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DuoDote Side Effects Center
Medical Editor: Melissa Conrad Stöppler, MD
DuoDote (atropine and pralidoxime chloride injection) is indicated for the treatment of poisoning by organophosphorus chemical nerve agents as well as organophosphorus insecticide poisoning. Patients should not rely on DuoDote to provide complete protection from chemical nerve agents and insecticide poisoning. DuoDote is not available in generic form. Common side effects from the use of DuoDote are dryness of the mouth, blurred vision, dry eyes, photophobia, confusion, headache, dizziness, tachycardia, palpitations, flushing, urinary hesitancy or retention, constipation, abdominal pain, abdominal distention, nausea and vomiting, loss of libido, and impotence.
DuoDote is available as an auto-injector. DuoDote is known to interact with barbiturates, morphine, theophylline, aminophylline, succinylcholine, reserpine, and phenothiazine-type tranquilizers, as well as succinylcholine and mivacurium .
DuoDote has not been studied in pregnant women and should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. Because many drugs are excreted in human milk, caution should be exercised when DuoDote is administered to a nursing woman.
DuoDote (atropine and pralidoxime chloride injection) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
DuoDote in Detail - Patient Information: Side Effects
Some of the side effects of atropine and pralidoxime may be similar to the symptoms of poisoning. Your caregivers will watch you closely to determine whether your body is responding well to the medication, or if you are having any serious side effects.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Tell your caregivers at once if you have a serious side effect such as:
- pounding heartbeats or fluttering in your chest;
- painful or difficult urination;
- trouble swallowing;
- feeling like you might pass out;
- loss of movement in any part of your body;
- slow heart rate, weak pulse, fainting, slow breathing (breathing may stop); or
- chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling.
Less serious side effects may include:
- dry mouth, dry nose, dry skin;
- dry eyes, blurred vision;
- increased sensitivity of your eyes to light;
- dizziness, drowsiness;
- muscle weakness;
- constipation, stomach pain, bloating, nausea, vomiting;
- loss of interest in sex, impotence; or
- mild skin rash.
Read the entire detailed patient monograph for DuoDote (Atropine and Pralidoxime Chloride Injection)
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
DuoDote FDA Prescribing Information: Side Effects
Muscle tightness and sometimes pain may occur at the injection site.
The most common side effects of atropine can be attributed to its antimuscarinic action. These include dryness of the mouth, blurred vision, dry eyes, photophobia, confusion, headache, dizziness, tachycardia, palpitations, flushing, urinary hesitancy or retention, constipation, abdominal pain, abdominal distention, nausea and vomiting, loss of libido, and impotence. Anhidrosis may produce heat intolerance and impairment of temperature regulation in a hot environment. Dysphagia,
Larger or toxic doses may produce such central effects as restlessness, tremor, fatigue, locomotor difficulties, delirium followed by hallucinations, depression, and, ultimately medullary paralysis and death. Large doses can also lead to circulatory collapse. In such cases, blood pressure declines and death due to respiratory failure may ensue following paralysis and coma.
Cardiovascular adverse events reported in the literature for atropine include, but are not limited to, sinus tachycardia, palpitations, premature ventricular contractions, atrial flutter, atrial fibrillation, ventricular flutter, ventricular fibrillation, cardiac syncope, asystole, and myocardial infarction. (See PRECAUTIONS)
Hypersensitivity reactions will occasionally occur, are usually seen as skin rashes, and may progress to exfoliation. Anaphylactic reaction and laryngospasm are rare.
Pralidoxime can cause blurred vision, diplopia and impaired accommodation, dizziness, headache, drowsiness, nausea, tachycardia, increased systolic and diastolic blood pressure, muscular weakness, dry mouth, emesis, rash, dry skin, hyperventilation, decreased renal function, and decreased sweating when given parenterally to normal volunteers who have not been exposed to anticholinesterase poisons.
In several cases of organophosphorous poisoning, excitement and manic behavior have occurred immediately following recovery of consciousness, in either the presence or absence of pralidoxime administration. However, similar behavior has not been reported in subjects given pralidoxime in the absence of organophosphorous poisoning.
Elevations in SGOT and/or SGPT enzyme levels were observed in 1 of 6 normal volunteers given 1200 mg of pralidoxime intramuscularly, and in 4 of 6 volunteers given 1800 mg intra muscularly. Levels returned to normal in about two weeks. Transient elevations in creatine kinase were observed in all normal volunteers given the drug.
Atropine and Pralidoxime Chloride
When atropine and pralidoxime are used together, the signs of atropinization may occur earlier than might be expected when atropine is used alone.
The DuoDote Auto-Injector should be administered by emergency medical services personnel to treat organophosphorous poisoning. However, an injection might be given by mistake to someone who is not poisoned.
Studies have been conducted to evaluate the effect of atropine and pralidoxime on individuals in the absence of poisoning.
Atropine 2 mg IM, roughly the equivalent of one DuoDote Auto-Injector, when given to healthy male volunteers, is associated with minimal effects on visual, motor, and mental functions, though unsteadiness walking and difficulty concentrating may occur. Atropine reduces body sweating and increases body temperature, particularly with exercise and under hot conditions.
Atropine 4 mg IM, roughly the equivalent of two DuoDote Auto-Injectors, when given to healthy male volunteers, is associated with impaired visual acuity, visual near point accommodation, logical reasoning, digital recall, learning, and cognitive reaction time. Ability to read is reduced or lost. Subjects are unsteady and need to concentrate on walking. These effects begin about 15 minutes to one hour or more post-dose.
Atropine 6 mg IM, roughly the equivalent of three DuoDote Auto-Injectors, when given to healthy male volunteers, is associated with the effects described above plus additional central effects including poor coordination, poor attention span, and visual hallucinations (colored flashes) in many subjects. Frank visual hallucinations, auditory hallucinations, disorientation, and ataxia occur in some subjects. Skilled and labor-intense tasks are performed more slowly and less efficiently. Decision making takes longer and is sometimes impaired.
It is unclear if the results of the above studies can be extrapolated to other populations. In the elderly and patients with co-morbid conditions, the effects of ≥ 2 mg atropine on the ability to see, walk and think properly are unstudied; effects may be greater in susceptible populations.
Symptoms of pralidoxime overdose may include: dizziness, blurred vision, diplopia, headache, impaired accommodation, nausea, and slight tachycardia. Transient hypertension due to pralidoxime may last several hours.
Patients who are mistakenly injected with DuoDote should avoid potentially dangerous overheating, avoid vigorous physical activity, and seek medical attention as soon as feasible.
Read the entire FDA prescribing information for DuoDote (Atropine and Pralidoxime Chloride Injection)
Additional DuoDote Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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