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Acetylcysteine 200 mg/mL Injection, Solution — NDC 83270-001-04 (Billing 83270-0001-04)

by ONESOURCE SPECIALTY PHARMA LIMITED · 4 VIAL, SINGLE-DOSE in 1 CARTON / 30 mL in 1 VIAL, SINGLE-DOSE

This is a package of Acetylcysteine 200 mg/mL Injection, Solution from ONESOURCE SPECIALTY PHARMA LIMITED, marketed since Apr 2023 and currently FDA-listed. It is this product's only package size.

NDC 83270-0001-04
🏷️ FDA NDC (as labeled) 83270-001-04 billing pads the product segment with a zero
Rx only Generic On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

⚠️
Other active recalls for Acetylcysteine (different manufacturers) — 2 · tap to view
These affect other manufacturers’ products for the same ingredient — not necessarily the exact NDC on this page.
Class II · Jul 24, 2026 — Presence of Particulate Matter: Product contaminated with particulate matter identified as hair, glass and/or paraformaldehyde (American Regent, Inc.) · FDA recall D-0797-2026
Class II · Jul 24, 2026 — Presence of Particulate Matter: Product contaminated with particulate matter identified as hair, glass and/or paraformaldehyde (American Regent, Inc.) · FDA recall D-0796-2026
Each entry is an official FDA enforcement report — look up any recall number in the FDA recall database ↗

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 83270-001-04
Product NDC 83270-001
11-digit billing NDC 83270000104
RxCUI 465377
UNII WYQ7N0BPYC
Application # ANDA217182
SPL Set ID 3b0310d2-4e70-4b94-8d69-cb5999a32b54
Established class (EPC) Antidote; Antidote for Acetaminophen Overdose; Mucolytic
Mechanism of action Reduction Activity
Physiologic effect Decreased Respiratory Secretion Viscosity; Increased Glutathione Concentration
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2023-04-26
Route INTRAVENOUS
Dosage form INJECTION, SOLUTION
Substance ACETYLCYSTEINE
TE code (Orange Book) AP · RLD · RS
Quick answers
  • RxCUI (RxNorm): 465377
Why two NDCs? The FDA registers this code as 83270-001-04 — a 5-3-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the product segment → 83270-0001-04. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

RxNorm drug class

This medicine belongs to the Antidote class.

Pharmacologic class Antidote, Mucolytic, Antidote for Acetaminophen Overdose
Drug family (ATC) Mucolytics, Other ophthalmologicals, Antidotes
How it works Reduction Activity
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

Clinical

📗 Our plain-language guide HelloPharmacist
  • It has two main uses. It is an antidote that helps protect the liver after an acetaminophen overdose. In inhaled form, it also helps loosen thick, sticky mucus in many lung conditi...
  • The injection is given into a vein by healthcare staff, usually starting with a loading dose. The inhaled solution is breathed in as a mist, often a few times a day. Your prescribe...
  • The most common ones are rash, hives, facial flushing and itching. Some people have nausea, vomiting or a fast heartbeat. Mild flushing often fades even while the infusion continue...
  • Get help for wheezing, shortness of breath, throat tightness, swelling or feeling faint. These can be signs of a serious allergic reaction. If you have asthma, tell your care team...
📖 Read our full Acetylcysteine guide →
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price systemPer mLPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · quarterly No Part D plan price is available for this NDC in our data.
ℹ️
No price is published for this exact package yet. CMS surveys NADAC per package size, so a different pack of the same drug often has one.
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

Packaging — all sizes for this product

Package NDCDescription Marketing startMarketing endStatus
83270-0001-04 You're viewing this Main listing 4 VIAL, SINGLE-DOSE in 1 CARTON / 30 mL in 1 VIAL, SINGLE-DOSE 2023-04-26 — Active

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Acetylcysteine 200 mg/mL 00143-9433-04 Hikma 4 vials — AP FDA listed —
acetylcysteine 200 mg/mL 00574-0805-30 Padagis 4 vials — AP FDA listed —
Acetylcysteine 200 mg/mL 14445-0412-04 Indoco 4 vials — AP FDA listed —
Acetylcysteine 200 mg/mL 25021-0812-30 Sagent 4 vials — AP FDA listed —
Acetylcysteine 6 g/30mL 55150-0259-30 Eugia 4 vials — AP FDA listed —
Acetylcysteine 200 mg/mL 63323-0963-44 Fresenius 4 vials — AP FDA listed —
Acetadote 200 mg/mL 66220-0207-30 Cumberland 4 vials — AP FDA listed —
Acetylcysteine 200 mg/mL 68462-0946-12 Glenmark 4 vials — AP FDA listed —
Acetylcysteine 200 mg/mL 70069-0788-04 Somerset 4 vials — AP FDA listed —
Acetylcysteine 200 mg/mL 70594-0111-02 Xellia 4 vials — AP FDA listed —
Acetylcysteine 200 mg/mLthis 83270-0001-04 ONESOURCE 4 vials — AP FDA listed —
About this product: this is a generic version of the medicine. FDA equivalence ratings are shown when available, and other versions are listed above, least expensive first.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

Availability & generic status

🏛️
2023
On the market since
Apr 2023
📍
2026
Currently FDA-listed
3 years listed
🔓
·
Generic on the market
this product is a generic
✅This is a generic drug

This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.

Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

Loading inactive ingredients from the official FDA label in the background. No external source is being called by this page request.
Where does this data come from?
Source: official FDA Structured Product Labeling (SPL) via DailyMed and the openFDA label index. Structured IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

Manufacturer & labeler

LabelerONESOURCE SPECIALTY PHARMA LIMITED
Application holderONESOURCE SPECIALTY PTE LTD
FDA applicationANDA217182 (ANDA)
Labeler code83270
First marketedApr 2023
Product typeHuman Prescription Drug
Portfolio53 products on file
The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Very long sections are excerpted here and marked; the full text is on DailyMed (linked in the sources below). Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration 💊 Dosage Forms and Strengths ⛔ Contraindications ⚠️ Warnings and Cautions 🤒 Adverse Reactions 👥 Use in Specific Populations 🆘 Overdosage 🧬 Clinical Pharmacology 📦 How Supplied / Storage and Handling 📋 Description 🔬 Clinical Studies 🧪 Nonclinical Toxicology 📄 Recent Major Changes 📄 Package Label / Principal Display Panel
🎯 Indications and Usage 89 words ▾

1 INDICATIONS AND USAGE Acetylcysteine injection is indicated to prevent or lessen hepatic injury after ingestion of a potentially hepatotoxic quantity of acetaminophen in adults and pediatric patients who weigh 5 kg or greater with acute ingestion or from repeated supratherapeutic ingestion (RSI). Acetylcysteine injection is an antidote for acetaminophen overdose indicated to prevent or lessen hepatic injury after ingestion of a potentially hepatotoxic quantity of acetaminophen in adults and pediatric patients who weigh 5 kg or greater with an acute ingestion or from repeated supratherapeutic ingestion (RSI) (1).

⏱️ Dosage and Administration ~3 min read ▾

2 DOSAGE AND ADMINISTRATION Pre-Treatment Assessment Following Acute Ingestion (2.1): Prior to initiating treatment with Acetylcysteine injection, decide whether the three-bag or two-bag regimen will be used. Obtain a plasma or serum sample to assay for acetaminophen concentration at least 4 hours after ingestion. • If the time of acetaminophen ingestion is unknown: o Administer a loading dose of Acetylcysteine injection immediately. o Obtain an acetaminophen concentration to determine need for continued treatment. • If the acetaminophen concentration cannot be obtained (or is unavailable or uninterpretable) within the 8-hour time interval after acetaminophen ingestion or there is clinical evidence of acetaminophen toxicity: o Administer a loading dose of Acetylcysteine injection immediately and continue treatment for a total of two doses over 20 hours or three doses over 21 hours (2.5). • If the patient presents more than 8 hours after ingestion and the time of acute acetaminophen ingestion is known: o Administer a loading dose of Acetylcysteine injection immediately o Obtain acetaminophen concentration to determine need for continued treatment • If the patient presents less than 8 hours after ingestion and the time of acute acetaminophen ingestion is known and the acetaminophen concentration is known: o Use the revised Rumack-Matthew nomogram (Figure 1) to determine whether or not to initiate treatment with Acetylcysteine injection (2.2) Nomogram for Estimating Potential for Hepatotoxicity from Acute Acetaminophen Ingestion (2.2): See Full Prescribing Information for instructions on how to use the nomogram to determine the need for dosing.

Preparation and Storage of Diluted Solution Prior to Administration (2.3): • Calculate the dose (mg) based on the patient’s weight in kg; multiple vials of Acetylcysteine injection may be required. o Acetylcysteine injection is hyperosmolar (2,600 mOsmol/L), therefore Acetylcysteine injection must be diluted in the recommended volume of sterile water for injection, 0.45% sodium chloride injection, or 5% dextrose in water injection prior to intravenous administration. In general, 0.45% normal saline is the preferred diluent because it provides a more consistent osmolarity profile, reduces the amount of free water delivered to the patient, and better approximates physiologic fluids.

See Full Prescribing Information for examples of osmolarity depending on the type of solution and Acetylcysteine injection concentration. General Considerations for Selecting the Three-Bag or Two-Bag Regimen (2.4): • It is not known whether the two-bag regimen is comparable to the three-bag regimen in preventing hepatotoxicity. • Patients 40 kg or less should receive the three-bag regimen. • For patients weighing 41 kg or greater, the three-bag regimen may be preferred for those with early signs of severe liver injury or a large acetaminophen ingestion.

Recommended Dosage for Acute Acetaminophen ingestion (2.5): • Acetylcysteine injection is for intravenous administration only. • Total dosage of Acetylcysteine injection is 300 mg/kg given intravenously as either: o 3 separate doses infused over a total of 21 hours OR o 2 separate doses infused over a total of 20 hours. • See Full Prescribing Information for weight-based dosage and weight-based dilution (2.5) See Full Prescribing Information for recommendations for continuing Acetylcysteine injection treatment after 21 hours (2.2) Repeated Supratherapeutic Acetaminophen Ingestion (2.6): • Obtain acetaminophen concentration and other laboratory tests to guide treatment; revised Rumack-Matthew nomogram does not apply.

2.1Pre-Treatment Assessment and Testing Following Acute Acetaminophen Ingestion Prior to initiating treatment with Acetylcysteine injection, decide whether the three-bag or two-bag regimen will be used [see Dosage and Administration (2.4)] . The following recommendations are related to acute acetaminophen ingestion. For recommendations related to repe… [Excerpted — this section continues on DailyMed.]

💊 Dosage Forms and Strengths 27 words ▾

3 DOSAGE FORMS AND STRENGTHS Injection: 6000 mg/30 mL 200mg/mL) of Acetylcysteine in a single-dose vial. Injection: 6000 mg/30 mL (200 mg/mL) in a single-dose vial (3)

⛔ Contraindications 32 words ▾

4 CONTRAINDICATIONS Acetylcysteine injection is contraindicated in patients with a previous hypersensitivity reaction to acetylcysteine [see Warnings and Precautions ( 5.1 )] . Patients with a previous hypersensitivity reaction to acetylcysteine (4)

⚠️ Warnings and Cautions ~2 min read ▾

5 WARNINGS AND PRECAUTIONS Hypersensitivity Reactions: Fatal or life-threatening anaphylaxis, rash, hypotension, wheezing, shortness of breath and/or bronchospasm have been observed. Observe patients during and after the infusion; immediately discontinue infusion if a serious reaction occurs and initiate appropriate treatment. Acetylcysteine injection infusion may be carefully restarted after treatment of hypersensitivity has been initiated and acute symptoms have resolved (5.1).

Fluid Overload: Total volume administered should be reduced for patients weighing less than 40 kg and for those requiring fluid restriction (5.2).

5.1Hypersensitivity Reactions Serious acute hypersensitivity reactions;including fatal or life-threatening anaphylaxis,rash,hypotension,wheezing,and/or shortness of breath;have been observed in patients receiving intravenous acetylcysteine for acetaminophen overdose and occurred soon after initiation of the infusion [see Adverse Reactions (6)] . If a severe hypersensitivity reaction occurs, immediately stop the infusion of Acetylcysteine injection and initiate appropriate treatment. Patients with asthma should be closely monitored during initiation of Acetylcysteine injection therapy and throughout Acetylcysteine injection therapy.

Acute flushing and erythema of the skin may occur in patients receiving acetylcysteine intravenously. These reactions usually occur 30 to 60 minutes after initiating the infusion and often resolve spontaneously despite continued infusion of acetylcysteine. If a reaction to acetylcysteine involves more than simply flushing and erythema of the skin, it should be treated as a hypersensitivity reaction.

Management of less severe hypersensitivity reactions should be based upon the severity of the reaction and include temporary interruption of the infusion and/or administration of antihistaminic drugs. The Acetylcysteine injection infusion may be carefully restarted after treatment of the hypersensitivity symptoms has been initiated and acute symptoms have resolved; however, if the hypersensitivity reaction returns upon re-initiation of treatment or increases in severity, Acetylcysteine injection should be discontinued and alternative patient management should be considered.

5.2Fluid Overload The total volume of Acetylcysteine injection administered should be adjusted for patients less than 40 kg and for those requiring fluid restriction. Intravenous administration of Acetylcysteine injection can cause fluid overload, potentially resulting in hyponatremia, seizure and death. To avoid fluid overload, use the recommended dilution [see Dosage and Administration ( 2.5 )].

🤒 Adverse Reactions ~3 min read ▾

6 ADVERSE REACTIONS Most common adverse reactions (> 2%) are rash, urticaria/facial flushing and pruritus (6.1). To report SUSPECTED ADVERSE REACTIONS, contact Onesource at 1-888-217-8103 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

6.1Clinical Studies Experience The following clinically significant adverse reactions are described elsewhere in labeling: Hypersensitivity Reactions [see Warnings and Precautions (5.1)] Fluid Overload [see Warnings and Precautions (5.2)] 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. In the literature the most frequently reported adverse reactions attributed to intravenous acetylcysteine administration were rash, urticaria and pruritus.

The frequency of adverse reactions has been reported to be between 0.2% and 21%, and they most commonly occur during the initial loading dose of acetylcysteine. Loading Dose/Infusion Rate Study In a randomized, open-label, multi-center clinical study conducted in Australia in patients with acetaminophen poisoning, the rates of hypersensitivity reactions between a 15-minute and 60-minute intravenous infusion for the 150 mg/kg loading dose of acetylcysteine were compared. The incidence of drug-related adverse reactions occurring within the first 2 hours following acetylcysteine administration is presented in Table 4.

Overall, 17% of patients developed an acute hypersensitivity reaction (18% in the 15-minute infusion group; 14% in the 60-minute infusion group) [see Warnings and Precautions ( 5.1 ), Clinical Studies ( 14 )] . Table 4. Incidence of Drug-Related Adverse Reactions Occurring Within the First 2 Hours Following Study Drug Administration by Preferred Term: Loading Dose/Infusion Rate Study Treatment Group 15-minutes 60-minutes Number of Patients n=109 n=71 Cardiac disorders 5 (5%) 2 (3%) Severity: Tachycardia NOS Unkn Mild Moderate Severe Unkn Mild Moderate Severe 4 (4%) 1 (1%) 2 (3%) Gastrointestinal disorders 16 (15%) 7 (10%) Severity: Nausea Vomiting NOS Unkn Mild Moderate Severe Unkn Mild Moderate Severe 1 (1%) 6 (6%) 1 (1%) 1 (1%) 2 (2%) 11 (10%) 2 (3%) 4 (6%) Immune System Disorders 20 (18%) 10 (14%) Severity: Hypersensitivity reaction Unkn Mild Moderate Severe 2 (2%) 6 (6%) 11 (10%) 1 (1%) 4 (6%) 5 (7%) 1 (1%) Respiratory, thoracic and mediastinal disorders 2 (2%) 2 (3%) Severity: Unkn Mild Moderate Severe Unkn Mild Moderate Severe Pharyngitis Rhinorrhea Rhonchi Throat tightness 1 (1%) 1 (1%) 1 (1%) 1 (1%) Skin & subcutaneous tissue disorders 6 (6%) 5 (7%) Severity: Pruritus Rash NOS Unkn Mild Moderate Severe Unkn Mild Moderate Severe 1 (1%) 2 (3%) 3 (3%) 2 (2%) 3 (4%) Vascular disorders 2 (2%) 3 (4%) Severity: Flushing Unkn Mild Moderate Severe Unkn Mild Moderate Severe 1 (1%) 1 (1%) 2 (3%) 1 (1%) Unkn= Unknown; NOS= not otherwise specified Safety Study A large multi-center study was performed in Canada where data were collected from patients who were treated with intravenous acetylcysteine for acetaminophen overdose between 1980 and 2005.

This study evaluated 4709 adult cases and 1905 pediatric cases. The incidence of hypersensitivity reactions in adult (overall incidence 8%) and pediatric (overall incidence 10%) patients is presented in Tables 5 and 6. Table 5.

Distribution of reported hypersensitivity reactions in adult patients receiving intravenous acetylcysteine Reaction Incidence (%) n=4709 Urticaria/Facial Flushing 6.1% Pruritus 4.3% Respiratory Symptoms* 1.9% Edema 1.6% Hypotension 0.1% Anaphylaxis 0.1% *Respiratory symptoms are defined as presence of any of the following: cough, wheezing, stridor, shortness of breath, chest tightness, respiratory distress, or bronchospasm. Table 6. Distribution of reported hypersensitivity reactions in pediatric patients receiving intravenous acetylcysteine Reaction Incidence (%) n=1905 Urt… [Excerpted — this section continues on DailyMed.]

👥 Use in Specific Populations ~2 min read ▾

8 USE IN SPECIFIC POPULATIONS

8.1Pregnancy Risk Summary Limited published case reports and case series of pregnant women exposed to acetylcysteine during various trimesters are not sufficient to inform any drug associated risk. Delaying treatment of acetaminophen overdose may increase the risk of maternal or fetal morbidity and mortality [see Clinical Considerations]. Reproduction studies in rats and rabbits following oral administration of acetylcysteine during the period of organogenesis at doses similar to the total intravenous dose (based on the body surface area) did not cause any adverse effects to the fetus.

The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-Associated Maternal and/or Embryo/Fetal Risk Acetaminophen and acetylcysteine cross the placenta.

Delaying treatment in pregnant women with acetaminophen overdose and potentially toxic acetaminophen plasma levels may increase the risk of maternal and fetal morbidity and mortality. Data Animal Data Reproduction studies have been performed following administration of acetylcysteine during the period of organogenesis in rats at oral doses up to 2000 mg/kg/day (1.1 times the recommended total human intravenous dose of 300 mg/kg based on body surface area comparison) and in rabbits at oral doses up to 1000 mg/kg/day (1.1 times the recommended total human intravenous dose of 300 mg/kg based on body surface area comparison).

No adverse developmental outcomes due to acetylcysteine were observed.

8.2Lactation Risk Summary There are no data on the presence of acetylcysteine in human milk, the effects on the breastfed infant, or the effects on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for Acetylcysteine injection and any potential adverse effects on the breastfed child from Acetylcysteine injection or from the underlying maternal condition. Clinical Considerations Based on the pharmacokinetic data, acetylcysteine should be nearly completely cleared 30 hours after administration.

Breastfeeding women may consider pumping and discarding their milk for 30 hours after administration.

8.4Pediatric Use Safety and effectiveness of Acetylcysteine injection in pediatric patients have not been established by adequate and well- controlled studies. Use of Acetylcysteine injection in pediatric patients 5 kg and greater is based on clinical practice [see Dosage and Administration ( 2.5 )].

🆘 Overdosage 197 words ▾

10 OVERDOSAGE Fatal and life-threatening adverse events have been reported following acetylcysteine overdosage, including anaphylaxis, cerebral edema, and hemolytic-uremic syndrome (HUS). Stop acetylcysteine administration in the setting of suspected acetylcysteine overdosage and manage as clinically indicated. Anaphylaxis, including cases with a fatal outcome, has been reported following acetylcysteine overdosage.

Patients who experienced anaphylaxis following acetylcysteine overdosage often became symptomatic during the loading dose and experienced hypotension, rash, angioedema, bronchospasm, or respiratory distress. Cases of anaphylaxis with acetylcysteine overdosage also described coagulopathy, renal failure, or respiratory failure. Cerebral edema, including cases with a fatal outcome, has been reported following acetylcysteine overdosage.

Patients who experienced cerebral edema following acetylcysteine overdose presented with altered mental status, abnormal pupillary responses, seizures. Some cases of cerebral edema with acetylcysteine overdosage described brain herniation. HUS has been reported following acetylcysteine overdosage.

Patients who experienced HUS presented with microangiopathic hemolytic anemia, thrombocytopenia, and acute kidney injury. Removal of acetylcysteine via hemodialysis has been reported in the literature outside of the context of acetylcysteine overdosage. Studies of hemodialysis in acetaminophen overdose report significant extracorporeal removal of acetylcysteine during hemodialysis.

Contact the Poison Center (1-800-222-1222) for overdosage management recommendations for Acetylcysteine injection including considerations for hemodialysis.

🧬 Clinical Pharmacology ~1 min read ▾

12 CLINICAL PHARMACOLOGY

12.1Mechanism of Action Acetylcysteine has been shown to reduce the extent of liver injury following acetaminophen overdose. Acetaminophen doses of 150 mg/kg or greater have been associated with hepatotoxicity. Acetylcysteine probably protects the liver by maintaining or restoring the glutathione levels, or by acting as an alternate substrate for conjugation with, and thus detoxification of, the reactive metabolite of acetaminophen.

12.3Pharmacokinetics After a single intravenous dose of acetylcysteine, the plasma concentration of total acetylcysteine declined in a poly­-exponential decay manner with a mean terminal half-life (T1/2) of 5.6 hours.The mean clearance (CL) for acetylcysteine was 0.11 liter/hr/kg and renal CL constituted about 30% of the total CL. Distribution : The steady-state volume of distribution (Vd ss ) following administration of an intravenous dose of acetylcysteine was 0.47 liter/kg. The protein binding of acetylcysteine ranges from 66 to 87%.

Elimination Metabolism: Acetylcysteine (i.e., N -acetylcysteine) is postulated to form cysteine and disulfides (N,N-diacetylcysteine and N ­ acetylcysteine). Cysteine is further metabolized to form glutathione and other metabolites. Excretion After a single oral dose of [ 35 S]-acetylcysteine 100 mg, between 13 to 38% of the total radioactivity administered was recovered in urine within 24 hours.

In a separate study, renal clearance was estimated to be approximately 30% of total body clearance. Specific Populations : Hepatic Impairment: Following a 600 mg intravenous dose of acetylcysteine to subjects with mild (Child Pugh Class A, n=1), moderate (Child-Pugh Class B, n=4) or severe (Child-Pugh Class C; n=4) hepatic impairment and 6 healthy matched controls, mean T1/2 increased by 80%. Also, the mean CL decreased by 30% and the systemic acetylcysteine exposure (mean AUC) increased 1.6-fold in subjects with hepatic impairment compared to subjects with normal hepatic function.

These changes are not considered to be clinically meaningful. Renal Impairment: Hemodialysis may remove some of total acetylcysteine.

📦 How Supplied / Storage and Handling 158 words ▾

16 HOW SUPPLIED/STORAGE AND HANDLING Acetylcysteine injection (acetylcysteine) injection is available as a 20% solution (200 mg/mL) in 30 mL single-dose glass vials. Each single dose vial contains 6 g/30mL (200 mg/mL) of Acetylcysteine injection. Acetylcysteine injection is sterile and can be used for intravenous administration.

It is available as follows: Carton of 4 x 30 mL Single-Dose Vials (NDC 83270-001-04) 30 mL Single-Dose Vial (NDC 83270-001-01) Do not use previously opened vials for intravenous administration. Discard unused portion. Note: The color of Acetylcysteine injection may turn from essentially colorless to a slight pink or purple once the stopper is punctured.

The color change does not affect the quality of the product. The stopper in the Acetylcysteine injection vial is formulated with a synthetic base-polymer and does not contain Natural Rubber Latex, Dry Natural Rubber, or blends of Natural Rubber. Store unopened vials at controlled room temperature, 20°C to 25°C (68°F to 77°F) [See USP Controlled Room Temperature]

📋 Description 187 words ▾

11 DESCRIPTION Acetylcysteine injection is an intravenous antidote for the treatment of acetaminophen overdose. Acetylcysteine is the nonproprietary name for the N-acetyl derivative of the naturally occurring amino acid, L-cysteine (N-acetyl-L cysteine,). The compound is a white crystalline powder, which melts in the range of 104° to 110°C and has a very slight odor.

The molecular formula of the compound is C 5 H 9 NO 3 S, and its molecular weight is 163.2. Acetylcysteine has the following structural formula: Acetylcysteine injection is supplied as a sterile solution in vials containing 20% w/v (200 mg/mL) acetylcysteine. The pH of the solution ranges from 6.0 to 7.5.

Acetylcysteine injection contains the following inactive ingredients: sodium hydroxide (used for pH adjustment), Disodium Edetate Dihydrate and Water for Injection, USP. The amount of sodium in Acetylcysteine injection is approximately 30 mg/mL. Because Acetylcysteine injection is administered based on a patient’s weight, the amount of sodium administered in a course of treatment will vary from approximately 225 mg to 4500 mg.

The use of ½ normal saline will contribute approximately an additional 1770 mg of sodium per liter of diluent. Structure

🔬 Clinical Studies ~3 min read ▾

14 CLINICAL STUDIES Loading Dose/Infusion Rate Study A randomized, open-label, multi-center clinical study was conducted in Australia in patients with acetaminophen poisoning to compare the rates of hypersensitivity reactions between two rates of infusion for the intravenous acetylcysteine loading dose. One hundred nine subjects were randomized to a 15-minute infusion rate and seventy-one subjects were randomized to a 60 minute infusion rate. The loading dose was 150 mg/kg followed by a maintenance dose of 50 mg/kg over 4 hours and then 100 mg/kg over 16 hours.

Of the 180 patients, 27% were male and 73% were female. Ages ranged from 15 to 83 years, with the mean age being 30 years ( + 13.0). A subgroup of 58 subjects (33 in the 15-minute infusion group; 25 in the 60-minute infusion group) was treated within 8 hours of acetaminophen ingestion.

No hepatotoxicity occurred within this subgroup; however, with 95% confidence, the true hepatotoxicity rates could range from 0% to 9% for the 15-minute infusion group and from 0% to 12% for the 60-minute infusion group. Observational Study An open-label, observational database contained information on 1749 patients who sought treatment for acetaminophen overdose over a 16-year period. Of the 1749 patients, 65% were female, 34% were male and less than 1% was transgender.

Ages ranged from 2 months to 96 years, with 72% of the patients falling in the 16- to 40-year-old age bracket. A total of 399 patients received acetylcysteine treatment. A post-hoc analysis identified 56 patients who (1) were at high or probable risk for hepatotoxicity (APAP greater than 150 mg/L at the four hours line according to the Australian nomogram) and (2) had a liver function test.

Of the 53 patients who were treated with intravenous acetylcysteine (300 mg/kg intravenous acetylcysteine administered over 20-21 hours) within 8 hours, two (4%) developed hepatotoxicity (AST or ALT greater than 1000 U/L). Twenty-one of 48 (44%) patients treated with acetylcysteine after 15 hours developed hepatotoxicity. The actual number of hepatotoxicity outcomes may be higher than what is reported here.

For patients with multiple admissions for acetaminophen overdose, only the first overdose treated with intravenous acetylcysteine was examined. Hepatotoxicity may have occurred in subsequent admissions. Evaluable data were available from a total of 148 pediatric patients (less than 16 years of age) who were admitted for poisoning following ingestion of acetaminophen, of whom 23 were treated with intravenous acetylcysteine.

There were no deaths of pediatric patients. None of the pediatric patients receiving intravenous acetylcysteine developed hepatotoxicity while two patients not receiving intravenous acetylcysteine developed hepatotoxicity. The number of pediatric patients is too small to provide a statistically significant finding of efficacy; however the results appear to be consistent to those observed for adults.

Three-Bag vs. Two-Bag Regimen Observational Study A multi-center, observational, retrospective cohort study investigated rates of hypersensitivity reactions in 493 patients treated with a two-bag intravenous acetylcysteine regimen compared to 274 patients treated with a three-bag regimen in Denmark between January 2012 and December 2014. The two-bag regimen consisted of a 4 hour loading dose at 200 mg/kg followed by a 16 hour infusion at 100 mg/kg.

The three-bag regimen used a 150 mg/kg loading dose administered over 15 minutes, followed by a second dose of 50 mg/kg over 4 hours and a final dose of 100 mg/kg for 16 hours. Patients in this study were treated with acetylcysteine regardless of plasma acetaminophen concentration. The median (range) serum acetaminophen concentration at presentation was <1 mcg/mL (0-353 mcg/mL) in the total study population, and only 12/767 patients (1.6%) had a serum acetaminophen level that would have warranted acetylcysteine treatment based on the revised Rumack-Mathew nomogram.

Hepatotox… [Excerpted — this section continues on DailyMed.]

🧪 Nonclinical Toxicology ~1 min read ▾

13 NONCLINICAL TOXICOLOGY

13.1Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenesis Long-term studies in animals have not been performed to evaluate the carcinogenic potential of acetylcysteine. Mutagenesis Acetylcysteine was not genotoxic in the Ames test or the in vivo mouse micronucleus test. It was, however, positive in the in vitro mouse lymphoma cell (L5178Y/TK+/-) forward mutation test.

Impairment of Fertility In a fertility study of acetylcysteine in rats, intravenous administration of 1,000 mg/kg/day (0.5 times the recommended human dose of 300 mg/kg based on body surface area) caused a profound reduction of fertility in females, which was correlated with morphological changes in oocytes and severe impairment of implantation (18 of 20 mated females had no implantations). The reversibility of this effect was not evaluated. No effects on fertility were observed in female rats at intravenous doses up to 300 mg/kg/day (0.2 times the recommended human dose based on body surface area), or in male rats at intravenous doses up to 1,000 mg/kg/day.

Mating was unaffected in this study. In a reproduction study of acetylcysteine, male rats were treated orally for 15 weeks prior to mating and during the mating period. A slight non-dose related reduction in fertility was observed at oral doses of 500 and 1,000 mg/kg/day (0.3 and 0.5 times the recommended human intravenous dose, respectively, based on body surface area).

Treatment of male rats with acetylcysteine at an oral dose of 250 mg/kg/day for 15 weeks (0.1 times the recommended human intravenous dose based on body surface comparison) did not affect fertility or general reproductive performance.

📄 Recent Major Changes 9 words ▾

Dosage and Administration (2.1, 2.2, 2.3, 2.4, 2.5) 12/2024

📄 Package Label / Principal Display Panel 88 words ▾

Principal Display Panel PACKAGE LABEL - PRINCIPAL DISPLAY - Acetylcysteine 30 mL Single-Dose Vial Label NDC 83270- 001 -01 Acetylcysteine Injection 6 g/30 mL (200 mg per mL) MUST BE FURTHER DILUTED PRIOR TO INTRAVENOUS USE. Discard unused portion. 30 mL Sterile Single-Dose Vial PACKAGE LABEL - PRINCIPAL DISPLAY - Acetylcysteine 30 mL Single-Dose Vial Carton Panel NDC 83270- 001 -04 Acetylcysteine Injection 6 g/30 mL (200 mg per mL) MUST BE FURTHER DILUTED PRIOR TO INTRAVENOUS USE .

4 x 30 mL Sterile Single-Dose Vials vial-image carton-image

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

Medicare Part D spend CMS · PART D · 2026 (Q1)

Medicare Part D (outpatient prescription) spending for Acetylcysteine — the program that covers self-administered drugs. 8 manufacturers.
⚠️ Drug-level data: CMS publishes Part D spending by drug, not by NDC — these figures combine every manufacturer, strength and package size sold under the name Acetylcysteine. That’s a different level of aggregation than the Medicaid card above, which is specific to this exact 11-digit NDC (pack size included), so the two aren’t directly comparable.
Period
Total Part D spend
$696.9K
Claims incl. refills
6.4K
Beneficiaries
2.6K
Spend / beneficiary
$269.81
Spend / claim
$108.17
Trend by period
💵 About the dollar figures: spending is what Part D plans paid before confidential manufacturer rebates, so the program’s real net cost is lower. A blank patient count means fewer than 11 people — CMS hides counts that small to protect privacy. Source: CMS Medicare Quarterly Part D Spending by Drug (data.cms.gov), updated quarterly.

About this NDC listing & data coverage

Finished prescription product
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Marketing category & status ✓ Available
Active ingredient / dosage form / route ✓ Available
FDA label (SPL via DailyMed) ✓ Available
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Orange Book / therapeutic-equivalence data ✓ Available
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Why is there no price listed?
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Is the NDC printed on the package the same as the 11-digit billing NDC?
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ONESOURCE SPECIALTY PHARMA LIMITED is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.
← 83270-0000-04 · ONESOURCE 83270-0002-02 · ONESOURCE →
For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.