Meropenem and Sodium Chloride 500 mg/50mL Injection, Solution
🆔 Identity & classification
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🏷️ RxNorm drug class
This medicine belongs to the Penem Antibacterial class.
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- Meropenem is a very powerful antibiotic reserved for serious infections that simpler antibiotics can't reliably treat. It's used when bacteria are particularly hard to kill, or whe...
- Why am I being given meropenem instead of a regular antibiotic?
- Some people do experience side effects, most commonly diarrhea, nausea, headache, or a skin rash. These are usually manageable. You might also notice some redness or soreness at th...
- Will I feel any side effects from meropenem?
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🧪 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.
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💲 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 | $0.8140 | $976.80 / 1200 ml |
| Medicare drug plans payPart D · Q2 2026 | $3.77 | $4,519.20 / 1200 ml |
| Medicare Part B allowsASP · J2184 | $1.867 / J2184 unit | — |
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🔁 Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Meropenem 500 mg/20mL 00143-9430-10 | Hikma | 10 vials | — | AP | FDA listed | — |
| Meropenem and Sodium Chloride 500 mg/50mLthis 00264-3183-11 | B. | 50 ml | — | — | FDA listed | — |
| Meropenem 500 mg/10mL 00409-0222-10 | Hospira, | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/10mL 00409-1390-51 | Hospira, | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 00781-3000-95 | Sandoz | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 25021-0160-20 | Sagent | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg 44567-0145-10 | WG | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg 44567-0400-10 | WG | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 44647-0032-10 | Savior | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 51810-0502-02 | Qilu | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg 55150-0207-20 | Eugia | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/10mL 63323-0507-21 | Fresenius | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 68083-0146-10 | Gland | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 70121-1454-07 | Amneal | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg 70594-0075-02 | Xellia | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 72485-0411-01 | ARMAS | 1 vial | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 72572-0412-10 | Civica, | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 72572-0415-10 | Civica, | 10 vials | — | AP | FDA listed | — |
| Meropenem 500 mg/20mL 81962-0000-01 | BROOKS | 1 vial | — | AP | FDA listed | — |
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⏳ Availability & generic status
We did not find an FDA-approved generic match for this exact strength, form and route.
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🗺️ Medicaid utilization & spend
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Top reported reactions
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📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 00264-3183-11 You're viewing this | 24 CONTAINER in 1 CASE (0264-3183-11) / 50 mL in 1 CONTAINER | 2015-04-30 | Active |
🧭 About this NDC listing & data coverage
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 | — Not published for this NDC No photo available yet for this listing. |
| 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 | — Not published for this NDC Applies only to products approved under an NDA/ANDA; many listings are out of scope. |
| HCPCS J-code billing crosswalk | ✓ Available |
| Medicaid utilization (CMS SDUD) | ✓ Available |
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📄 Full prescribing information FDA SPL
🎯 Indications and Usage ▾
1 INDICATIONS AND USAGE Meropenem for Injection and Sodium Chloride Injection is a penem antibacterial indicated for the treatment of: Complicated skin and skin structure infections (adult patients and pediatric patients 3 months of age and older requiring the full adult dose only). ( 1.1 ) Complicated intra-abdominal infections (adult patients and pediatric patients 3 months of age and older requiring the full adult dose only). ( 1.2 ) Bacterial meningitis (pediatric patients 3 months of age and older requiring the full adult dose only).
( 1.3 ) To reduce the development of drug-resistant bacteria and maintain the effectiveness of Meropenem for Injection and Sodium Chloride Injection and other antibacterial drugs, Meropenem for Injection and Sodium Chloride Injection should only be used to treat or prevent infections that are proven or strongly suspected to be caused by bacteria.
1.1Complicated Skin and Skin Structure Infections (Adult Patients and Pediatric Patients 3 Months of age and older requiring the full adult dose only) Meropenem for Injection and Sodium Chloride Injection is indicated for the treatment of complicated skin and skin structure infections (cSSSI) due to Staphylococcus aureus (methicillin-susceptible isolates only), Streptococcus pyogenes, Streptococcus agalactiae , viridans group streptococci, Enterococcus faecalis (vancomycin-susceptible isolates only), Pseudomonas aeruginosa, Escherichia coli, Proteus mirabilis, Bacteroides fragilis, and Peptostreptococcus species.
1.2Complicated Intra-abdominal Infections (Adult Patients and Pediatric Patients 3 Months of age and older requiring the full adult dose only) Meropenem for Injection and Sodium Chloride Injection is indicated for the treatment of complicated appendicitis and peritonitis caused by viridans group streptococci, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Bacteroides fragilis, B. thetaiotaomicron, and Peptostreptococcus species.
1.3Bacterial Meningitis (Pediatric Patients 3 Months of age and older requiring the full adult dose only) Meropenem for Injection and Sodium Chloride Injection is indicated for the treatment of bacterial meningitis caused by Haemophilus influenzae, Neisseria meningitidis and penicillin-susceptible isolates of Streptococcus pneumoniae . Meropenem has been found to be effective in eliminating concurrent bacteremia in association with bacterial meningitis. For information regarding use in pediatric patients (3 months of age and older) [see Indications and Usage ( 1.1 ), ( 1.2 ) or ( 1.3 ); Dosage and Administration ( 2.3 ), and Adverse Reactions ( 6.1 )].
1.4Usage To reduce the development of drug-resistant bacteria and maintain the effectiveness of Meropenem for Injection and Sodium Chloride Injection and other antibacterial drugs, Meropenem for Injection and Sodium Chloride Injection should only be used 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 ▾
2 DOSAGE AND ADMINISTRATION Use this formulation of meropenem only in patients who require the entire 500 mg or 1 gram dose and not any fraction thereof. ( 2.1 ) 500 mg every 8 hours by intravenous infusion over 15 to 30 minutes for complicated skin and skin structure infections (cSSSI) for adult patients. When treating infections caused by Pseudomonas aeruginosa , a dose of 1 gram every 8 hours is recommended ( 2.1 ).
1 gram every 8 hours by intravenous infusion over 15 to 30 minutes for intra-abdominal infections for adult patients. ( 2.1 ) Dosage should be reduced in adult patients with renal impairment. If less than a full dose (1 gram or 500 mg) is required, an alternative formulation should be used to avoid risk of overdose.
( 2.2 ) Recommended Meropenem for Injection Dosage Schedule for Adult Patients with Renal Impairment Creatinine Clearance (mL/min) Dose (dependent on type of infection) Dosing Interval greater than 50 Recommended dose (500 mg cSSSI and 1 gram Intra-abdominal infection) Every 8 hours 26-50 Recommended dose Every 12 hours 10-25 One-half recommended dose Every 12 hours less than 10 One-half recommended dose Every 24 hours Meropenem for Injection and Sodium Chloride Injection in the DUPLEX® Container is designed to deliver a 500 mg or 1 gram dose of Meropenem.
To prevent unintentional overdose, this product should not be used in pediatric patients who require less than the full adult dose of Meropenem. Meropenem is not to be used in pediatric patients aged less than three months. There is no experience in pediatric patients with renal impairment.
Pediatric patients 3 months of age and older. ( 2.3 ) Recommended Meropenem for Injection Dosage Schedule for Pediatric Patients with Normal Renal Function Type of Infection Dose (mg/kg) Up to a Maximum Dose Dosing Interval Complicated skin and skin structure 20 mg/kg (or 1 gram for pediatric patients weighing over 50 kg) every 8 hours is recommended when treating complicated skin and skin structure infections caused by P. aeruginosa (2.3). 10 500 mg Every 8 hours Intra-abdominal 20 1 gram Every 8 hours Meningitis 40 2 grams Every 8 hours - Intravenous infusion is to be given over approximately 15 to 30 minutes. - There is no experience in pediatric patients with renal impairment.
2.1Adult Patients Meropenem for Injection and Sodium Chloride Injection in the DUPLEX® Container should be used only in patients who require the entire 500 mg or 1 gram dose and not any fraction thereof. The recommended dose of Meropenem for Injection and Sodium Chloride Injection is 500 mg given every 8 hours for skin and skin structure infections and 1 gram given every 8 hours for intra-abdominal infections. When treating complicated skin and skin structure infections caused by P. aeruginosa , a dose of 1 gram every 8 hours is recommended.
Meropenem for Injection and Sodium Chloride Injection should be administered by intravenous infusion over approximately 15 to 30 minutes.
2.2Use in Adult Patients with Renal Impairment Dosage should be reduced in patients with creatinine clearance of 50 mL/min or less. (See dosing table below.) Dosage should be reduced in renal failure if less than a full dose (1 gram or 500 mg) is required and an alternative formulation should be used to avoid risk of overdose. When only serum creatinine is available, the following formula (Cockcroft and Gault equation) 1 may be used to estimate creatinine clearance.
Males: Creatinine Clearance (mL/min) = Weight (kg) x (140 - age) 72 x serum creatinine (mg/dL) Females: 0.85 x above value Table 1: Recommended Meropenem for Injection Dosage Schedule for Adult Patients With Renal Impairment Creatinine Clearance (mL/min) Dose (dependent on type of infection) Dosing Interval greater than 50 Recommended dose (500 mg cSSSI and 1 gram Intra-abdominal infection) Every 8 hours 26-50 Recommended dose Every 12 hours 10-25 One-half recommended dose Every 12 hours less than 10 One-half recommended dose Every 24 hours There is…
💊 Dosage Forms and Strengths ▾
3 DOSAGE FORMS AND STRENGTHS Single-dose DUPLEX ® (Dual-chamber) container: 500 mg meropenem for injection USP (as a blend of sterile meropenem trihydrate USP and sterile sodium carbonate USP/NF) and 50 mL of sodium chloride injection USP 1 gram meropenem for injection USP (as a blend of sterile meropenem trihydrate USP and sterile sodium carbonate USP/NF) and 50 mL of sodium chloride injection USP Single-dose DUPLEX ® Container consisting of: 500 mg Meropenem for Injection and 50 mL Sodium Chloride Injection 0.9% ( 3 ) 1 gram Meropenem for Injection and 50 mL Sodium Chloride Injection 0.9% ( 3 )
⛔ Contraindications ▾
4 CONTRAINDICATIONS Meropenem for Injection and Sodium Chloride Injection is contraindicated in patients with known hypersensitivity to any component of this product or to other drugs in the same class or in patients who have demonstrated anaphylactic reactions to beta-lactams. Known hypersensitivity to product components or anaphylactic reactions to beta-lactams. ( 4 ) Contraindicated where the administration of sodium or chloride could be clinically detrimental.
( 4 )
⚠️ Warnings and Cautions ▾
5 WARNINGS AND PRECAUTIONS Serious and occasionally fatal hypersensitivity (anaphylactic) reactions have been reported in patients receiving beta-lactams. ( 5.1 ) Severe cutaneous adverse reactions have been reported in patients receiving meropenem intravenous. Discontinue meropenem immediately if patients experience these signs and symptoms and consider alternative treatment.
( 5.2 ) Rhabdomyolysis: If signs or symptoms of rhabdomyolysis are observed, discontinue Meropenem for Injection and Sodium Chloride Injection and initiate appropriate therapy. ( 5.3 ) Seizures and other adverse CNS experiences have been reported during treatment. ( 5.4 ) Co-administration of Meropenem for Injection with valproic acid or divalproex sodium reduces the serum concentration of valproic acid potentially increasing the risk of breakthrough seizures.
( 5.5 , 7.2 ) Clostridioides difficile- associated diarrhea (ranging from mild diarrhea to fatal colitis) has been reported. Evaluate if diarrhea occurs. ( 5.6 ) In patients with renal dysfunction, thrombocytopenia has been observed.
( 5.9 ) Solutions containing sodium ions should be used with great care, if at all, in patients where the administration of sodium could be detrimental. ( 5.11 )
5.1Hypersensitivity Reactions Serious and occasionally fatal hypersensitivity (anaphylactic) reactions have been reported in patients receiving therapy with beta-lactams. These reactions are more likely to occur in individuals with a history of sensitivity to multiple allergens. There have been reports of individuals with a history of penicillin hypersensitivity who have experienced severe hypersensitivity reactions when treated with another beta-lactam.
Before initiating therapy with Meropenem for Injection and Sodium Chloride Injection, it is important to inquire about previous hypersensitivity reactions to penicillins, cephalosporins, other beta-lactams, and other allergens. If an allergic reaction to Meropenem for Injection and Sodium Chloride Injection occurs, discontinue the drug immediately.
5.2Severe Cutaneous Adverse Reactions Severe cutaneous adverse reactions (SCAR) such as Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), drug reaction with eosinophilia and systemic symptoms (DRESS), erythema multiforme (EM) and acute generalized exanthematous pustulosis (AGEP) have been reported in patients receiving meropenem [see Adverse Reactions (6.2) ] . If signs and symptoms suggestive of these reactions appear, Meropenem for Injection and Sodium Chloride Injection should be withdrawn immediately and an alternative treatment should be considered.
5.3Rhabdomyolysis Rhabdomyolysis has been reported with the use of meropenem [see Adverse Reactions (6.2)] . If signs or symptoms of rhabdomyolysis such as muscle pain, tenderness or weakness, dark urine, or elevated creatine phosphokinase are observed, discontinue Meropenem for Injection and Sodium Chloride Injection and initiate appropriate therapy.
5.4Seizure Potential Seizures and other adverse CNS experiences have been reported during treatment with meropenem for injection. These experiences have occurred most commonly in patients with CNS disorders (e.g., brain lesions or history of seizures) or with bacterial meningitis and/or compromised renal function [see Adverse Reactions (6.1) and Drug Interactions (7.2) ]. During clinical investigations, 2904 immunocompetent adult patients were treated for non-CNS infections with the overall seizure rate being 0.7% (based on 20 patients with this adverse event).
All meropenem-treated patients with seizures had pre-existing contributing factors. Among these are included prior history of seizures or CNS abnormality and concomitant medications with seizure potential. Dosage adjustment is recommended in patients with advanced age and/or adult patients with creatinine clearance of 50 mL/min or less [see Dosage and Administration (2.2) ].
Close adherence to the recommended dosage regimens is urged, especia…
🤒 Adverse Reactions ▾
6 ADVERSE REACTIONS The following are discussed in greater detail in other sections of labeling: Hypersensitivity Reactions [see Warnings and Precautions (5.1) ] Severe Cutaneous Adverse Reactions [see Warnings and Precautions (5.2)] Rhabdomyolysis [see Warnings and Precautions (5.3) ] Seizure Potential [see Warnings and Precautions (5.4) ] Risk of Breakthrough Seizures Due to Drug Interaction with Valproic Acid [see Warnings and Precautions (5.5) ] Clostridioides difficile – Associated Diarrhea [see Warnings and Precautions (5.6) ] Development of Drug-Resistant Bacteria [see Warnings and Precautions (5.7) ] Overgrowth of Nonsusceptible Organisms [see Warnings and Precautions (5.8) ] Thrombocytopenia [see Warnings and Precautions (5.9) ] Potential for Neuromotor Impairment [see Warnings and Precautions (5.10) ] High Sodium Load [see Warnings and Precautions (5.11) ] Most common adverse reactions (greater than or equal to 2%) are: headache, nausea, constipation, diarrhea, anemia, vomiting, and rash ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact B.
Braun Medical Inc. at 1-800-854-6851 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .
6.1Adverse Reactions from Clinical Trials Because clinical trials are conducted under widely varying conditions, adverse reactions 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. Adult Patients: During clinical investigations, 2904 immunocompetent adult patients were treated for non-CNS infections with meropenem for injection (500 mg or 1000 mg every 8 hours). Deaths in 5 patients were assessed as possibly related to meropenem; 36 (1.2%) patients had meropenem discontinued because of adverse events.
Many patients in these trials were severely ill and had multiple background diseases, physiological impairments and were receiving multiple other drug therapies. In the seriously ill patient population, it was not possible to determine the relationship between observed adverse events and therapy with meropenem for injection. The following adverse reaction frequencies were derived from the clinical trials in the 2904 patients treated with meropenem for injection.
Local Adverse Reactions Local adverse reactions that were reported with meropenem for injection were as follows: Inflammation at the injection site 2.4% Injection site reaction 0.9% Phlebitis/thrombophlebitis 0.8% Pain at the injection site 0.4% Edema at the injection site 0.2% Systemic Adverse Reactions Systemic adverse events that were reported with meropenem for injection occurring in greater than 1.0% of the patients were diarrhea (4.8%), nausea/vomiting (3.6%), headache (2.3%), rash (1.9%), sepsis (1.6%), constipation (1.4%), apnea (1.3%), shock (1.2%), and pruritus (1.2%).
Additional systemic adverse reactions that were reported with meropenem for injection and occurring in less than or equal to 1.0% but greater than 0.1% of the patients are listed below within each body system in order of decreasing frequency: Bleeding events were seen as follows: gastrointestinal hemorrhage (0.5%), melena (0.3%), epistaxis (0.2%), hemoperitoneum (0.2%). Body as a Whole: pain, abdominal pain, chest pain, fever, back pain, abdominal enlargement, chills, pelvic pain Cardiovascular: heart failure, heart arrest, tachycardia, hypertension, myocardial infarction, pulmonary embolus, bradycardia, hypotension, syncope Digestive System: oral moniliasis, anorexia, cholestatic jaundice/jaundice, flatulence, ileus, hepatic failure, dyspepsia, intestinal obstruction Hemic/Lymphatic: anemia, hypochromic anemia, hypervolemia Metabolic/Nutritional: peripheral edema, hypoxia Nervous System: insomnia, agitation, delirium, confusion, dizziness, seizure, nervousness, paresthesia, hallucinations, somnolence, anxiety, depression, asthenia [see Warnings and Precautions (5.4) and (5.10) ] Respiratory: respiratory disorder, dyspnea, pleural effus…
🔄 Drug Interactions ▾
7 DRUG INTERACTIONS Co-administration of Meropenem for Injection with probenecid inhibits renal excretion of meropenem and is therefore not recommended. ( 7.1 ) The concomitant use of Meropenem and valproic acid or divalproex sodium is generally not recommended. Antibacterial drugs other than carbapenems should be considered to treat infections in patients whose seizures are well controlled on valproic acid or divalproex sodium. ( 5.5 , 7.2 )
7.1Probenecid Probenecid competes with meropenem for active tubular secretion, resulting in increased plasma concentrations of meropenem. Coadministration of probenecid with meropenem is not recommended.
7.2Valproic Acid Case reports in the literature have shown that co-administration of carbapenems, including meropenem, to patients receiving valproic acid or divalproex sodium results in a reduction in valproic acid concentrations. The valproic acid concentrations may drop below the therapeutic range as a result of this interaction, therefore increasing the risk of breakthrough seizures. Although the mechanism of this interaction is unknown, data from in vitro and animal studies suggest that carbapenems may inhibit the hydrolysis of valproic acid’s glucuronide metabolite (VPA-g) back to valproic acid, thus decreasing the serum concentrations of valproic acid.
If administration of meropenem for injection is necessary, then supplemental anti-convulsant therapy should be considered [see Warnings and Precautions (5.5) ].
👥 Use in Specific Populations ▾
8 USE IN SPECIFIC POPULATIONS Pediatric use: Meropenem for Injection and Sodium Chloride Injection should not be used in pediatric patients who require less than the full adult dose of meropenem. ( 8.4 ) Renal Impairment: Dose adjustment is necessary, if creatinine clearance is 50 mL/min or less. ( 2.2 , 8.6 )
8.1Pregnancy Risk Summary There are insufficient human data to establish whether there is a drug-associated risk of major birth defects or miscarriages with meropenem in pregnant women. No fetal toxicity or malformations were observed in pregnant rats and cynomolgus macaques administered intravenous meropenem during organogenesis at doses up to 3.2 and 2.3 times the maximum recommended human dose based on body surface area comparison, respectively. In rats administered intravenous meropenem in late pregnancy and during the lactation period, there were no adverse effects on offspring at doses equivalent to approximately 3.2 times the maximum recommended human dose based on body surface area comparison [see Data] .
The 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 2-4% and 15-20%, respectively. Data Animal Data Reproductive studies have been performed with meropenem in rats at doses of up to 1000 mg/kg/day and in cynomolgus monkeys at doses of up to 360 mg/kg/day (on the basis of body surface area comparisons, approximately 3.2 times and 2.3 times higher, respectively, than the maximum recommended human dose of 1 gram every 8 hours).
These studies revealed no evidence of harm to the fetus due to meropenem, although there were slight changes in fetal body weight at doses of 250 mg/kg/day (equivalent to approximately 0.8 times the maximum recommended human dose of 1 gram every 8 hours based on body surface area comparison) and above in rats. In a published study 2 , meropenem administered to pregnant rats from Gestation Day 6 to Gestation Day 17, was associated with mild maternal weight loss at all doses, but did not produce malformations or fetal toxicity.
The no-observed-adverse-effect-level (NOAEL) for fetal toxicity in this study was considered to be the high dose of 750 mg/kg/day (equivalent to approximately 2.4 times the highest recommended human dose based on body surface area comparison). In a peri-postnatal study in rats described in the published literature 1 , intravenous meropenem was administered to dams from Gestation Day 17 until Postpartum Day 21. There were no adverse effects in the dams and no adverse effects in the first generation offspring (including developmental, behavioral, and functional assessments and reproductive parameters) except that female offspring exhibited lowered body weights which continued during gestation and nursing of the second generation offspring.
Second generation offspring showed no meropenem-related effects. The NOAEL value was considered to be 1000 mg/kg/day (approximately 3.2 times the highest recommended clinical dose based on body surface area comparisons).
8.2Lactation Risk Summary Meropenem has been reported to be excreted in human milk. No information is available on the effects of meropenem on the breastfed –child or on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for Meropenem for Injection and Sodium Chloride Injection in the DUPLEX® Container and any potential adverse effects on the breastfed-child from Meropenem for Injection and Sodium Chloride Injection in the DUPLEX® Container or from the underlying maternal conditions.
8.4Pediatric Use Meropenem for Injection and Sodium Chloride Injection in the DUPLEX® Container is designed to deliver a 500 mg or 1 gram dose of meropenem. To prevent unintentional overdose, this product should not be used in pediatric patients who require less than the fu…
🤰 Pregnancy ▾
8.1Pregnancy Risk Summary There are insufficient human data to establish whether there is a drug-associated risk of major birth defects or miscarriages with meropenem in pregnant women. No fetal toxicity or malformations were observed in pregnant rats and cynomolgus macaques administered intravenous meropenem during organogenesis at doses up to 3.2 and 2.3 times the maximum recommended human dose based on body surface area comparison, respectively. In rats administered intravenous meropenem in late pregnancy and during the lactation period, there were no adverse effects on offspring at doses equivalent to approximately 3.2 times the maximum recommended human dose based on body surface area comparison [see Data] .
The 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 2-4% and 15-20%, respectively. Data Animal Data Reproductive studies have been performed with meropenem in rats at doses of up to 1000 mg/kg/day and in cynomolgus monkeys at doses of up to 360 mg/kg/day (on the basis of body surface area comparisons, approximately 3.2 times and 2.3 times higher, respectively, than the maximum recommended human dose of 1 gram every 8 hours).
These studies revealed no evidence of harm to the fetus due to meropenem, although there were slight changes in fetal body weight at doses of 250 mg/kg/day (equivalent to approximately 0.8 times the maximum recommended human dose of 1 gram every 8 hours based on body surface area comparison) and above in rats. In a published study 2 , meropenem administered to pregnant rats from Gestation Day 6 to Gestation Day 17, was associated with mild maternal weight loss at all doses, but did not produce malformations or fetal toxicity.
The no-observed-adverse-effect-level (NOAEL) for fetal toxicity in this study was considered to be the high dose of 750 mg/kg/day (equivalent to approximately 2.4 times the highest recommended human dose based on body surface area comparison). In a peri-postnatal study in rats described in the published literature 1 , intravenous meropenem was administered to dams from Gestation Day 17 until Postpartum Day 21. There were no adverse effects in the dams and no adverse effects in the first generation offspring (including developmental, behavioral, and functional assessments and reproductive parameters) except that female offspring exhibited lowered body weights which continued during gestation and nursing of the second generation offspring.
Second generation offspring showed no meropenem-related effects. The NOAEL value was considered to be 1000 mg/kg/day (approximately 3.2 times the highest recommended clinical dose based on body surface area comparisons).
🧒 Pediatric Use ▾
8.4Pediatric Use Meropenem for Injection and Sodium Chloride Injection in the DUPLEX® Container is designed to deliver a 500 mg or 1 gram dose of meropenem. To prevent unintentional overdose, this product should not be used in pediatric patients who require less than the full adult dose of meropenem. Meropenem is not to be used in pediatric patients aged less than three months. [see Dosage and Administration (2.3) ].
Use of meropenem for injection in pediatric patients with bacterial meningitis is supported by evidence from adequate and well-controlled studies in the pediatric population. Use of meropenem for injection in pediatric patients with intra-abdominal infections is supported by evidence from adequate and well-controlled studies with adults with additional data from pediatric pharmacokinetics studies and controlled clinical trials in pediatric patients. Use of meropenem for injection in pediatric patients with complicated skin and skin structure infections is supported by evidence from an adequate and well-controlled study with adults and additional data from pediatric pharmacokinetics studies [see Indications and Usage (1) , Dosage and Administration (2.3) , Adverse Reactions (6.1) , Clinical Pharmacology (12.3) and Clinical Studies (14) ].
🧓 Geriatric Use ▾
8.5Geriatric Use Of the total number of subjects in clinical studies of meropenem for injection, approximately 1100 (30%) were 65 years of age and older, while 400 (11%) were 75 years and older. Additionally, in a study of 511 patients with complicated skin and skin structure infections, 93 (18%) were 65 years of age and older, while 38 (7%) were 75 years and older. No overall differences in safety or effectiveness were observed between these subjects and younger subjects; spontaneous reports and other reported clinical experience have not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out.
Meropenem is known to be substantially excreted by the kidney, and the risk of adverse reactions to this drug may be greater in patients with renal impairment. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function. A pharmacokinetic study with meropenem for injection in elderly patients has shown a reduction in the plasma clearance of meropenem that correlates with age-associated reduction in creatinine clearance [see Clinical Pharmacology (12.3) ].
Each 500 mg of Meropenem for Injection and Sodium Chloride Injection delivers 245.1 mg (10.7 mEq) of sodium and each 1 gram of Meropenem for Injection and Sodium Chloride Injection delivers 290.2 mg (12.6 mEq) of sodium. At the usual recommended doses of 500 mg or 1000 mg every 8 hours, patients would receive between 735 mg/day and 870 mg/day (32 mEq and 38 mEq) of sodium. The geriatric population may respond with a blunted natriuresis to salt loading.
This may be clinically important with regard to such diseases as congestive heart failure [see C ontraindications (4) and Warnings and Precautions (5.11) ].
🆘 Overdosage ▾
10 OVERDOSAGE In mice and rats, large intravenous doses of meropenem (2200-4000 mg/kg) have been associated with ataxia, dyspnea, convulsions, and mortalities. Intentional overdosing of Meropenem for Injection and Sodium Chloride Injection is unlikely, although accidental overdosing might occur if large doses are given to patients with reduced renal function. The largest dose of meropenem administered in clinical trials has been 2 grams given intravenously every 8 hours.
At this dosage, no adverse pharmacological effects or increased safety risks have been observed. Limited post-marketing experience indicates that if adverse events occur following overdosage, they are consistent with the adverse event profile described in the Adverse Reactions section and are generally mild in severity and resolve on withdrawal or dose reduction. Symptomatic treatments should be considered.
In individuals with normal renal function, rapid renal elimination takes place. Meropenem and its metabolite are readily dialyzable and effectively removed by hemodialysis; however, no information is available on the use of hemodialysis to treat overdosage.
🧬 Clinical Pharmacology ▾
12 CLINICAL PHARMACOLOGY
12.1Mechanism of Action Meropenem is an antibacterial drug [see Microbiology (12.4) ].
12.2Pharmacodynamics The percentage of time of a dosing interval that unbound plasma concentration of meropenem exceeds the meropenem minimum inhibitory concentration (MIC) against the infecting organism has been shown to best correlate with efficacy in animal and in vitro models of infection.
12.3Pharmacokinetics Plasma Concentrations At the end of a 30-minute intravenous infusion of a single dose of meropenem for injection in healthy volunteers, mean peak plasma concentrations of meropenem are approximately 23 mcg/mL (range 14-26) for the 500 mg dose and 49 mcg/mL (range 39-58) for the 1 gram dose. A 5-minute intravenous bolus injection of meropenem in healthy volunteers results in mean peak plasma concentrations of approximately 45 mcg/mL (range 18-65) for the 500 mg dose and 112 mcg/mL (range 83-140) for the 1 gram dose.
Following intravenous doses of 500 mg, mean plasma concentrations of meropenem usually decline to approximately 1 mcg/mL at 6 hours after administration. No accumulation of meropenem in plasma was observed with regimens using 500 mg administered every 8 hours or 1 gram administered every 6 hours in healthy volunteers with normal renal function. Distribution The plasma protein binding of meropenem is approximately 2%.
After a single intravenous dose of meropenem for injection, the highest mean concentrations of meropenem were found in tissues and fluids at 1 hour (0.5 to 1.5 hours) after the start of infusion, except where indicated in the tissues and fluids listed in table 3 below. Table 3: Meropenem Concentrations in Selected Tissues (Highest Concentrations Reported) Tissue Intravenous Dose (gram) Number of Samples Mean [mcg/mL or mcg/(g)] at 1 hour unless otherwise noted Range [mcg/mL or mcg/(g)] Endometrium 0.5 7 4.2 1.7–10.2 Myometrium 0.5 15 3.8 0.4–8.1 Ovary 0.5 8 2.8 0.8–4.8 Cervix 0.5 2 7 5.4–8.5 Fallopian tube 0.5 9 1.7 0.3-3.4 Skin 0.5 22 3.3 0.5–12.6 Interstitial fluid obtained from blister fluid 0.5 9 5.5 3.2-8.6 Skin 1 10 5.3 1.3–16.7 Interstitial fluid 1 5 26.3 20.9–37.4 Colon 1 2 2.6 2.5–2.7 Bile 1 7 14.6 (3 hours) 4.0–25.7 Gall bladder 1 1 —
3.9Peritoneal fluid 1 9 30.2 7.4–54.6 Lung 1 2 4.8 (2 hours) 1.4–8.2 Bronchial mucosa 1 7 4.5 1.3–11.1 Muscle 1 2 6.1 (2 hours) 5.3–6.9 Fascia 1 9 8.8 1.5–20 Heart valves 1 7 9.7 6.4–12.1 Myocardium 1 10 15.5 5.2–25.5 CSF (inflamed) 20 mg/kg in pediatric patients of age 5 months to 8 years 8 1.1 (2 hours) 0.2-2.8 40 mg/kg in pediatric patients of age 1 month to 15 years 5 3.3 (3 hours) 0.9-6.5 CSF (uninflamed) 1 4 0.2 (2 hours) 0.1–0.3 Elimination In subjects with normal renal function, the elimination half-life of meropenem is approximately 1 hour.
Metabolism There is one metabolite of meropenem that is microbiologically inactive. Excretion Meropenem is primarily excreted unchanged by the kidneys. Approximately 70% (50 – 75%) of the dose is excreted unchanged within 12 hours.
A further 28% is recovered as the microbiologically inactive metabolite. Fecal elimination represents only approximately 2% of the dose. The measured renal clearance and the effect of probenecid show that meropenem undergoes both filtration and tubular secretion.
Urinary concentrations of meropenem in excess of 10 mcg/mL are maintained for up to 5 hours after a 500 mg dose. Specific Populations Patients with Renal Impairment Pharmacokinetic studies with meropenem for injection in patients with renal impairment have shown that the plasma clearance of meropenem correlates with creatinine clearance. Dosage adjustments are necessary in subjects with renal impairment (creatinine clearance 50 mL/min or less) [see Dosage and Administration (2.2 ) and Use In Specific Populations (8.6) ].
Meropenem is hemodialyzable. However, there is no information on the usefulness of hemodialysis to treat overdosage [see Overdosage (10) ]. Patients with Hepatic Impairment A pharmacokinetic…
🧬 Mechanism of Action ▾
12.1Mechanism of Action Meropenem is an antibacterial drug [see Microbiology (12.4) ].
📦 How Supplied / Storage and Handling ▾
16 HOW SUPPLIED/STORAGE AND HANDLING Meropenem for Injection USP and Sodium Chloride Injection USP in the DUPLEX® Container is a flexible dual chamber single-dose container supplied in two concentrations. The diluent chamber contains approximately 50 mL of 0.9% Sodium Chloride Injection USP. After reconstitution, the delivered doses are equivalent to 500 Anhydrous basis. mg and 1 gram meropenem.
Meropenem for Injection USP and Sodium Chloride Injection USP is supplied sterile and nonpyrogenic in the DUPLEX ® Container packaged 24 units per case. NDC REF Dose Volume 0264-3183-11 3183-11 500 mg 50 mL 0264-3185-11 3185-11 1 gram 50 mL Store the unactivated unit at 20°C–25°C (68°F–77°F). Excursion permitted to 15°C-30°C. [See USP Controlled Room Temperature.] Protect from freezing.
Use only if prepared solution is clear and free from particulate matter.
📋 Description ▾
11 DESCRIPTION Meropenem for injection is a sterile, pyrogen-free, synthetic, carbapenem antibacterial drug for intravenous administration. Meropenem is (4 R ,5 S ,6 S )-3- [[(3 S ,5 S )-5-(Dimethylcarbamoyl)-3-pyrrolidinyl]thio]-6-[(1 R )-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid trihydrate. Its empirical formula is C 17 H 25 N 3 O 5 S•3H 2 O with a molecular weight of 437.52.
Its structural formula is: Meropenem for injection is a white to pale yellow crystalline powder containing meropenem trihydrate and sodium carbonate. The constituted solution varies from colorless to yellow depending on the concentration. The pH of freshly constituted solutions is between 7.3 and 8.3.
Meropenem is soluble in 5% monobasic potassium phosphate solution, sparingly soluble in water, very slightly soluble in hydrated ethanol, and practically insoluble in acetone or ether. Meropenem for Injection USP and Sodium Chloride Injection USP is supplied as a sterile, nonpyrogenic, single-dose packaged combination of meropenem (drug chamber) and 50 mL of sodium chloride (diluent) in the DUPLEX ® sterile container. When reconstituted as instructed, each 1 gram Meropenem for injection in the DUPLEX ® Container will deliver 1 gram of meropenem and a total sodium content of 290.2 mg (12.6 mEq).
Each 500 mg Meropenem for injection in the DUPLEX ® Container will deliver 500 mg of meropenem and a total sodium content of 245.1 mg (10.7 mEq) [see Dosage and Administration (2.4) ]. The osmolality of the reconstituted solution of Meropenem for Injection USP and Sodium Chloride Injection USP is approximately 356 mOsmol/kg for the 500 mg dose and approximately 417 mOsmol/kg for the 1 gram dose. The DUPLEX ® Container is a flexible dual chamber container.
After removing the peelable foil strip, activating the seals, and thoroughly mixing, the reconstituted drug product is hyperosmotic and is intended for single intravenous use. The product (diluent and drug) contact layer is a mixture of thermoplastic rubber and a polypropylene ethylene copolymer that contains no plasticizers. Not made with natural rubber latex, PVC or Di(2-ethylhexyl)phthalate (DEHP). structural formula
💬 Information for Patients ▾
17 PATIENT COUNSELING INFORMATION Patients should be counseled that antibacterial drugs including Meropenem for Injection and Sodium Chloride Injection should only be used to treat bacterial infections. They do not treat viral infections (e.g., the common cold). When Meropenem for Injection and Sodium Chloride Injection is prescribed to treat a bacterial infection, patients should be told that although it is common to feel better early in the course of therapy, the medication should be taken exactly as directed.
Skipping doses or not completing the full course of therapy may (1) decrease the effectiveness of the immediate treatment and (2) increase the likelihood that bacteria will develop resistance and will not be treatable by Meropenem for Injection and Sodium Chloride Injection or other antibacterial drugs in the future. Counsel patients that diarrhea is a common problem caused by antibacterial drugs which usually ends when the antibacterial drug is discontinued. Sometimes after starting treatment with antibacterial drugs, patients can develop watery and bloody stools (with or without stomach cramps and fever) even as late as two or more months after having taken the last dose of the antibacterial drug.
If this occurs, patients should contact their physician as soon as possible [see Warnings and Precautions (5.6) ]. Counsel patients to inform their physician if they are taking valproic acid or divalproex sodium. Valproic acid concentrations in the blood may drop below the therapeutic range upon co-administration with Meropenem for Injection and Sodium Chloride Injection.
If treatment with Meropenem for Injection and Sodium Chloride Injection is necessary and continued, alternative or supplemental anti-convulsant medication to prevent and/or treat seizures may be needed [see Warnings and Precautions (5.5) ]. Patients receiving Meropenem for Injection and Sodium Chloride Injection on an outpatient basis must be alerted of adverse events such as seizures, delirium, headaches and/or paresthesias that could interfere with mental alertness and/or cause motor impairment. Until it is reasonably well established that Meropenem for Injection and Sodium Chloride Injection is well tolerated, patients should not operate machinery or motorized vehicles [see Warnings and Precautions (5.10) ].
Meropenem for Injection and Sodium Chloride Injection contains a high sodium load. Instruct patients to inform or report symptoms of difficulty breathing, swelling, or increased weight [see Warnings and Precautions (5.11) ].