HomeNDC LookupIngredientsCefazolin › 00404-9833-99
CEFAZOLIN 1 g Injection, Powder, For Solution, 1 vial — NDC 00404-9833-99 package photo

CEFAZOLIN 1 g Injection, Powder, For Solution, 1 vial

by Henry Schein, Inc. · 1 VIAL, SINGLE-DOSE in 1 BAG (0404-9833-99) / 1 INJECTION, POWDER, FOR SOLUTION in 1 VIAL, SINGLE-DOSE
NDC 00404-9833-99
🏷️ FDA NDC (as labeled) 0404-9833-99 billing pads the labeler segment with a zero
Rx only Generic On market Non-controlled
🗂️ Data synced Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →
⚠️
Other active recalls for Cefazolin (different manufacturers) — 1 · tap to view
These affect other manufacturers’ products for the same ingredient — not necessarily the exact NDC on this page.
Class I · Jun 27, 2025 — Labeling: Label Mix-Up; cartons of Cefazolin for Injection, USP 1 gram were found to contain vials labeled as penicillin G potassium for Injection, USP, 20 million Unit. The vials contained Cefozalin (Sandoz Inc) · FDA recall D-0569-2025
Each entry is an official FDA enforcement report — look up any recall number in the FDA recall database ↗

🆔 Identity & classification

FDA NDC (as labeled) 0404-9833-99
Product NDC 0404-9833
11-digit billing NDC 00404983399
RxCUI 1665050
UNII P380M0454Z
Application # ANDA203661
SPL Set ID 5a8c4bb2-a75e-4d7d-91fb-9a95f04fc94b
Established class (EPC) Cephalosporin Antibacterial
Chemical class Cephalosporins
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2022-01-09
Route INTRAMUSCULAR, INTRAVENOUS
Dosage form INJECTION, POWDER, FOR SOLUTION
Substance CEFAZOLIN SODIUM
TE code (Orange Book) AP · RLD · RS
Why two NDCs? The FDA registers this code as 0404-9833-99 — a 4-4-2 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 labeler segment → 00404-9833-99. 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 Cephalosporin Antibacterial class.

Pharmacologic class Cephalosporin Antibacterial
Drug family (ATC) First-generation cephalosporins
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.

🏭 Manufacturer & labeler

LabelerHenry Schein, Inc.
Application holderQILU ANTIBIOTICS PHARMACEUTICAL CO LTD
FDA applicationANDA203661 (ANDA)
Labeler code00404
First marketedJan 2022
Product typeHuman Prescription Drug
Portfolio171 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.

🩺 Clinical

📖 What it is MedlinePlus · NLM

Cefazolin injection is used to treat certain infections caused by bacteria. Cefazolin injection also may be used around the time of surgery in order to prevent the patient from getting an infection. Cefazolin injection is in a class of medications called cephalosporin antibiotics. It works by killing bacteria. Antibiotics such as cefazolin injection will not work for colds, flu, or other viral infections. Taking antibiotics when they are not needed may cause them not to work later when you do have an infection from bacteria.

Read the full MedlinePlus article ↗
📗 Our plain-language guide HelloPharmacist
  • Cefazolin treats a wide range of serious bacterial infections — things like pneumonia, urinary tract infections, skin infections, bone and joint infections, and even bloodstream in...
  • What kinds of infections does cefazolin treat?
  • No, cefazolin only comes as an injection. It's either given directly into a vein (IV) or into a muscle (IM), depending on the product being used. A nurse or other healthcare profes...
  • How will I receive cefazolin — do I take a pill?
📖 Read our full Cefazolin guide →
7
Nutrient depletion considerations

Cefazolin may be associated with lower levels of 7 nutrients — worth a chat with your pharmacist, not a cause for alarm.

An association is not a deficiency. Educational only — don't start or stop anything without professional guidance.
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.

🧪 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.

A current SPL was checked, but it does not contain a structured or narrative inactive-ingredient list for this product. This does not mean the product has no inactive ingredients.
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.

💲 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 · Q2 2026 $1.50
Medicare Part B allowsASP · J0690 $0.796 / J0690 unit
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.

🧾 Billing & reimbursement

FDA NDC (as labeled)0404-9833-99
11-digit billing NDC00404-9833-99
Format4-4-2 as registered → padded to 5-4-2 for billing (zero added to the labeler segment)
HCPCS J-codeJ0690
DescriptorInjection, cefazolin sodium, 500 mg
Billing units / pkg2 units
Crosswalk sourceCMS ASP NDC-HCPCS Crosswalk
Where does this data come from?
The HCPCS J-code crosswalk comes from the CMS ASP NDC-HCPCS crosswalk and the DMEPDAC (DME MAC) NDC-HCPCS crosswalk — free public CMS data. Billing units are derived from the code’s descriptor and the package amount.

🔁 Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Cefazolin 330 mg/mL 00143-9262-25 Hikma 25 vials $1.030 AP Availability likely
Cefazolin 330 mg/mL 00143-9924-90 Hikma 3 ml $1.030 AP Availability likely
Cefazolin 1 g 00781-3451-96 Sandoz 25 vials $1.030 AP Availability likely
Cefazolin 1 g 44567-0120-25 WG 25 vials $1.030 AP Availability likely
Cefazolin 1 g 44567-0707-25 WG 25 vials $1.030 AP Availability likely
Cefazolin 1 g 60505-6142-05 Apotex 25 vials $1.030 AP Availability likely
Cefazolin 1 g 60505-6243-04 Apotex 25 vials $1.030 AP Availability likely
Cefazolin 1 g/3mL 63323-0237-10 Fresenius 25 vials $1.030 AP Availability likely
Cefazolin 1 g 72572-0055-25 Civica, 25 vials $1.030 AP Availability likely
Cefazolin Sodium 1 g/50mL 00264-3103-11 B. 50 ml Discontinued
Cefazolin 1 g/50mL 00338-3503-41 Baxter 50 ml FDA listed
Cefazolin 1 gthis 00404-9833-99 Henry 1 vial AP FDA listed
Cefazolin 330 mg/mL 00404-9834-99 Henry 1 vial AP FDA listed
Cefazolin 1 g 00409-2585-01 Hospira, 25 vials FDA listed
Cefazolin 330 mg/mL 50090-4256-00 A-S 25 vials AP FDA listed
Cefazolin 1 g 67184-1001-02 Qilu 25 vials AP FDA listed
Cefazolin 1 g 71205-0679-01 Proficient 1 vial AP FDA listed
Cefazolin 330 mg/mL 71872-7027-01 Medical 1 vial AP FDA listed
Cefazolin 1 g 71872-7141-01 Medical 1 vial AP FDA listed
Cefazolin Sodium 1 g 72189-0584-01 Direct_rx 1 injection AP FDA listed
Cefazolin 1 g 84549-0142-05 ProPharma 1 injection 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

🏛️
2022
On the market since
Jan 2022
📍
2026
Currently FDA-listed
4 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.

🔬 Reported adverse events (FAERS)

Read carefully: FAERS reports are voluntary and unverified. Counts are not incidence, do not establish causation, are subject to reporting bias, and cannot be used to compare one drug to another. Shown for signal context only. Reports for Cefazolin — the ingredient across all brands.

Top reported reactions

Hypotension702
Anaphylactic Reaction644
Anaphylactic Shock601
Rash592
Pyrexia512
Renal Failure488
Acute Kidney Injury432

Age at onset

Neonate111
Infant24
Child83
Adolescent59
Adult997
Elderly653

Reporter sex

11,986 reports
Male · 51%
Female · 49%
Unknown · 0%

Serious outcomes

Hospitalization6,061
Life-threatening2,101
Death1,387
Disabling302
Reports over time (by year) — tap or hover for the count & year
2019 2021 2023 2026 1,008 0
Most recent year is provisional (FAERS lags ~3 months).
Where does this data come from?
Adverse-event reports from the FDA Adverse Event Reporting System (FAERS) via openFDA. FAERS reports are voluntary and unverified — counts are not incidence and don’t establish causation.

📦 Packaging — all sizes for this product

Package NDCDescription Marketing startStatus
00404-9833-99 You're viewing this 1 VIAL, SINGLE-DOSE in 1 BAG (0404-9833-99) / 1 INJECTION, POWDER, FOR SOLUTION in 1 VIAL, SINGLE-DOSE 2022-01-09 Active

🧭 About this NDC listing & data coverage

Finished prescription product
What data is (and isn’t) available for this NDC — tap to expand
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 ✓ Available
Medicaid utilization (CMS SDUD) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The FDA registers it as 0404-9833-99, which is what is printed on the packaging and shown on DailyMed. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero: 00404-9833-99, written without dashes as 00404983399. The Identity section at the top of this page lists every form of this code.
What do the three segments of this NDC mean?
In 00404-9833-99, the first segment (00404) is the labeler code FDA assigned to Henry Schein, Inc.; the middle segment (9833) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (99) identifies this exact package size and type. Together they name one specific package of one specific product.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Henry Schein, Inc.. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
Henry Schein, Inc. 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.
Does this product have a billing J-code?
Yes — this NDC cross-references HCPCS code J0690 for medical-claim billing (typically used when a product is administered in a clinical setting rather than dispensed at a retail pharmacy). See the Billing section on this page.
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.

📄 Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ~2 min read

Indications and Usage Cefazolin for Injection, USP is indicated in the treatment of the following serious infections due to susceptible organisms: Respiratory Tract Infections: Due to S. pneumoniae, Klebsiella species, H. influenzae, S. aureus (penicillin-sensitive and penicillin-resistant), and group A beta-hemolytic streptococci. Injectable benzathine penicillin is considered to be the drug of choice in treatment and prevention of streptococcal infections, including the prophylaxis of rheumatic fever. Cefazolin for Injection, USP is effective in the eradication of streptococci from the nasopharynx; however, data establishing the efficacy of Cefazolin for Injection, USP in the subsequent prevention of rheumatic fever are not available at present.

Urinary Tract Infections: Due to E. coli, P. mirabilis , Klebsiella species, and some strains of enterobacter and enterococci. Skin and Skin Structure Infections: Due to S.aureus (penicillin-sensitive and penicillin-resistant) , group A beta-hemolytic streptococci, and other strains of streptococci. Biliary Tract Infections: Due to E. coli , various strains of streptococci, P. mirabilis, Klebsiella species, and S. aureus.

Bone and Joint Infections : Due to S. aureus . Genital Infections: (i.e., prostatitis, epididymitis) due to E. coli, P. mirabilis , Klebsiella species, and some strains of enterococci. Septicemia: Due to S. pneumoniae, S. aureus (penicillin-sensitive and penicillin-resistant), P. mirabilis, E. coli, and Klebsiella species.

Endocarditis: Due to S. aureus (penicillin-sensitive and penicillin-resistant) and group A beta-hemolytic streptococci. Perioperative Prophylaxis: The prophylactic administration of Cefazolin for Injection, USP preoperatively, intraoperatively, and postoperatively may reduce the incidence of certain postoperative infections in patients undergoing surgical procedures which are classified as contaminated or potentially contaminated (e.g., vaginal hysterectomy, and cholecystectomy in high-risk patients such as those older than 70 years, with acute cholecystitis, obstructive jaundice, or common duct bile stones).

The perioperative use of Cefazolin for Injection, USP may also be effective in surgical patients in whom infection at the operative site would present a serious risk (e.g., during open-heart surgery and prosthetic arthroplasty). The prophylactic administration of Cefazolin for Injection, USP should usually be discontinued within a 24-hour period after the surgical procedure. In surgery where the occurrence of infection may be particularly devastating (e.g., open-heart surgery and prosthetic arthroplasty), the prophylactic administration of Cefazolin for Injection, USP may be continued for 3 to 5 days following the completion of surgery.

If there are signs of infection, specimens for cultures should be obtained for the identification of the causative organism so that appropriate therapy may be instituted. (See DOSAGE AND ADMINISTRATION.) To reduce the development of drug-resistant bacteria and maintain the effectiveness of Cefazolin for Injection, USP and other antibacterial drugs, Cefazolin for Injection, USP should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy.

In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.

⏱️ Dosage and Administration ~3 min read

Dosage and Administration *In rare instances, doses of up to 12 grams of Cefazolin for Injection, USP per day have been used. Perioperative Prophylactic Use: To prevent postoperative infection in contaminated or potentially contaminated surgery, recommended doses are: a. 1 gram IV or IM administered ½ hour to 1 hour prior to the start of surgery. b.

For lengthy operative procedures (e.g., 2 hours or more), 500 mg to 1 gram IV or IM during surgery (administration modified depending on the duration of the operative procedure). c. 500 mg to 1 gram IV or IM every 6 to 8 hours for 24 hours postoperatively. It is important that (1) the preoperative dose be given just (½ to 1 hour) prior to the start of surgery so that adequate antibiotic levels are present in the serum and tissues at the time of initial surgical incision; and (2) Cefazolin for Injection, USP be administered, if necessary, at appropriate intervals during surgery to provide sufficient levels of the antibiotic at the anticipated moments of greatest exposure to infective organisms.

In surgery where the occurrence of infection may be particularly devastating (e.g., open-heart surgery and prosthetic arthroplasty), the prophylactic administration of Cefazolin for Injection, USP may be continued for 3 to 5 days following the completion of surgery. Dosage Adjustment for Patients With Reduced Renal Function: Cefazolin for Injection, USP may be used in patients with reduced renal function with the following dosage adjustments: Patients with a creatinine clearance of 55 mL/min. or greater or a serum creatinine of 1.5 mg % or less can be given full doses.

Patients with creatinine clearance rates of 35 to 54 mL/min. or serum creatinine of 1.6 to 3.0 mg % can also be given full doses but dosage should be restricted to at least 8 hour intervals. Patients with creatinine clearance rates of 11 to 34 mL/min. or serum creatinine of 3.1 to 4.5 mg % should be given ½ the usual dose every 12 hours. Patients with creatinine clearance rates of 10 mL/min. or less or serum creatinine of 4.6 mg % or greater should be given ½ the usual dose every 18 to 24 hours.

All reduced dosage recommendations apply after an initial loading dose appropriate to the severity of the infection. Patients undergoing peritoneal dialysis: See CLINICAL PHARMACOLOGY. Pediatric Dosage: In pediatric patients, a total daily dosage of 25 to 50 mg per kg (approximately 10 to 20 mg per pound) of body weight, divided into 3 or 4 equal doses, is effective for most mild to moderately severe infections.

Total daily dosage may be increased to 100 mg per kg (45 mg per pound) of body weight for severe infections. Since safety for use in premature infants and in neonates has not been established, the use of Cefazolin for Injection, USP in these patients is not recommended. In pediatric patients with mild to moderate renal impairment (creatinine clearance of 70 to 40 mL/min.), 60 percent of the normal daily dose given in equally divided doses every 12 hours should be sufficient.

In patients with moderate impairment (creatinine clearance of 40 to 20 mL/min.), 25 percent of the normal daily dose given in equally divided doses every 12 hours should be adequate. Pediatric patients with severe renal impairment (creatinine clearance of 20 to 5 mL/min.) may be given 10 percent of the normal daily dose every 24 hours. All dosage recommendations apply after an initial loading dose.

RECONSTITUTION Preparation of Parenteral Solution: Parenteral drug products should be SHAKEN WELL when reconstituted, and inspected visually for particulate matter prior to administration. If particulate matter is evident in reconstituted fluids, the drug solutions should be discarded. When reconstituted or diluted according to the instructions below, Cefazolin for Injection, USP is stable for 24 hours at room temperature or for 10 days if stored under refrigeration (5°C or 41 °F).

Reconstituted solutions may range in color from pale yellow to yellow without a cha…

Contraindications 18 words

Contraindications CEFAZOLIN FOR INJECTION, USP IS CONTRAINDICATED IN PATIENTS WITH KNOWN ALLERGY TO THE CEPHALOSPORIN GROUP OF ANTIBIOTICS.

⚠️ Warnings ~1 min read

Warnings BEFORE THERAPY WITH CEFAZOLIN FOR INJECTION, USP IS INSTITUTED, CAREFUL INQUIRY SHOULD BE MADE TO DETERMINE WHETHER THE PATIENT HAS HAD PREVIOUS HYPERSENSITIVITY REACTIONS TO CEFAZOLIN, CEPHALOSPORINS, PENICILLINS, OR OTHER DRUGS. IF THIS PRODUCT IS GIVEN TO PENICILLIN-SENSITIVE PATIENTS, CAUTION SHOULD BE EXERCISED BECAUSE CROSS-HYPERSENSITIVITY AMONG BETA-LACTAM ANTIBIOTICS HAS BEEN CLEARLY DOCUMENTED AND MAY OCCUR IN UP TO 10% OF PATIENTS WITH A HISTORY OF PENICILLIN ALLERGY. IF AN ALLERGIC REACTION TO CEFAZOLIN FOR INJECTION, USP OCCURS, DISCONTINUE TREATMENT WITH THE DRUG.

SERIOUS ACUTE HYPERSENSITIVITY REACTIONS MAY REQUIRE TREATMENT WITH EPINEPHRINE AND OTHER EMERGENCY MEASURES, INCLUDING OXYGEN, IV FLUIDS, IV ANTIHISTAMINES, CORTICOSTEROIDS, PRESSOR AMINES, AND AIRWAY MANAGEMENT, AS CLINICALLY INDICATED. Pseudomembranous colitis has been reported with nearly all antibacterial agents, including cefazolin, and may range in severity from mild to life-threatening. Therefore, it is important to consider this diagnosis in patients who present with diarrhea subsequent to the administration of antibacterial agents.

Treatment with antibacterial agents alters the normal flora of the colon and may permit overgrowth of clostridia. Studies indicate that a toxin produced by Clostridium difficile is a primary cause of "antibiotic-associated colitis." After the diagnosis of pseudomembranous colitis has been established, therapeutic measures should be initiated. Mild cases of pseudomembranous colitis usually respond to drug discontinuation alone.

In moderate to severe cases, consideration should be given to management with fluids and electrolytes, protein supplementation, and treatment with an oral antibacterial drug clinically effective against C.difficile colitis.

🤒 Adverse Reactions 159 words

Adverse Reactions The following reactions have been reported: Gastrointestinal: Diarrhea, oral candidiasis (oral thrush), vomiting, nausea, stomach cramps, anorexia, and pseudomembranous colitis. Onset of pseudomembranous colitis symptoms may occur during or after antibiotic treatment (see WARNINGS). Nausea and vomiting have been reported rarely.

Allergic: Anaphylaxis, eosinophilia, itching, drug fever, skin rash, Stevens-Johnson syndrome. Hematologic: Neutropenia, leukopenia, thrombocytopenia, thrombocythemia. Hepatic: Transient rise in SGOT, SGPT, and alkaline phosphatase levels has been observed.

As with other cephalosporins, reports of hepatitis have been received. Renal: As with other cephalosporins, reports of increased BUN and creatinine levels, as well as renal failure, have been received. Local Reactions: Rare instances of phlebitis have been reported at site of injection.

Pain at the site of injection after intramuscular administration has occurred infrequently. Some induration has occurred. Other Reactions: Genital and anal pruritus (including vulvar pruritus, genital moniliasis, and vaginitis).

To report SUSPECTED ADVERSE REACTIONS, contact Apotex Corp. at 1-800-706-5575 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

🧬 Clinical Pharmacology ~3 min read

Clinical Pharmacology After intramuscular administration of Cefazolin for Injection, USP to normal volunteers, the mean serum concentrations were 37 mcg/mL at 1 hour and 3 mcg/mL at 8 hours following a 500-mg dose, and 64 mcg/mL at 1 hour and 7 mcg/mL at 8 hours following a 1-gram dose. Studies have shown that following intravenous administration of Cefazolin for Injection, USP to normal volunteers, mean serum concentrations peaked at approximately 185 mcg/mL and were approximately 4 mcg/mL at 8 hours for a 1-gram dose.

The serum half-life for Cefazolin for Injection, USP is approximately 1.8 hours following IV administration and approximately 2.0 hours following IM administration. In a study (using normal volunteers) of constant intravenous infusion with dosages of 3.5 mg/kg for 1 hour (approximately 250 mg) and 1.5 mg/kg the next 2 hours (approximately 100 mg), Cefazolin for Injection, USP produced a steady serum level at the third hour of approximately 28 mcg/mL. Studies in patients hospitalized with infections indicate that Cefazolin for Injection, USP produces mean peak serum levels approximately equivalent to those seen in normal volunteers.

Bile levels in patients without obstructive biliary disease can reach or exceed serum levels by up to 5 times; however, in patients with obstructive biliary disease, bile levels of Cefazolin for Injection, USP are considerably lower than serum levels (< 1.0 mcg/mL). In synovial fluid, the level of Cefazolin for Injection, USP becomes comparable to that reached in serum at about 4 hours after drug administration. Studies of cord blood show prompt transfer of Cefazolin for Injection, USP across the placenta.

Cefazolin for Injection, USP is present in very low concentrations in the milk of nursing mothers. Cefazolin for Injection, USP is excreted unchanged in the urine. In the first 6 hours approximately 60% of the drug is excreted in the urine and this increases to 70% to 80% within 24 hours.

Cefazolin for Injection, USP achieves peak urine concentrations of approximately 2,400 mcg/mL and 4,000 mcg/mL respectively following 500-mg and 1-gram intramuscular doses. In patients undergoing peritoneal dialysis (2 L/hr.), Cefazolin for Injection, USP produced mean serum levels of approximately 10 and 30 mcg/mL after 24 hours’ instillation of a dialyzing solution containing 50 mg/L and 150 mg/L, respectively. Mean peak levels were 29 mcg/mL (range 13 to 44 mcg/mL) with 50 mg/L (3 patients), and 72 mcg/mL (range 26 to 142 mcg/mL) with 150 mg/L (6 patients).

Intraperitoneal administration of Cefazolin for Injection, USP is usually well tolerated. Controlled studies on adult normal volunteers, receiving 1 gram 4 times a day for 10 days, monitoring CBC, SGOT, SGPT, bilirubin, alkaline phosphatase, BUN, creatinine, and urinalysis, indicated no clinically significant changes attributed to Cefazolin for Injection, USP. Microbiology Mechanism of Action Cefazolin is a bactericidal agent that acts by inhibition of bacterial cell wall synthesis.

Resistance Predominant mechanisms of bacterial resistance to cephalosporins include the presence of extended-spectrum beta-lactamases and enzymatic hydrolysis. Antimicrobial Activity Cefazolin has been shown to be active against most isolates of the following microorganisms, both in vitro and in clinical infections as described in the INDICATIONS AND USAGE section. Gram-Positive Bacteria Staphylococcus aureus Staphylococcus epidermidis Streptococcus agalactiae Streptococcus pneumoniae Streptococcus pyogenes Methicillin-resistant staphylococci are uniformly resistant to cefazolin.

Gram-Negative Bacteria Escherichia coli Proteus mirabilis Most isolates of indole positive Proteus (Proteus vulgaris), Enterobacter spp., Morganella morganii, Providencia rettgeri, Serratia spp., and Pseudomonas spp. are resistant to cefazolin. Susceptibility Testing For specific information regarding susceptibility test interpretive criteria and associated test methods and quality contr…

📦 How Supplied / Storage and Handling 184 words

How Supplied Each vial of Cefazolin for Injection, USP contains cefazolin sodium equivalent to 1 gram 2 grams, or 3 grams cefazolin. NDC 60505-6142-5, 1 gram, carton of 25 vials NDC 60505-6231-5, 2 grams, carton of 25 vials NDC 60505-6266-5, 3 grams, carton of 25 vials As with other cephalosporins, cefazolin tends to darken depending on storage conditions; within the stated recommendations, however, product potency is not adversely affected. Before reconstitution protect from light and store at 20° to 25° C (68° to 77°F) [See USP Controlled Room Temperature].

CLINITEST is a registered trademark of Miles, Inc. CLINISTIX is a registered trademark of Bayer Corporation. Product repackaged by: Henry Schein, Inc., Bastian, VA 24314 From Original Manufacturer/Distributor's NDC and Unit of Sale To Henry Schein Repackaged Product NDC and Unit of Sale Total Strength/Total Volume (Concentration) per unit NDC 60505-6142-5 Carton of 25 vials NDC 0404-9833-99 1 vial in a bag (Vial bears NDC 60505-6142-0) 1 gram Manufactured by: Manufactured by: Qilu Pharmaceutical Co., Ltd.

High Tech Zone Jinan, 250101, China Manufactured for: Apotex Corp. Weston, Florida, USA 33326 Code number: 34040001011G Rev 12/22

📋 Description 70 words

Description Cefazolin for Injection, USP is a semi-synthetic cephalosporin for parenteral administration. It is the sodium salt of 3-{[(5-methyl-1,3,4-thiadiazol-2-yl)thio]-methyl}-8-oxo-7-[2-(1H-tetrazol-1-yl) acetamido]-5-thia-1-azabicyclo [4.2.0]oct-2-ene-2-carboxylic acid. Structural Formula: The sodium content is 48 mg (2 mEq sodium ion) per 1 gram of cefazolin.

Cefazolin for Injection, USP is a sterile white or off-white powder or crystalline powder containing Cefazolin Sodium USP supplied in vials equivalent to 1 gram or 2 grams of cefazolin. Formula1.jpg

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