Fomepizole 1 g/mL Injection, Solution, 1 vial — NDC 68475-510-01 (Billing 68475-0510-01)
This is a package of 1 vial of Fomepizole 1 g/mL Injection, Solution from Navinta LLC, marketed since Apr 2021 and currently FDA-listed. It is this product's only package size.
NDC database record
One package, one record: these facts belong to NDC 68475-510-01 alone.
- Record
- FDA NDC Directory package listing · Human prescription drug
- Code segments
- 68475 labeler · 510 product · 01 package
- Package marketed since
- Apr 2, 2021
- Sample package
- No — commercial package
- Listing certified through
- Dec 31, 2026
- Barcode (UPC)
- 0368475510012
- FDA record last changed
- Jul 24, 2026
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
- RxCUI (RxNorm): 310414
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 5, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
RxNorm drug class
This medicine belongs to the Antidote class.
Where does this data come from?
- RxClass (NLM) · catalog refreshed Oct 1, 2026
Clinical
- It's an antidote for antifreeze (ethylene glycol) or methanol poisoning, including when someone is only suspected of swallowing them. It stops the body from turning these into the...
- It's given through an IV by healthcare staff, usually in a hospital. Each dose is diluted and given slowly over about 30 minutes, with repeat doses over time. Your team decides the...
- Headache, nausea, dizziness, drowsiness and a metallic taste are the most common. Tell your nurse or doctor about a rash, vision changes, seizures, a very fast or slow heartbeat, o...
- No. Alcohol and fomepizole slow each other's clearance from the body. Ask your care team about any other medicines you take as well.
Patient education
Supplement & herbal interactions
Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 5, 2026
Ask a licensed pharmacist directly — free, answered by our team.
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 system | Per mL | Per 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. | |
Where does this data come from?
- CMS NADAC weekly file
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · refreshed Oct 5, 2026
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 68475-0510-01 You're viewing this Main listing | 1 VIAL in 1 CARTON / 1.5 mL in 1 VIAL | 2021-04-02 | — | Active |
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| fomepizole 1 g/mL 00517-0710-88 | American | 1 vial | — | AP | FDA listed | — |
| Fomepizole 1.5 g/1.5mL 25021-0829-02 | Sagent | 1 vial | — | AP | FDA listed | — |
| Fomepizole 1 g/mL 67457-0211-02 | Mylan | 1 vial | — | AP | FDA listed | — |
| Fomepizole 1 g/mL 68083-0510-01 | Gland | 1 vial | — | AP | FDA listed | — |
| Fomepizole 1 g/mLthis 68475-0510-01 | Navinta | 1 vial | — | AP | FDA listed | — |
| Fomepizole 1 g/mL 70710-1478-01 | Zydus | 1 vial | — | AP | FDA listed | — |
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Oct 3, 2026
- CMS NADAC weekly file
Availability & generic status
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?
- FDA Orange Book · refreshed Oct 3, 2026
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.
Where does this data come from?
IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.- FDA label on DailyMed · label index refreshed Oct 5, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
Why might an inactive ingredient be missing?
Can inactive ingredients matter?
Manufacturer & labeler
More NDCs from Navinta LLC labeler code 68475
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- famotidine 40 mg/5mL Powder, For Suspension NDC 68475-400-01
- Carmustine Kit NDC 68475-503-01
- Benztropine Mesylate 1 mg/mL Injection NDC 68475-512-02
- Sodium phenylacetate and Sodium benzoate 100 mg/mL; 100 mg/mL Injection, Solution, Concentrate NDC 68475-513-01
- Hydralazine Hydrochloride 20 mg/mL Injection NDC 68475-514-02
- Diazepam 2.5 mg/.5mL Gel NDC 68475-802-02
- Diazepam 10 mg/2mL Gel NDC 68475-803-02
- Diazepam 20 mg/4mL Gel NDC 68475-804-02
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
Full prescribing information FDA SPL
🎯 Indications and Usage ▾
INDICATIONS & USAGE Fomepizole is indicated as an antidote for ethylene glycol (such as antifreeze) or methanol poisoning, or for use in suspected ethylene glycol or methanol ingestion, either alone or in combination with hemodialysis (see DOSAGE AND ADMINISTRATION ).
⏱️ Dosage and Administration ▾
DOSAGE & ADMINISTRATION Do not use polycarbonate syringes or polycarbonate-containing needles (including polycarbonate filter needles) when diluting or administering Fomepizole Injection, 1.5 g/1.5 mL (1 g/mL). Fomepizole can interact with polycarbonate, compromising the integrity of the syringe and/or needle component containing polycarbonate. Treatment Guidelines: If ethylene glycol or methanol poisoning is left untreated, the natural progression of the poisoning leads to accumulation of toxic metabolites, including glycolic and oxalic acids (ethylene glycol intoxication) and formic acid (methanol intoxication).
These metabolites can induce metabolic acidosis, nausea/vomiting, seizures, stupor, coma, calcium oxaluria, acute tubular necrosis, blindness, and death. The diagnosis of these poisonings may be difficult because ethylene glycol and methanol concentrations diminish in the blood as they are metabolized to their respective metabolites. Hence, both ethylene glycol and methanol concentrations and acid base balance, as determined by serum electrolyte (anion gap) and/or arterial blood gas analysis, should be frequently monitored and used to guide treatment.
Treatment consists of blocking the formation of toxic metabolites using inhibitors of alcohol dehydrogenase, such as fomepizole, and correction of metabolic abnormalities. In patients with high ethylene glycol or methanol concentrations (≥ 50 mg/dL), significant metabolic acidosis, or renal failure, hemodialysis should be considered to remove ethylene glycol or methanol and the respective toxic metabolites of these alcohols. Treatment with fomepizole : Begin fomepizole treatment immediately upon suspicion of ethylene glycol or methanol ingestion based on patient history and/or anion gap metabolic acidosis, increased osmolar gap, visual disturbances, or oxalate crystals in the urine, OR a documented serum ethylene glycol or methanol concentration greater than 20 mg/dL.
Hemodialysis : Hemodialysis should be considered in addition to fomepizole in the case of renal failure, significant or worsening metabolic acidosis, or a measured ethylene glycol or methanol concentration of greater than or equal to 50 mg/dL. Patients should be dialyzed to correct metabolic abnormalities and to lower the ethylene glycol concentrations below 50 mg/dL. Discontinuation of fomepizole Treatment : Treatment with fomepizole may be discontinued when ethylene glycol or methanol concentrations are undetectable or have been reduced below 20 mg/dL, and the patient is asymptomatic with normal pH.
Dosing of fomepizole : A loading dose of 15 mg/kg should be administered, followed by doses of 10 mg/kg every 12 hours for 4 doses, then 15 mg/kg every 12 hours thereafter until ethylene glycol or methanol concentrations are undetectable or have been reduced below 20 mg/dL, and the patient is asymptomatic with normal pH. All doses should be administered as a slow intravenous infusion over 30 minutes (see Administration ). Dosage with Renal Dialysis : Fomepizole Injection is dialyzable and the frequency of dosing should be increased to every 4 hours during hemodialysis.
Fomepizole Dosing in Patients Requiring Hemodialysis DOSE AT THE BEGINNING OF HEMODIALYSIS If <6 hours since last fomepizole dose If ≥ 6 hours since last fomepizole dose Do not administer dose Administer next scheduled dose DOSING DURING HEMODIALYSIS Dose every 4 hours DOSING AT THE TIME HEMODIALYSIS IS COMPLETED Time between last dose and the end of hemodialysis <1 hour Do not administer dose at the end of hemodialysis 1-3 hours Administer 1/2 of next scheduled dose >3 hours Administer next scheduled dose MAINTENANCE DOSING OFF HEMODIALYSIS Give next scheduled dose 12 hours from last dose administered Administration : Fomepizole solidifies at temperatures less than 25°C (77°F).
If the fomepizole solution has become solid in the vial, the solution should be liquefied by running the vial under warm water or by holding in the hand. Solidification… [Excerpted — this section continues on DailyMed.]
⛔ Contraindications ▾
CONTRAINDICATIONS Fomepizole should not be administered to patients with a documented serious hypersensitivity reaction to fomepizole or other pyrazoles.
🤒 Adverse Reactions ▾
ADVERSE REACTIONS The most frequent adverse events reported as drug-related or unknown relationship to study drug in the 78 patients and 63 normal volunteers who received fomepizole injection were headache ( 14% ), nausea (11%), and dizziness, increased drowsiness, and bad taste / metallic taste (6% each). All other adverse events in this population were reported in approximately 3% or fewer of those receiving fomepizole and were as follows: Body as a Whole : Abdominal pain, fever, multiorgan system failure, pain during fomepizole injection, inflammation at injection site, lumbalgia/backache, hangover.
Cardiovascular : Sinus bradycardia/bradycardia, phlebosclerosis, tachycardia, phlebitis, shock, hypotension. Gastrointestinal : Vomiting, diarrhea, dyspepsia, heartburn, decreased appetite, transient transaminitis. Hemic/Lymphatic : Eosinophilia/hypereosinophilia, lymphangitis, disseminated intravascular coagulation anemia.
Nervous : Lightheadedness, seizure, agitation, feeling drunk, facial flush, vertigo, nystagmus, anxiety, "felt strange", decreased environmental awareness. Respiratory : Hiccups, pharyngitis. Skin/Appendages : Application site reaction, rash.
Special Senses : Abnormal smell, speech/visual disturbances, transient blurred vision, roar in ear. Urogenital : Anuria
🆘 Overdosage ▾
OVERDOSAGE Nausea, dizziness, and vertigo were noted in healthy volunteers receiving 50 and 100 mg/kg doses of fomepizole (at plasma concentrations of 290 to 520 µmol/L, 23.8 to 42.6 mg/L). These doses are 3 to 6 times the recommended dose. This dose-dependent CNS effect was short-lived in most subjects and lasted up to 30 hours in one subject. Fomepizole is dialyzable, and hemodialysis may be useful in treating cases of overdosage.
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY Mechanism of Action : Fomepizole is a competitive inhibitor of alcohol dehydrogenase. Alcohol dehydrogenase catalyzes the oxidation of ethanol to acetaldehyde. Alcohol dehydrogenase also catalyzes the initial steps in the metabolism of ethylene glycol and methanol to their toxic metabolites.
Ethylene glycol, the main component of most antifreezes and coolants, is metabolized to glycoaldehyde, which undergoes subsequent sequential oxidations to yield glycolate, glyoxylate, and oxalate. Glycolate and oxalate are the metabolic byproducts primarily responsible for the metabolic acidosis and renal damage seen in ethylene glycol toxicosis. The lethal dose of ethylene glycol in humans is approximately 1.4mL/kg.
Methanol, the main component of windshield wiper fluid, is slowly metabolized via alcohol dehydrogenase to formaldehyde with subsequent oxidation via formaldehyde dehydrogenase to yield formic acid. Formic acid is primarily responsible for the metabolic acidosis and visual disturbances (e.g., decreased visual acuity and potential blindness) associated with methanol poisoning. A lethal dose of methanol in humans is approximately 1 to 2mL/kg.
Fomepizole has been shown in vitro to block alcohol dehydrogenase enzyme activity in dog, monkey, and human liver. The concentration of fomepizole at which alcohol dehydrogenase is inhibited by 50% in vitro is approximately 0.1µmol/L. In a study of dogs given a lethal dose of ethylene glycol, three animals each were administered fomepizole, ethanol, or left untreated (control group).
The three animals in the untreated group became progressively obtunded, moribund, and died. At necropsy, all three dogs had severe renal tubular damage. Fomepizole or ethanol, given 3 hours after ethylene glycol ingestion, attenuated the metabolic acidosis and prevented the renal tubular damage associated with ethylene glycol intoxication.
Several studies have demonstrated that fomepizole plasma concentrations of approximately 10 µmol/L (0.82 mg/L) in monkeys are sufficient to inhibit methanol metabolism to formate, which is also mediated by alcohol dehydrogenase. Based on these results, concentrations of fomepizole in humans in the range of 100 to 300 µmol/L (8.6 to 24.6 mg/L) have been targeted to assure adequate plasma concentrations for the effective inhibition of alcohol dehydrogenase. In healthy volunteers, oral doses of fomepizole (10 to 20 mg/kg) significantly reduced the rate of elimination of moderate doses of ethanol, which is also metabolized through the action of alcohol dehydrogenase ( see PRECAUTIONS , Drug Interactions ).
Pharmacokinetics : The plasma half-life of fomepizole varies with dose, even in patients with normal renal function, and has not been calculated. Distribution : After intravenous infusion, fomepizole rapidly distributes to total body water. The volume of distribution is between
0.6L/kg and 1.02L/kg. Metabolism : In healthy volunteers, only 1 to 3.5% of the administered dose of fomepizole (7 to 20 mg/kg oral and IV) was excreted unchanged in the urine, indicating that metabolism is the major route of elimination. In humans, the primary metabolite of fomepizole is 4-carboxypyrazole (approximately 80 to 85% of administered dose), which is excreted in the urine.
Other metabolites of fomepizole observed in the urine are 4-hydroxymethylpyrazole and the N-glucuronide conjugates of 4-carboxypyrazole and 4-hydroxymethylpyrazole. Excretion : The elimination of fomepizole is best characterized by Michaelis-Menten kinetics after acute doses, with saturable elimination occurring at therapeutic blood concentrations [100 to 300 µmol/L, 8.2 to 24.6mg/L]. With multiple doses, fomepizole rapidly induces its own metabolism via the cytochrome P450 mixed-function oxidase system, which produces a significant increase in the elimination rate after about 30 to 40 hours.
After enzyme induction, elimination follows first-order kinetics. Special Populations : Geriatric : Fomepizole… [Excerpted — this section continues on DailyMed.]
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED Fomepizole Injection is available as a sterile, preservative-free solution for intravenous use, in vials containing1.5mL (1 g/mL) of fomepizole. Fomepizole injection is supplied in cartons of one single use vial (NDC 68475- 510 -01) Store at controlled room temperature, 20° to 25°C (68° to 77°F). Manufactured for: Navinta LLC Ewing, NJ 08618 Revised: 01/2023 30271218 R5
📋 Description ▾
DESCRIPTION Fomepizole Injection is a competitive inhibitor of alcohol dehydrogenase. The chemical name of fomepizole is 4-methylpyrazole. It has the molecular formula C 4 H 6 N 2 and a molecular weight of 82.1.
The structural formula is: It is a clear to yellow liquid at room temperature. Its melting point is 25°C(77°F) and it may present as solid form at room temperature. Fomepizole is soluble in water and very soluble in ethanol, diethyl ether, and chloroform.
Each vial contains 1.5 mL (1 g/mL) of fomepizole. Image
⚠️ Precautions ▾
PRECAUTIONS General : Fomepizole should not be given undiluted or by bolus injection. Venous irritation and phlebosclerosis were noted in two of six normal volunteers given bolus injections (over 5 minutes) of fomepizole at a concentration of 25 mg/mL. Do not use polycarbonate syringes or polycarbonate-containing needles (including polycarbonate filter needles) when diluting or administering Fomepizole Injection, 1.5 g/1.5 mL (1 g/mL).
Fomepizole can interact with polycarbonate, compromising the integrity of the syringe and/or needle component containing polycarbonate. Minor allergic reactions (mild rash, eosinophilia) have been reported in a few patients receiving fomepizole (see ADVERSE REACTIONS ). Therefore, patients should be monitored for signs of allergic reactions.
Laboratory Tests : In addition to specific antidote treatment with fomepizole, patients intoxicated with ethylene glycol or methanol must be managed for metabolic acidosis, acute renal failure (ethylene glycol), adult respiratory distress syndrome, visual disturbances (methanol), and hypocalcemia. Fluid therapy and sodium bicarbonate administration are potential supportive therapies. In addition, potassium and calcium supplementation and oxygen administration are usually necessary.
Hemodialysis is necessary in the anuric patient, or in patients with severe metabolic acidosis or azotemia (see DOSAGE AND ADMINISTRATION ). Treatment success should be assessed by frequent measurements of blood gases, pH, electrolytes, BUN, creatinine, and urinalysis, in addition to other laboratory tests as indicated by individual patient conditions. At frequent intervals throughout the treatment, patients poisoned with ethylene glycol should be monitored for ethylene glycol concentrations in serum and urine, and the presence of urinary oxalate crystals.
Similarly, serum methanol concentrations should be monitored in patients poisoned with methanol. Electrocardiography should be performed because acidosis and electrolyte imbalances can affect the cardiovascular system. In the comatose patient, electroencephalography may also be required.
In addition, hepatic enzymes and white blood cell counts should be monitored during treatment, as transient increases in serum transaminase concentrations and eosinophilia have been noted with repeated fomepizole dosing. Drug Interactions : Oral doses of fomepizole (10 to 20 mg/kg), via alcohol dehydrogenase inhibition, significantly reduced the rate of elimination of ethanol (by approximately 40%) given to healthy volunteers in moderate doses. Similarly, ethanol decreased the rate of elimination of fomepizole (by approximately 50%) by the same mechanism.
Reciprocal interactions may occur with concomitant use of fomepizole and drugs that increase or inhibit the cytochrome P450 system (e.g., phenytoin, carbamazepine, cimetidine, ketoconazole), though this has not been studied. Carcinogenesis, Mutagenesis, and Impairment Of Fertility : There have been no long-term studies performed in animals to evaluate carcinogenic potential. There was a positive Ames test result in the Escherichia coli tester strain WP2uvrA and the Salmonella typhimurium tester strain TA102 in the absence of metabolic activation.
There was no evidence of a clastogenic effect in the in vivo mouse micronucleus assay. In rats, fomepizole (110 mg/kg) administered orally for 40 to 42 days resulted in decreased testicular mass (approximately 8% reduction). This dose is approximately 0.6 times the human maximum daily exposure based on surface area (mg/m 2 ).
This reduction was similar for rats treated with either ethanol or fomepizole alone. When fomepizole was given in combination with ethanol, the decrease in testicular mass was significantly greater (approximately 30% reduction) compared to those rats treated exclusively with fomepizole or ethanol. Pregnancy : Pregnancy Category C: Animal reproduction studies have not been conducted with fomepizole.
It is also not known whether fom… [Excerpted — this section continues on DailyMed.]
📄 Package Label / Principal Display Panel ▾
PACKAGE LABEL.PRINCIPAL DISPLAY PANEL vial label carton label
About this NDC listing & data coverage
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| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | ✓ Available |
| Inactive ingredients (structured) | — Not published for this NDC The labeler did not submit a structured excipient list, or no SPL is available. |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | ✓ Available |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold. |