Version May 2024
Note: Enlon-Plus is no longer available in the United States.
Reversal of neuromuscular blockade: IV: 0.05 to 0.1 mL/kg given over 45 to 60 seconds. The dose delivered is 0.5 to 1 mg/kg of edrophonium and 0.007 to 0.014 mg/kg of atropine. An edrophonium dose of 1 mg/kg should rarely be exceeded. Note: Monitor closely for bradyarrhythmias.
There are no dosage adjustments provided in the manufacturer’s labeling.
There are no dosage adjustments provided in the manufacturer’s labeling.
Refer to adult dosing.
See individual agents.
Hypersensitivity to edrophonium, atropine, or any component of the formulation; intestinal or urinary obstruction of the mechanical type. Atropine is contraindicated in acute glaucoma, adhesions (synechiae) between the iris and lens of the eye, and pyloric stenosis.
Concerns related to adverse effects:
• Anticholinesterase insensitivity: If patient becomes insensitive to the drug, reduce dose or discontinue edrophonium until patient sensitive again.
• Respiratory arrest: Rare reports of respiratory arrest have occurred with edrophonium.
• Tissue irritation: May cause tissue irritation if extravasated.
Disease-related concerns:
• Arrhythmias: Use with caution in patients with cardiac arrhythmias (eg, bradyarrhythmias).
• Asthma: Use with caution in patients with bronchial asthma.
• Chronic lung disease: Use with caution in patients with chronic lung disease.
• Prostatic hyperplasia: Use with caution in patients with prostatic hyperplasia.
• Myasthenia gravis: Avoid use in myasthenia gravis; may exacerbate muscular weakness.
Concurrent drug therapy issues:
• Anticholinergics: Consider additive adverse effects with concurrent use of atropine and other anticholinergics (eg, tricyclic antidepressants, antipsychotics, some antihistamines, anti-Parkinson drugs).
• Atropine: Patients who are bradycardic or at risk of being bradycardic (eg, those on a beta-blocker or cardiovascular patients who received anesthesia with an opioid and nitrous oxide only) should first receive atropine prior to edrophonium-atropine combination. Most arrhythmias occur within 2 minutes of administration and reverse shortly thereafter. Atropine should be available for immediate use in case of severe cholinergic reaction. Bradyarrhythmias respond to small doses of atropine.
• Nondepolarizing muscle relaxants: Should not be administered before any nondepolarizing muscle relaxant.
Dosage form specific issues:
• Sodium sulfite: Products may contain sodium sulfite.
Enlon-Plus is no longer available in the US.
Yes
Solution (Enlon-Plus Intravenous)
10-0.14 mg/mL (15 mL): $30.00
Disclaimer: The pricing data provide a representative AWP and/or AAWP price from a single manufacturer of the brand and/or generic product, respectively. The pricing data should be used for benchmarking purposes only, and as such should not be used to set or adjudicate any prices for reimbursement or purchasing functions. Pricing data is updated monthly.
IV: Administer IV slowly over 45 seconds to 1 minute at a point of at least 5% recovery of twitch response to neuromuscular stimulation (95% block).
Respiratory depression caused by curare overdosage: Adjunctive treatment of respiratory depression caused by curare overdosage.
Reversal of nondepolarizing neuromuscular blocking agents: Reversal of nondepolarizing neuromuscular-blocking agents.
None known.
Note: Interacting drugs may not be individually listed below if they are part of a group interaction (eg, individual drugs within “CYP3A4 Inducers [Strong]” are NOT listed). For a complete list of drug interactions by individual drug name and detailed management recommendations, use the Lexicomp drug interactions program by clicking on the “Launch drug interactions program” link above.
Acetylcholinesterase Inhibitors: May diminish the therapeutic effect of Anticholinergic Agents. Anticholinergic Agents may diminish the therapeutic effect of Acetylcholinesterase Inhibitors. Risk C: Monitor therapy
Aclidinium: May enhance the anticholinergic effect of Anticholinergic Agents. Risk X: Avoid combination
Alpha1-Agonists: Atropine (Systemic) may enhance the hypertensive effect of Alpha1-Agonists. Risk C: Monitor therapy
Amantadine: May enhance the anticholinergic effect of Anticholinergic Agents. Risk C: Monitor therapy
Amezinium: Atropine (Systemic) may enhance the stimulatory effect of Amezinium. Risk C: Monitor therapy
Amifampridine: Acetylcholinesterase Inhibitors may enhance the therapeutic effect of Amifampridine. Amifampridine side effects may also be increased. Amifampridine may enhance the therapeutic effect of Acetylcholinesterase Inhibitors. Acetylcholinesterase inhibitor side effects may also be increased. Risk C: Monitor therapy
Anticholinergic Agents: May enhance the adverse/toxic effect of other Anticholinergic Agents. Risk C: Monitor therapy
Anticholinergic Agents: Acetylcholinesterase Inhibitors may diminish the therapeutic effect of Anticholinergic Agents. Anticholinergic Agents may diminish the therapeutic effect of Acetylcholinesterase Inhibitors. Risk C: Monitor therapy
Benoxinate: Acetylcholinesterase Inhibitors may enhance the therapeutic effect of Benoxinate. Specifically, the effects of benoxinate may be prolonged. Risk C: Monitor therapy
Beta-Blockers: Acetylcholinesterase Inhibitors may enhance the bradycardic effect of Beta-Blockers. Risk C: Monitor therapy
Botulinum Toxin-Containing Products: May enhance the anticholinergic effect of Anticholinergic Agents. Risk C: Monitor therapy
Bradycardia-Causing Agents: May enhance the bradycardic effect of other Bradycardia-Causing Agents. Risk C: Monitor therapy
Cannabinoid-Containing Products: Anticholinergic Agents may enhance the tachycardic effect of Cannabinoid-Containing Products. Risk C: Monitor therapy
Cardiac Glycosides: Edrophonium may enhance the AV-blocking effect of Cardiac Glycosides. Risk C: Monitor therapy
Ceritinib: Bradycardia-Causing Agents may enhance the bradycardic effect of Ceritinib. Management: If this combination cannot be avoided, monitor patients for evidence of symptomatic bradycardia, and closely monitor blood pressure and heart rate during therapy. Risk D: Consider therapy modification
Chloral Betaine: May enhance the adverse/toxic effect of Anticholinergic Agents. Risk C: Monitor therapy
Chlorprothixene: Anticholinergic Agents may enhance the anticholinergic effect of Chlorprothixene. Risk C: Monitor therapy
Chlorprothixene: Acetylcholinesterase Inhibitors may enhance the adverse/toxic effect of Chlorprothixene. Acetylcholinesterase Inhibitors may enhance the therapeutic effect of Chlorprothixene. Risk C: Monitor therapy
Cholinergic Agonists: Acetylcholinesterase Inhibitors may enhance the adverse/toxic effect of Cholinergic Agonists. Specifically, cholinergic effects may be enhanced or increased. Risk C: Monitor therapy
Cimetropium: Anticholinergic Agents may enhance the anticholinergic effect of Cimetropium. Risk X: Avoid combination
CloZAPine: Anticholinergic Agents may enhance the constipating effect of CloZAPine. Management: Consider alternatives to this combination whenever possible. If combined, monitor closely for signs and symptoms of gastrointestinal hypomotility and consider prophylactic laxative treatment. Risk D: Consider therapy modification
Corticosteroids (Systemic): May enhance the adverse/toxic effect of Acetylcholinesterase Inhibitors. Increased muscular weakness may occur. Risk C: Monitor therapy
Dipyridamole: May diminish the therapeutic effect of Acetylcholinesterase Inhibitors. Risk C: Monitor therapy
Eluxadoline: Anticholinergic Agents may enhance the constipating effect of Eluxadoline. Risk X: Avoid combination
EPHEDrine (Systemic): Atropine (Systemic) may enhance the therapeutic effect of EPHEDrine (Systemic). Risk C: Monitor therapy
Etrasimod: May enhance the bradycardic effect of Bradycardia-Causing Agents. Risk C: Monitor therapy
Fexinidazole: Bradycardia-Causing Agents may enhance the arrhythmogenic effect of Fexinidazole. Risk X: Avoid combination
Fingolimod: Bradycardia-Causing Agents may enhance the bradycardic effect of Fingolimod. Management: Consult with the prescriber of any bradycardia-causing agent to see if the agent could be switched to an agent that does not cause bradycardia prior to initiating fingolimod. If combined, perform continuous ECG monitoring after the first fingolimod dose. Risk D: Consider therapy modification
Gastrointestinal Agents (Prokinetic): Anticholinergic Agents may diminish the therapeutic effect of Gastrointestinal Agents (Prokinetic). Risk C: Monitor therapy
Glucagon: Anticholinergic Agents may enhance the adverse/toxic effect of Glucagon. Specifically, the risk of gastrointestinal adverse effects may be increased. Risk C: Monitor therapy
Glycopyrrolate (Oral Inhalation): Anticholinergic Agents may enhance the anticholinergic effect of Glycopyrrolate (Oral Inhalation). Risk X: Avoid combination
Glycopyrronium (Topical): May enhance the anticholinergic effect of Anticholinergic Agents. Risk X: Avoid combination
Ipratropium (Oral Inhalation): May enhance the anticholinergic effect of Anticholinergic Agents. Risk X: Avoid combination
Itopride: Anticholinergic Agents may diminish the therapeutic effect of Itopride. Risk C: Monitor therapy
Ivabradine: Bradycardia-Causing Agents may enhance the bradycardic effect of Ivabradine. Risk C: Monitor therapy
Lacosamide: Bradycardia-Causing Agents may enhance the AV-blocking effect of Lacosamide. Risk C: Monitor therapy
Levosulpiride: Anticholinergic Agents may diminish the therapeutic effect of Levosulpiride. Risk X: Avoid combination
Macimorelin: Atropine (Systemic) may diminish the diagnostic effect of Macimorelin. Risk X: Avoid combination
Mianserin: May enhance the anticholinergic effect of Anticholinergic Agents. Risk C: Monitor therapy
Midodrine: May enhance the bradycardic effect of Bradycardia-Causing Agents. Risk C: Monitor therapy
Mirabegron: Anticholinergic Agents may enhance the adverse/toxic effect of Mirabegron. Risk C: Monitor therapy
Neuromuscular-Blocking Agents (Nondepolarizing): Acetylcholinesterase Inhibitors may diminish the neuromuscular-blocking effect of Neuromuscular-Blocking Agents (Nondepolarizing). Risk C: Monitor therapy
Nitroglycerin: Anticholinergic Agents may decrease the absorption of Nitroglycerin. Specifically, anticholinergic agents may decrease the dissolution of sublingual nitroglycerin tablets, possibly impairing or slowing nitroglycerin absorption. Risk C: Monitor therapy
Opioid Agonists: Anticholinergic Agents may enhance the adverse/toxic effect of Opioid Agonists. Specifically, the risk for constipation and urinary retention may be increased with this combination. Risk C: Monitor therapy
Oxatomide: May enhance the anticholinergic effect of Anticholinergic Agents. Risk X: Avoid combination
Ozanimod: May enhance the bradycardic effect of Bradycardia-Causing Agents. Risk C: Monitor therapy
Ponesimod: Bradycardia-Causing Agents may enhance the bradycardic effect of Ponesimod. Management: Avoid coadministration of ponesimod with drugs that may cause bradycardia when possible. If combined, monitor heart rate closely and consider obtaining a cardiology consult. Do not initiate ponesimod in patients on beta-blockers if HR is less than 55 bpm. Risk D: Consider therapy modification
Potassium Chloride: Anticholinergic Agents may enhance the ulcerogenic effect of Potassium Chloride. Management: Patients on drugs with substantial anticholinergic effects should avoid using any solid oral dosage form of potassium chloride. Risk X: Avoid combination
Potassium Citrate: Anticholinergic Agents may enhance the ulcerogenic effect of Potassium Citrate. Management: Patients on drugs with substantial anticholinergic effects should avoid using any solid oral dosage form of potassium citrate. Risk X: Avoid combination
Pramlintide: May enhance the anticholinergic effect of Anticholinergic Agents. These effects are specific to the GI tract. Risk X: Avoid combination
Ramosetron: Anticholinergic Agents may enhance the constipating effect of Ramosetron. Risk C: Monitor therapy
Revefenacin: Anticholinergic Agents may enhance the anticholinergic effect of Revefenacin. Risk X: Avoid combination
Ritodrine: Atropine (Systemic) may enhance the adverse/toxic effect of Ritodrine. Risk C: Monitor therapy
Rivastigmine: Anticholinergic Agents may diminish the therapeutic effect of Rivastigmine. Rivastigmine may diminish the therapeutic effect of Anticholinergic Agents. Management: Use of rivastigmine with an anticholinergic agent is not recommended unless clinically necessary. If the combination is necessary, monitor for reduced anticholinergic effects. Risk D: Consider therapy modification
Secretin: Anticholinergic Agents may diminish the therapeutic effect of Secretin. Management: Avoid concomitant use of anticholinergic agents and secretin. Discontinue anticholinergic agents at least 5 half-lives prior to administration of secretin. Risk D: Consider therapy modification
Sincalide: Drugs that Affect Gallbladder Function may diminish the therapeutic effect of Sincalide. Management: Consider discontinuing drugs that may affect gallbladder motility prior to the use of sincalide to stimulate gallbladder contraction. Risk D: Consider therapy modification
Siponimod: Bradycardia-Causing Agents may enhance the bradycardic effect of Siponimod. Management: Avoid coadministration of siponimod with drugs that may cause bradycardia. If combined, consider obtaining a cardiology consult regarding patient monitoring. Risk D: Consider therapy modification
Succinylcholine: Acetylcholinesterase Inhibitors may enhance the neuromuscular-blocking effect of Succinylcholine. Risk C: Monitor therapy
Thiazide and Thiazide-Like Diuretics: Anticholinergic Agents may increase the serum concentration of Thiazide and Thiazide-Like Diuretics. Risk C: Monitor therapy
Tiotropium: Anticholinergic Agents may enhance the anticholinergic effect of Tiotropium. Risk X: Avoid combination
Tofacitinib: May enhance the bradycardic effect of Bradycardia-Causing Agents. Risk C: Monitor therapy
Topiramate: Anticholinergic Agents may enhance the adverse/toxic effect of Topiramate. Risk C: Monitor therapy
Umeclidinium: May enhance the anticholinergic effect of Anticholinergic Agents. Risk X: Avoid combination
Animal reproduction studies have not been conducted with this combination. Refer to individual agents.
According to the manufacturer, safety of this combination during lactation has not been established. Refer to individual agents.
Vital signs, ECG, and ventilatory support; neuromuscular function
Edrophonium: Inhibits destruction of acetylcholine by acetylcholinesterase. This facilitates transmission of impulses across myoneural junction and results in increased cholinergic response.
Atropine: Minimizes or prevents the muscarinic cholinergic effects caused by edrophonium (eg, bradycardia, bronchoconstriction, increased secretions).
See individual agents.
Onset of action: Edrophonium: Antagonism of nondepolarizing muscle relaxants: 3 minutes; Atropine: Heart rate: Immediate
Duration: Edrophonium: Antagonism of nondepolarizing muscle relaxants: 70 minutes; Atropine: Heart rate: 170 minutes
Protein binding: Atropine: ~14%
Half-life elimination: Edrophonium: Adults: 1.2 to 2.4 hours; Anephric patients: 2.4 to 4.4 hours
Time to peak, plasma: Edrophonium: Antagonism of nondepolarizing muscle relaxants: 1.2 minutes; Atropine: Heart rate: 2 to 16 minutes
Excretion: Edrophonium: Primarily urine (67%)
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