOcontaining NOT REFRIGERATE. TO isis15°-30°C auto-injectors. auto-injectors. ® PRESCRIBING INFORMATION PRESCRIBING INFORMATION each unit delivers 0.15 mg or 0.3 mg of epinephrine ® DESCRIPTION FPO 51006-04 FPO each unit delivers 0.15 mg or 0.31.1mg epinephrine ® auto-injector Adrenaclick contains mLofepinephrine injection, USP (1 mg/mL), from which one dose of either 0.15 mg (0.15 mL) or 0.3 mg (0.3 mL) each is available for use by injection. The dose is administered by auto-injection ® as directed. The remaining volume is not available for use and after the prepares fires0.3Adrenaclick each unitpatient delivers 0.15 and mg or mg of epinephrine should be discarded. See PATIENT DIRECTIONS FOR USE on the accompanying Patient Information Leaflet. 51006-04 This single, available dose of epinephrine injection, USP contains either 0.15 mg or 0.3 mg l-epinephrine, sodium DESCRIPTION DESCRIPTION chloride, chlorobutanol and sodium bisulfite, all sealed under nitrogen. ® containscatecholamine. injection, USP oneonedose ofasof either 0.15 Adrenaclick contains 1.1 mL epinephrine epinephrine injection, USP(1(1mg/mL), mg/mL),from fromwhich which dose either 0.15 Epinephrine isauto-injector a sympathomimetic Its naturally occurring l-isomer, which is twenty times active as (0.15 mL) mL)isorobtained 0.3 mg mL) each by by auto-injection mg (0.15 mgin(0.3 (0.3 mL) each isavailable availablefor foruse use byinjection. injection.The Thedose doseisracemate. isadministered administered auto-injection the d-isomer, pure form byisseparation from thebysynthetically produced ® ® andand after the patient patient prepares preparesand andfires firesAdrenaclick Adrenaclick asasdirected. directed. The The remaining remainingvolume volumeisisnotnotavailable availableforforuseuse Chemically, epinephrine 1-(3,4-dihydroxyphenyl)-2-(methylamino)ethanol withPatient the following structure: Leaflet. PATIENT DIRECTIONS FOR FOR USE USE on onthe theaccompanying accompanying Patient Information should be discarded. SeeisPATIENT DIRECTIONS Information Leaflet. 0.15 mgmg or 0.3 mg mg l-epinephrine, sodium This single, single, available available dose doseofofepinephrine epinephrineinjection, injection,USP USPcontains containseither either 0.15 or 0.3 l-epinephrine, sodium chloride, chlorobutanol and sodium bisulfite, bisulfite, all all sealed sealedunder undernitrogen. nitrogen. Epinephrine is aa sympathomimetic sympathomimeticcatecholamine. catecholamine. Its Itsnaturally naturallyoccurring occurringl-isomer, l-isomer,which whichisistwenty twentytimes timesasas active active as as the d-isomer, is obtained inin pure pure form form by byseparation separationfrom fromthe thesynthetically syntheticallyproduced producedracemate. racemate. Chemically, epinephrine is 1-(3,4-dihydroxyphenyl)-2-(methylamino)ethanol 1-(3,4-dihydroxyphenyl)-2-(methylamino)ethanol with with the the following followingstructure: structure: Epinephrine deteriorates rapidly on exposure to air or light, turning pink from oxidation to adrenochrome and brown from the formation of melanin. Epinephrine solutions thatOH show evidence of discoloration should be discarded. Adrenaclick contains no latex. HO C–CH2NHCH3 CLINICAL PHARMACOLOGY H HO ©2013 AllAll rights reserved. ThisThis product andand the the ©2013Amedra AmedraPharmaceuticals PharmaceuticalsLLC, LLC,Horsham, Horsham,PA.PA. rights reserved. product use more of of United States Patents 5,358,489; usethereof thereofisisproprietary proprietaryand andprotected protectedunder underoneoneor or more United States Patents 5,358,489; 5,833,669; 7,905,352; 7,621,891; 7,927,303; 5,833,669;5,665,071; 5,665,071;5,695,472; 5,695,472;7,297,136; 7,297,136; 7,905,352; 7,621,891; 7,927,303; Printed 5,540,664; in5,540,664; USA Revised January, 2013 7,931,618; patents in countries other thanthan the the U.S.U.S. 7,931,618;8,187,224; 8,187,224; and/orrelated related patents in countries other Forand/or inquiries call 1-888-894-6528 Epinephrine is the drug of choice for the emergency treatment of severe allergic reactions (Type I) to allergens, such as in certain insect venoms, foods, or It canturning also bepink usedfrom in the treatment ofadrenochrome anaphylaxis ofand unknown those presentdeteriorates Epinephrine rapidly on exposure to drugs. air or light, oxidation to adrenochrome brown causethe (idiopathic exercise-induced anaphylaxis. when given intramuscularly or subcutaformation ofof melanin. solutions that evidence should from formationanaphylaxis) melanin.orEpinephrine solutions thatshow showEpinephrine, evidenceofofdiscoloration discoloration shouldbebediscarded. discarded. neously, has a rapid onset and short duration of action. Epinephrine acts on both alpha and beta adrenergic receptors. Adrenaclick contains no latex. Through its action on alpha adrenergic receptors, epinephrine lessens the vasodilation and increased vascular permereaction andPHARMACOLOGY can lead to loss of intravascular fluid volume and hypotension. ability that occurs during an anaphylacticCLINICAL CLINICAL PHARMACOLOGY Through its action on beta adrenergic receptors, epinephrine causes bronchial smooth muscle relaxation that helps treatment of severe Epinephrine is the drug of choice for the emergency reactions (Type I) toalso allergens, such as alleviate bronchospasm, wheezing, and dyspnea that may occur during allergic anaphylaxis. Epinephrine helps alleviate can also be be used used those present in certain insect venoms, ItItcan also in the treatment of anaphylaxissymptoms of unknown pruritus, urticaria, and angioedema, andfoods, may or bedrugs. effective in relieving gastrointestinal and genitourinary of or exercise-induced anaphylaxis. when given intramuscularly intramuscularly cause (idiopathic anaphylaxis) anaphylaxis. when given or subcutabecause of its relaxer effects on the smooth muscle Epinephrine, ofEpinephrine, the stomach, intestine, uterus and urinary bladder. anaphylaxis Epinephrine acts acts on both alpha and beta adrenergic receptors. neously, has a rapid onset and short duration of action. Epinephrine Through its action on alpha adrenergic receptors, epinephrine lessens the vasodilation and increased vascular permeINDICATIONS AND USAGE ability that occurs during an anaphylactic reaction and can lead to loss of intravascular fluid volume and hypotension. Adrenaclick (epinephrine USP) is in the emergency treatmentsmooth of severe allergic reactions Through its action on beta betainjection, adrenergic receptors, epinephrine causes bronchial muscle relaxation that(Type helpsI) adrenergic indicated includingbronchospasm, anaphylaxis towheezing, stingingandinsects Hymenoptera, which includes bees,also wasps, alleviate dyspnea(e.g. thatorder may during Epinephrine helps hornets, alleviate may occur occur during anaphylaxis. anaphylaxis. drugs, yellow jackets andand fireangioedema, ants), and biting insects (e.g. triatoma, mosquitos), allergenand immunotherapy, pruritus, urticaria, and may be effective in relieving gastrointestinal genitourinary foods, symptoms of diagnostic testing (e.g. radiocontrast media), and ofother allergens, as welluterus asuterus anaphylaxis tobladder. unknown becausesubstances itsrelaxer relaxer effects thesmooth smooth muscle ofthethestomach, stomach,intestine, intestine, urinary bladder. anaphylaxis ofof its effects ononthe muscle andandurinary substances (idiopathic anaphylaxis) or exercise-induced anaphylaxis. Adrenaclick is intended for immediate administration in patients with a history INDICATIONS of anaphylactic reactions. Selection of the appropriate dosage strength is ANDUSAGE USAGE INDICATIONS AND determined according to patient body weight (See DOSAGE AND ADMINISTRATION section). Adrenaclick (epinephrine (epinephrine injection, injection, USP) USP) isis indicated indicated in the emergency treatment of severe allergic reactions (Type I) within insects minutes (e.g. afterorder exposure and consist of flushing, Such reactions may occur including anaphylaxis Hymenoptera, which includes apprehension, bees, wasps, syncope, hornets, anaphylaxis to stinging Hymenoptera, tachycardia, thready or unobtainable pulse associated with a fallmosquitos), in blood pressure, vomiting, yellow jackets and fire ants), and biting insects (e.g. triatoma, allergenconvulsions, immunotherapy, foods,diarrhea drugs, and abdominal cramps, involuntary voiding, wheezing, dyspnea due to laryngeal spasm, pruritus, rashes, urticaria, diagnostic testing substances (e.g. radiocontrast media), and other allergens, as well as anaphylaxis to unknown or angioedema. Adrenaclick is designed as emergency supportive therapy only and is not a replacement or substisubstances (idiopathic anaphylaxis) or exercise-induced anaphylaxis. Adrenaclick is intended for immediate anaphylaxis. Adrenaclick immediate tute for immediate medicalwith care.a history of anaphylactic reactions. administration in patients reactions. Selection Selection ofof the the appropriate appropriate dosage strength is determined accordingtotopatient patientbody bodyweight weight(See (See DOSAGE ADMINISTRATION section). determined according DOSAGE ANDAND ADMINISTRATION section). Printed in USA Such reactions may occur within minutes after exposure and consist of flushing, flushing, apprehension, apprehension, syncope, tachycardia, thready or unobtainable pulse associated with a fall in blood blood pressure, pressure, convulsions, convulsions, vomiting, diarrhea and abdominal abdominalcramps, cramps,involuntary involuntary voiding, wheezing, dyspnea to laryngeal rashes, voiding, wheezing, dyspnea due todue laryngeal spasm, spasm, pruritus, pruritus, rashes, urticaria, urticaria, or angioedema. designed supportive as emergency only and or is substinot a or angioedema. Adrenaclick isAdrenaclick designed asisemergency therapysupportive only and istherapy not a replacement replacement or substitute immediate medical care. tute for immediate medicalforcare. Rx only. % Adrenaclick 0.3 0.3 mg mg isis available availableininaaTwo-Pack Two-Packcarton, carton, NDC 52054-804-02,containing containingtwo twoAdrenaclick Adrenaclick0.30.3mgmg NDC 52054-804-02, auto-injectors. auto-injectors. PROTECTFROM FROMLIGHT. LIGHT.STORE STOREAT ATROOM ROOM TEMPERATURE, TEMPERATURE, 20°-25°C (68°-77°F) WITH EXCURSIONS PROTECT EXCURSIONS PERMITTED PERMITTED (59°-86°F). PROTECT PROTECTFROM FROM FREEZING. FREEZING. DO DONOT NOT REFRIGERATE. REFRIGERATE. 15°-30°C (59°-86°F). TO 15°-30°C Rx only. only. % Manufactured for and Distributed by: Amedra Pharmaceuticals LLC, Horsham, PA 19044 ©2013 Amedra Pharmaceuticals LLC, Horsham, PA. All rights reserved. This product and the use thereof is proprietary and protected under one or more of United States Patents 5,358,489; 5,540,664; 5,833,669; 5,665,071; 5,695,472; 7,297,136; 7,905,352; 7,621,891; 7,927,303; 7,931,618; 8,187,224; and/or related patents in countries other than the U.S. Manufactured for and by: Amedra Pharmaceuticals LLC, Horsham, PA 19044 Manufactured forDistributed and Distributed by: Amedra Pharmaceuticals LLC, Horsham, PA 19044 RevisedJanuary, April, 2013 Revised 2013 For 1-888-894-6528 For inquiries inquiries call 1-888-894-6528 CONTRAINDICATIONS There are no absolute contraindications to the use of epinephrine in a life-threatening allergic reaction. (3) Drug Interactions Patients who receive epinephrine while concomitantly taking cardiac glycosides or diuretics should be observed carefully for the development of cardiac arrhythmias. WARNINGS The effects of epinephrine may be potentiated by tricyclic antidepressants, monoamine oxidase inhibitors, sodium levothyroxine, and certain antihistamines, notably chlorpheniramine, tripelennamine, and diphenhydramine. Adrenaclick should only be injected into the anterolateral aspect of the thigh. Accidental injection into the hands or feet may result in loss of blood flow to the affected area and should be avoided. DO NOT INJECT INTO BUTTOCK. If there is an accidental injection into these areas, advise the patient to inform the healthcare provider of the accidental injection when he/she goes to the nearest emergency room for further treatment of anaphylaxis. The cardiostimulating and bronchodilating effects of epinephrine are antagonized by beta-adrenergic blocking drugs, such as propranolol. The vasoconstricting and hypertensive effects are antagonized by alpha-adrenergic blocking drugs, such as phentolamine. Ergot alkaloids and phenothiazines may also reverse the pressor effects of epinephrine. Avoid possible inadvertent intravascular administration. Large doses or accidental intravenous injection of epinephrine may result in cerebral hemorrhage due to a sharp rise in blood pressure. DO NOT INJECT INTRAVENOUSLY. Rapidly acting vasodilators can counteract the marked pressor effects of epinephrine if there is such inadvertent administration. Epinephrine is the preferred treatment for serious allergic reactions or other emergency situations even though this product contains sodium bisulfite, a sulfite that may, in other products, cause allergic-type reactions including anaphylactic symptoms or life-threatening or less severe asthmatic episodes in certain susceptible persons. The alternatives to using epinephrine in a life-threatening situation may not be satisfactory. The presence of a sulfite in this product should not deter administration of the drug for treatment of serious allergic or other emergency situations, even if the patient is sulfite-sensitive. Epinephrine should be administered with caution to patients with cardiac arrhythmias, coronary artery or organic heart disease, or hypertension. In patients with coronary insufficiency or ischemic heart disease, epinephrine may precipitate or aggravate angina pectoris as well as produce ventricular arrhythmias. It should be recognized that the presence of these conditions is not a contraindication to epinephrine administration in an acute, life-threatening situation. Epinephrine is light sensitive and should be stored in the carrying-case provided. Store at room temperature (20º-25ºC/68º-77ºF) with excursions permitted to 15º-30ºC (59º-86ºF). Do not refrigerate; protect from freezing. Patients should periodically check the solution in Adrenaclick for any discoloration and/or precipitates. If the solution is discolored or contains a precipitate, the patient should replace their Adrenaclick. PRECAUTIONS (1) General Adrenaclick is not intended as a substitute for immediate medical care. In conjunction with the administration of epinephrine, the patient should seek appropriate medical care. More than two sequential doses of epinephrine should only be administered under direct medical supervision. Epinephrine is essential for the treatment of anaphylaxis. Patients with a history of severe allergic reactions should be instructed about the circumstances under which epinephrine should be used (See INDICATIONS AND USAGE Section). It should be determined that the patient is at risk of future anaphylaxis, since there are some concerns in specific patients with epinephrine administration. (a) Epinephrine should be used with caution in patients with cardiac arrhythmias, coronary artery or organic heart disease, hypertension, or in patients who are on medications that may sensitize the heart to arrhythmias, e.g., digitalis, diuretics, or anti-arrhythmics. In such patients, epinephrine may precipitate or aggravate angina pectoris as well as produce ventricular arrhythmias. (b) The effects of epinephrine may be potentiated by tricyclic antidepressants and monoamine oxidase inhibitors. (c) Some patients may be at greater risk of developing adverse reactions after epinephrine administration. These include patients with hyperthyroidism, cardiovascular disease, hypertension, diabetes, and elderly individuals, and pregnant women. It must be noted that, despite these concerns, epinephrine is essential for the treatment of anaphylaxis. Therefore, patients with these conditions, or any other person who might be in a position to administer epinephrine to a patient with these conditions experiencing anaphylaxis, should be instructed about the circumstances under which epinephrine should be used. (2) Information for Patients Complete patient information, including dosage, directions for proper administration, and precautions, can be found inside each Adrenaclick package within the Patient Information Leaflet. Epinephrine may produce symptoms and signs that include an increase in pulse rate, the sensation of a more forceful heartbeat, palpitations, a throbbing headache, pallor, feelings of overstimulation, anxiety, weakness, shakiness, dizziness, or nausea. These signs and symptoms usually subside rapidly, especially with rest, quiet, and recumbency. Patients with hypertension or hyperthyroidism may develop more severe or persistent effects, and patients with coronary artery disease could experience angina. Patients with diabetes may develop increased blood glucose levels following epinephrine administration. Patients with Parkinson’s disease may notice a temporary worsening of symptoms. (4) Carcinogenesis, Mutagenesis, Impairment of Fertility There are no data from either animal or human studies regarding the carcinogenicity or mutagenicity of epinephrine, and no studies have been conducted to determine its potential for the impairment of fertility. This should not prevent the use of epinephrine under the conditions noted under INDICATIONS AND USAGE section. (5) Pregnancy Pregnancy Category C. Epinephrine has been shown to have developmental effects in rabbits at a subcutaneous dose of 1.2 mg/kg (approximately 30 times the maximum recommended daily subcutaneous or intramuscular dose on a mg/m2 basis), in mice at a subcutaneous dose of 1 mg/kg (approximately 7 times the maximum recommended daily subcutaneous or intramuscular dose on a mg/m2 basis), and in hamsters at a subcutaneous dose of 0.5 mg/kg (approximately 5 times the maximum recommended daily subcutaneous or intramuscular dose on a mg/m2 basis). These effects were not seen in mice at a subcutaneous dose of 0.5 mg/kg (approximately 3 times the maximum recommended daily subcutaneous or intramuscular dose on a mg/m2 basis). Although there are no adequate and well-controlled studies in pregnant women, epinephrine crosses the placenta and could lead to fetal anoxia, spontaneous abortion or both. Therefore, epinephrine should be used in pregnancy only if the potential benefit justifies the potential risk to the fetus. ADVERSE REACTIONS Adverse reactions to epinephrine include transient, moderate anxiety; apprehensiveness; restlessness; tremor; weakness; dizziness; sweating; palpitations; pallor; nausea and vomiting; headache, and/or respiratory difficulties. These symptoms occur in some persons receiving therapeutic doses of epinephrine, but are more likely to occur in patients with hypertension or hyperthyroidism. Large doses of epinephrine can cause acute hypertension. Arrhythmias, including fatal ventricular fibrillation, have been reported, particularly in patients with underlying cardiac disease or those receiving certain drugs [see (3) Drug Interactions]. Rapid rises in blood pressure have produced cerebral hemorrhage, particularly in elderly patients with cardiovascular disease. Angina may occur in patients with coronary artery disease. The potential for epinephrine to produce these types of adverse reactions does not contraindicate its use in an acute, life-threatening allergic reaction. OVERDOSAGE Epinephrine is rapidly inactivated in the body, and treatment following overdose with epinephrine is primarily supportive. If necessary, pressor effects may be counteracted by rapidly acting vasodilators or alpha-adrenergic blocking drugs. If prolonged hypotension follows such measures, it may be necessary to administer another pressor drug. Overdosage of epinephrine may produce extremely elevated arterial pressure, which may result in cerebrovascular hemorrhage, particularly in elderly patients. If an epinephrine overdose induces pulmonary edema that interferes with respiration, treatment consists of a rapidly acting alpha-adrenergic blocking drug and/or respiratory support. Epinephrine overdosage can also cause transient bradycardia followed by tachycardia, and these may be accompanied by potentially fatal cardiac arrhythmias. Premature ventricular contractions may appear within one minute after injection and may be followed by multifocal ventricular tachycardia (prefibrillation rhythm). Subsidence of the ventricular effects may be followed by atrial tachycardia and occasionally by atrioventricular block. Treatment of arrhythmias consists of administration of a beta-adrenergic blocking drug such as propranolol. Overdosage sometimes results in extreme pallor and coldness of the skin, metabolic acidosis, and kidney failure. Suitable corrective measures must be taken in such situations.