twinject
Pharmaranks rates Twinject 3.5/5 for recall safety — an independent score from its FDA recall history and its manufacturer's record. Twinject (Epinephrine) is a catecholamine used to treat Airway Obstruction, Anaphylaxis, Bradycardia, Bronchial Spasm.
Epinephrine · by Impax
Based on 1 source · Recall-safety score from FDA recall history — this product's own recalls and its manufacturer's record. Not an efficacy or quality rating. methodology →
Key facts
- Active ingredient
- Epinephrine
- Drug class
- Catecholamine
- Form
- Injectable
- Strength
- Epinephrine EQ 0.15MG/DELIVERY · Epinephrine EQ 0.3MG/DELIVERY
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- airway obstruction, anaphylaxis, bradycardia
- Manufacturer
- Impax
- What the pharmacy pays
- ~$3898.29 for 30 — not your price
- FDA application
- NDA020800
What is Twinject?
From the FDA label:Epinephrine injection, USP 0.3 mg and 0.15 mg is an auto-injector and a combination product containing drug and device components. Each epinephrine injection, USP 0.3 mg delivers a single dose of 0.3 mg epinephrine from epinephrine injection, USP (0.3 mL) in a sterile solution. Each epinephrine injection, USP 0.15 mg delivers a single dose of 0.15 mg epinephrine from epinephrine injection, USP (0.15 mL) in a sterile solution. Epinephrine injection, USP 0.3 mg and epinephrine injection, USP 0.15 mg each contain 1.1 mL of epinephrine solution. 0.3 mL and 0.15 mL epinephrine solution are dispensed for epinephrine injection, USP 0.3 mg and epinephrine injection, USP 0.15 mg, respectively, when activated. The solution remaining after activation is not available for future use and should be discarded. Each 0.3 mL in epinephrine injection, USP 0.3 mg contains 0.3 mg epinephrine, 2.6 mg sodium chloride, not more than 1.5 mg chlorobutanol, 0.45 mg sodium bisulfite, hydrochloric acid and sodium hydroxide to adjust pH, and water for injection. The pH range is 2.2-5.0. Each 0.15 mL in epinephrine injection, USP 0.15 mg contains 0.15 mg epinephrine, 1.3 mg sodium chloride, not more than 0.75 mg chlorobutanol, 0.225 sodium bisulfite, hydrochloric acid and sodium hydroxide to adjust pH, and water for injection. The pH range is 2.2-5.0. Epinephrine is a sympathomimetic catecholamine.…
How to use
Patients greater than or equal to 30 kg (66 lbs): 0.3 mg (2) Patients 15 to 30 kg (33 lbs-66 lbs): 0.15 mg (2) Inject intramuscularly or subcutaneously into the anterolateral aspect of the thigh, through clothing if necessary. Each device is a single-dose injection. (2) 2.1 Recommended Dosage According to Patient Body Weight Patients greater than or equal to 30 kg (approximately 66 pounds or more): 0.3 mg Patients 15 kg to 30 kg (33 pounds to 66 pounds): 0.15 mg 2.2 Administration Instructions Inject the single-dose epinephrine injection intramuscularly or subcutaneously into the anterolateral aspect of the thigh, through clothing if necessary. Do not inject intravenously, and do not inject into buttocks, into digits, hands or feet [see Warnings and Precautions (5.2)]. Instruct caregivers of young children who are prescribed an epinephrine injection and who may be uncooperative and kick or move during an injection to hold the leg firmly in place and limit movement prior to and during an injection [see Warnings and Precautions (5.2)] . Each epinephrine injection is a single-dose of epinephrine injection for single use. Since the doses of epinephrine delivered from epinephrine injection are fixed, consider using other forms of injectable epinephrine if doses lower than 0.15 mg are deemed necessary. With severe persistent anaphylaxis, repeat injections with an additional…
Side effects
Due to the lack of randomized, controlled clinical trials of epinephrine for the treatment of anaphylaxis, the true incidence of adverse reactions associated with the systemic use of epinephrine is difficult to determine. Adverse reactions reported in observational trials, case reports, and studies are listed below. Common adverse reactions to systemically administered epinephrine include 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 [see Warnings and Precautions (5.5)] . Cardiovascular Reactions Arrhythmias, including fatal ventricular fibrillation, have been reported, particularly in patients with underlying cardiac disease or those receiving certain drugs [see Warnings and Precautions (5.5) and Drug Interactions (7)] . Rapid rises in blood pressure have produced cerebral hemorrhage, particularly in elderly patients with cardiovascular disease [see Warnings and Precautions (5.5)] . Angina may occur in patients with coronary artery disease [see Warnings and Precautions (5.5)] . Rare cases of stress cardiomyopathy have been reported in patients treated with epinephrine. Reactions from Accidental…
Warnings
Important safety information
In conjunction with use, seek immediate medical or hospital care. ( 5.1 ) Do not inject intravenously, into buttock, or into digits, hands, or feet. ( 5.2 ) To minimize the risk of injection related injury, hold the child’s leg firmly in place and limit movement prior to and during injection when administering to young children. ( 5.2 ) Rare cases of serious skin and soft tissue infections have been reported following epinephrine injection. Advise patients to seek medical care if they develop signs or symptoms of infection. ( 5.3 ) The presence of a sulfite in this product should not deter use. ( 5.4 ) Administer with caution in patients with heart disease; may aggravate angina pectoris or produce ventricular arrhythmias. ( 5.5 ) 5.1 Emergency Treatment Epinephrine injection is intended for immediate administration as emergency supportive therapy and is not intended as a substitute for immediate medical care. In conjunction with the administration of epinephrine, the patient should seek immediate medical or hospital care. More than two sequential doses of epinephrine should only be administered under direct medical supervision [see Indications and Usage (1), Dosage and Administration (2) and Patient Counseling Information (17)] . 5.2 Injection-Related Complications Epinephrine injection should only be injected into the anterolateral aspect of the thigh [see Dosage and Administration (2) and Patient Counseling Information (17)] . Do not inject intravenously Large doses or accidental intravenous injection of epinephrine may result in cerebral hemorrhage due to a sharp rise in blood pressure. Rapidly acting vasodilators can counteract the marked pressor effects of epinephrine if there is such inadvertent administration. Do not inject into buttock Injection into the buttock may not provide effective treatment of anaphylaxis. Advise the patient to go immediately to the nearest emergency room for further treatment of anaphylaxis. Additionally, injection into the buttock has been associated with the development of Clostridial infections (gas gangrene). Cleansing with alcohol does not kill bacterial spores, and therefore, does not lower the risk. Do not inject into digits, hands or feet Since epinephrine is a strong vasoconstrictor, accidental injection into the digits, hands or feet may result in loss of blood flow to the affected area. Advise the patient to go immediately to the nearest emergency room and to inform the healthcare provider in the emergency room of the location of the accidental injection. Treatment of such inadvertent administration should consist of vasodilation, in addition to further appropriate treatment of anaphylaxis [see Adverse Reactions (6)] . Hold leg firmly during injection Lacerations, bent needles, and embedded needles have been reported when epinephrine has been injected into the thigh of young children who are uncooperative and kick or move during an injection. To minimize the risk of injection related injury when administering, hold the child’s leg firmly in place and limit movement prior to and during injection. 5.3 Serious Infections at the Injection Site Rare cases of serious skin and soft tissue infections, including necrotizing fasciitis and myonecrosis caused by Clostridia (gas gangrene), have been reported at the injection site following epinephrine injection for anaphylaxis. Clostridium spores can be present on the skin and introduced into the deep tissue with subcutaneous or intramuscular injection. While cleansing with alcohol may reduce presence of bacteria on the skin, alcohol cleansing does not kill Clostridium spores. To decrease the risk of Clostridium infection, do not inject epinephrine injection into the buttock [see Warnings and Precautions (5.2)] . Advise patients to seek medical care if they develop signs or symptoms of infection, such as persistent redness, warmth, swelling, or tenderness, at the epinephrine injection site. 5.4 Allergic Reactions Associated with Sulfite 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 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. 5.5 Disease Interactions Some patients may be at greater risk for developing adverse reactions after epinephrine administration. Despite these concerns, it should be recognized that the presence of these conditions is not a contraindication to epinephrine administration in an acute, life-threatening situation. Therefore, patients with these conditions, and/or any other person who might be in a position to administer epinephrine injection to a patient experiencing anaphylaxis should be carefully instructed in regard to the circumstances under which epinephrine should be used. Patients with Heart Disease Epinephrine should be administered with caution to patients who have heart disease, including patients with cardiac arrhythmias, coronary artery or organic heart disease, or hypertension. In such patients, or in patients who are on drugs that may sensitize the heart to arrhythmias, epinephrine may precipitate or aggravate angina pectoris as well as produce ventricular arrhythmias [see Drug Interactions (7) and Adverse Reactions (6)] . Other Patients and Diseases Epinephrine should be administered with caution to patients with hyperthyroidism, diabetes, elderly individuals, and pregnant women. Patients with Parkinson’s disease may notice a temporary worsening of symptoms.
Who should not take Twinject
None. None. ( 4 )
Overdose — what happens if you take too much
Overdosage of epinephrine may produce extremely elevated arterial pressure, which may result in cerebrovascular hemorrhage, particularly in elderly patients. Overdosage may also result in pulmonary edema because of peripheral vascular constriction together with cardiac stimulation. Treatment consists of a rapidly acting vasodilators or alpha-adrenergic blocking drugs 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.
U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.
Interactions
Cardiac Glycosides, Diuretics, and Anti-arrhythmics Patients who receive epinephrine while concomitantly taking cardiac glycosides, diuretics, or anti-arrhythmics should be observed carefully for the development of cardiac arrhythmias [see Warnings and Precautions (5.5)] . Antidepressants, Monoamine Oxidase Inhibitors, Levothyroxine, and Antihistamines The effects of epinephrine may be potentiated by tricyclic antidepressants, monoamine oxidase inhibitors, levothyroxine sodium, and certain antihistamines, notably chlorpheniramine, tripelennamine, and diphenhydramine. Beta-Adrenergic Blockers The cardiostimulating and bronchodilating effects of epinephrine are antagonized by beta- adrenergic blocking drugs, such as propranolol. Alpha-Adrenergic Blockers The vasoconstricting and hypertensive effects of epinephrine are antagonized by alpha-adrenergic blocking drugs, such as phentolamine. Ergot Alkaloids Ergot alkaloids may also reverse the pressor effects of epinephrine. Cardiac glycosides or diuretics: observe for development of cardiac arrhythmias. ( 7 ) Tricyclic antidepressants, monoamine oxidase inhibitors, levothyroxine sodium, and certain antihistamines: potentiate effects of epinephrine. ( 7 ) Beta-adrenergic blocking drugs: antagonize cardiostimulating and bronchodilating effects of epinephrine. ( 7 ) Alpha-adrenergic blocking drugs: antagonize vasoconstricting and hypertensive effects of epinephrine. ( 7 ) Ergot alkaloids: may reverse the pressor effects of epinephrine. ( 7 )
Drug class
How this class works, per Physiology, Catecholamines - StatPearls - NCBI Bookshelf.
May treat (source: NIH RxClass)
See how Twinject ranks — best-rated catecholamine for:
Dosage forms
Injectable
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
Compare alternatives
A same-class option may cost less. See alternatives →
Frequently asked questions
- What does Twinject treat?
- Twinject (Epinephrine) may be used to treat airway obstruction, anaphylaxis, bradycardia, bronchial spasm, open-angle glaucoma, heart arrest, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- How does Twinject work?
- Twinject is a catecholamine. Catecholamines such as epinephrine and norepinephrine are "fight or flight" messengers that switch on adrenergic (alpha and beta) receptors throughout the body, speeding the heart, raising blood pressure by tightening blood vessels, and opening the airways.
- How is Twinject rated?
- pharmaranks gives Twinject a composite score of 3.5 out of 5, currently based on 1 weighted source (FDA regulatory recall-safety data weighted highest). See our methodology at /how-we-rate.
- How much does Twinject cost?
- Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $3898.29 for 30, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins.
- Is there a coupon or discount for Twinject?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Twinject. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Twinject?
- Twinject is marketed by Impax. You can see Impax's full profile, rating, and other products on pharmaranks.
- Is Twinject a brand-name or generic drug?
- Twinject is a brand-name product with the active ingredient Epinephrine.
- Is Twinject available over the counter?
- No. Twinject is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Twinject come in?
- Twinject is currently marketed as injectable, per the FDA's National Drug Code Directory.
- What class of drug is Twinject?
- Twinject is classified as catecholamine, alpha-adrenergic agonist, beta-adrenergic agonist, per the FDA's Established Pharmacologic Class.
- Is Twinject FDA-registered?
- Twinject is on record with the U.S. FDA under application number NDA020800. You can verify this on its official FDA label.
- Has Twinject been recalled by the FDA?
- Twinject has no FDA recalls recorded under its own application in the openFDA enforcement database. Its recall-safety score reflects its manufacturer's overall recall record. This is general reference, not medical advice — check the FDA recall database for the latest alerts.
- Is Twinject safe?
- There's no single safe-or-not verdict. pharmaranks gives Twinject a recall-safety score of 70/100, based on its FDA recall history (no recalls under its own FDA application) — not an efficacy or side-effect rating. Review its FDA-label side effects and warnings before use, and always consult a licensed professional.
- What are the side effects of Twinject?
- Twinject's side effects are taken directly from its FDA label. From the label: Due to the lack of randomized, controlled clinical trials of epinephrine for the treatment of anaphylaxis, the true incidence of adverse reactions associated with the systemic use of epinephrine is difficult to determine. Adverse reactions reported in observational trials, case reports,… Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.
Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
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twinject
70/100