Neostigmine Methylsulfate

Generic Name: neostigmine methylsulfate

Over-the-Counter (OTC)

Brand Names:

Neostigmine Methylsulfate

11 DESCRIPTION Neostigmine methylsulfate, a cholinesterase inhibitor, is (m-hydroxyphenyl) trimethylammonium methylsulfate dimethylcarbamate. The structural formula is: Neostigmine methylsulfate is a white powder and is very soluble in water and soluble in alcohol. Neostigmine Methylsulfate Injection, USP is a sterile, nonpyrogenic solution intended for intravenous use.

Overview

11 DESCRIPTION Neostigmine methylsulfate, a cholinesterase inhibitor, is (m-hydroxyphenyl) trimethylammonium methylsulfate dimethylcarbamate. The structural formula is: Neostigmine methylsulfate is a white powder and is very soluble in water and soluble in alcohol. Neostigmine Methylsulfate Injection, USP is a sterile, nonpyrogenic solution intended for intravenous use.

Uses

1 INDICATIONS & USAGE Neostigmine Methylsulfate Injection is a cholinesterase inhibitor indicated for the reversal of the effects of non­ depolarizing neuromuscular blocking agents after surgery. Neostigmine Methylsulfate Injection, a cholinesterase inhibitor, is indicated for the reversal of the effects of non-depolarizing neuromuscular blocking agents (NMBAs) after surgery (1).

Dosage

2 DOSAGE & ADMINISTRATION • Should be administered by trained healthcare providers (2.1) • Peripheral nerve stimulator and monitoring for twitch responses should be used to determine when Neostigmine Methylsulfate Injection should be initiated and if additional doses are needed (2.2) - For reversal of NMBAs with shorter half-lives, when first twitch response is substantially greater than 10% of baseline, or when a second twitch is present: 0.03 mg/kg by intravenous route (2.2) - For reversal of NMBAs with longer half-lives or when first twitch response is close to 10% of baseline: 0.07 mg/kg by intravenous route (2.2) • Maximum total dosage is 0.07 mg/kg or up to a total of 5 mg (whichever is less) (2.2) • An anticholinergic agent, e.g., atropine sulfate or glycopyrrolate, should be admini...

Side Effects

6 ADVERSE REACTIONS Most common adverse reactions during treatment: bradycardia, nausea and vomiting. (6) To report SUSPECTED ADVERSE REACTIONS, contact XIROMED LLC at 1-844-XIROMED (844-947-6633) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1. Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Adverse reactions to neostigmine methylsulfate are most often attributable to exaggerated pharmacological effects, in particular, at muscarinic receptor sites.

Interactions

7 DRUG INTERACTIONS The pharmacokinetic interaction between neostigmine methylsulfate and other drugs has not been studied. Neostigmine methylsulfate is metabolized by microsomal enzymes in the liver. Use with caution when using Neostigmine Methylsulfate Injection with other drugs which may alter the activity of metabolizing enzymes or transporters.

Warnings

5 WARNINGS AND PRECAUTIONS • Bradycardia: Atropine or glycopyrrolate should be administered prior to Neostigmine Methylsulfate Injection to lessen risk of bradycardia. (5.1) • Serious Reactions with Coexisting Conditions: Use with caution in patients with, coronary artery disease, cardiac arrhythmias, recent acute coronary syndrome or myasthenia gravis. (5.2) • Neuromuscular Dysfunction: Can occur if large doses of Neostigmine Methylsulfate Injection are administered when neuromuscular blockade is minimal; reduce dose if recovery from neuromuscular blockade is nearly complete. (5.4) 5.1. Bradycardia Neostigmine has been associated with bradycardia. 4 CONTRAINDICATIONS Neostigmine Methylsulfate Injection is contraindicated in patients with: • known hypersensitivity to neostigmine methylsulfate (known hypersensitivity reactions have included urticaria, angioedema, erythema multiforme, generalized rash, facial swelling, peripheral edema, pyrexia, flushing, hypotension, bronchospasm, bradycardia and anaphylaxis).

Pregnancy

8.1 Pregnancy Risk Summary There are no adequate or well-controlled studies of Neostigmine Methylsulfate Injection in pregnant women. It is not known whether Neostigmine Methylsulfate Injection can cause fetal harm when administered to a pregnant woman or can affect reproductive capacity. The incidence of malformations in human pregnancies has not been established for neostigmine as the data are limited. All pregnancies, regardless of drug exposure, have a background risk of 2 to 4% for major birth defects, and 15 to 20% for pregnancy loss.

Storage

16 HOW SUPPLIED SECTION Neostigmine Methylsulfate Injection, USP is a clear, colorless solution and is available in multi -dose USP Type-I clear glass tubular vials in the following package sizes: 84549-172-23 - 1 mg/mL 10 mL multiple-dose vial The vial stopper is not made with natural rubber latex.

Frequently Asked Questions

What is Neostigmine Methylsulfate used for?

1 INDICATIONS & USAGE Neostigmine Methylsulfate Injection is a cholinesterase inhibitor indicated for the reversal of the effects of non­ depolarizing neuromuscular blocking agents after surgery. Neostigmine Methylsulfate Injection, a cholinesterase inhibitor, is indicated for the reversal of the effects of non-depolarizing neuromuscular blocking agents (NMBAs) after surgery (1).

What are the side effects of Neostigmine Methylsulfate?

6 ADVERSE REACTIONS Most common adverse reactions during treatment: bradycardia, nausea and vomiting. (6) To report SUSPECTED ADVERSE REACTIONS, contact XIROMED LLC at 1-844-XIROMED (844-947-6633) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1. Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Adverse reactions to neostigmine methylsulfate are most often attributable to exaggerated pharmacological effects, in particular, at muscarinic receptor sites.

Can I take Neostigmine Methylsulfate during pregnancy?

8.1 Pregnancy Risk Summary There are no adequate or well-controlled studies of Neostigmine Methylsulfate Injection in pregnant women. It is not known whether Neostigmine Methylsulfate Injection can cause fetal harm when administered to a pregnant woman or can affect reproductive capacity. The incidence of malformations in human pregnancies has not been established for neostigmine as the data are limited. All pregnancies, regardless of drug exposure, have a background risk of 2 to 4% for major birth defects, and 15 to 20% for pregnancy loss.

What are the important warnings for Neostigmine Methylsulfate?

5 WARNINGS AND PRECAUTIONS • Bradycardia: Atropine or glycopyrrolate should be administered prior to Neostigmine Methylsulfate Injection to lessen risk of bradycardia. (5.1) • Serious Reactions with Coexisting Conditions: Use with caution in patients with, coronary artery disease, cardiac arrhythmias, recent acute coronary syndrome or myasthenia gravis. (5.2) • Neuromuscular Dysfunction: Can occur if large doses of Neostigmine Methylsulfate Injection are administered when neuromuscular blockade is minimal; reduce dose if recovery from neuromuscular blockade is nearly complete. (5.4) 5.1. Bradycardia Neostigmine has been associated with bradycardia. 4 CONTRAINDICATIONS Neostigmine Methylsulfate Injection is contraindicated in patients with: • known hypersensitivity to neostigmine methylsulfate (known hypersensitivity reactions have included urticaria, angioedema, erythema multiforme, generalized rash, facial swelling, peripheral edema, pyrexia, flushing, hypotension, bronchospasm, bradycardia and anaphylaxis).

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Medical Disclaimer

This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.