VABOMERE

5 WARNINGS AND PRECAUTIONS Hypersensitivity reactions were reported with the use of VABOMERE. Serious and occasionally fatal hypersensitivity (anaphylactic) reactions have been reported in patients receiving beta-lactam antibacterial drugs. Discontinue infusion if signs of acute hypersensitivity occur. ( 5.1 ) Seizures and other adverse Central Nervous System experiences have been reported during treatment with meropenem, a component of VABOMERE. ( 5.2 ) Rhabdomyolysis: If signs or symptoms of rhabdomyolysis are observed, discontinue VABOMERE and initiate appropriate therapy. ( 5.3 ) Clostridioides difficile -associated diarrhea has been reported with nearly all systemic antibacterial agents, including VABOMERE. Evaluate patients if diarrhea occurs. ( 5.4 ) Co-administration of meropenem with valproic acid or divalproex sodium reduces the serum concentration of valproic acid potentially increasing the risk of breakthrough seizures. ( 5.5 , 7.1 ) 5.1 Hypersensitivity Reactions Hypersensitivity reactions were reported in patients treated with VABOMERE in the clinical trials [see Adverse Reactions (6.1) ] . Serious and occasionally fatal hypersensitivity (anaphylactic) reactions and serious skin reactions have been reported in patients receiving therapy with beta-lactam antibacterial drugs. 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 antibacterial drug. Before initiating therapy with VABOMERE, it is important to inquire about previous hypersensitivity reactions to penicillins, cephalosporins, other beta-lactam antibacterial drugs, and other allergens. If an allergic reaction to VABOMERE occurs, discontinue the drug immediately. 5.2 Seizure Potential Seizures and other adverse Central Nervous System (CNS) experiences have been reported during treatment with meropenem, which is a component of VABOMERE. 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 (7.1) ] . Close adherence to the recommended dosage regimens is urged, especially in patients with known factors that predispose to convulsive activity. Continue anti-convulsant therapy in patients with known seizure disorders. If focal tremors, myoclonus, or seizures occur, evaluate neurologically, place on anti-convulsant therapy if not already instituted, and reexamine the dosage of VABOMERE to determine whether it should be decreased or discontinued. 5.3 Rhabdomyolysis Rhabdomyolysis has been reported with the use of meropenem, a component of VABOMERE [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 VABOMERE and initiate appropriate therapy. 5.4 Clostridioides difficile -associated Diarrhea Clostridioides difficile -associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents, including VABOMERE, and may range in severity from mild diarrhea to fatal colitis. Treatment with antibacterial agents alters the normal flora of the colon leading to overgrowth of C. difficile . C. difficile produces toxins A and B which contribute to the development of CDAD. Hypertoxin-producing isolates of C. difficile cause increased morbidity and mortality, as these infections can be refractory to antimicrobial therapy and may require colectomy. CDAD must be considered in all patients who present with diarrhea following antibacterial drug use. Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents. If CDAD is suspected or confirmed, ongoing antibacterial drug use not directed against C. difficile may need to be discontinued. Appropriate fluid and electrolyte management, protein supplementation, antibacterial drug treatment of C. difficile , and surgical evaluation should be instituted as clinically indicated. 5.5 Risk of Breakthrough Seizures Due to Drug Interaction with Valproic Acid The concomitant use of VABOMERE and valproic acid or divalproex sodium is generally not recommended. 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. Increasing the dose of valproic acid or divalproex sodium may not be sufficient to overcome this interaction. Consider administration of antibacterial drugs other than carbapenems to treat infections in patients whose seizures are well controlled on valproic acid or divalproex sodium. If administration of VABOMERE is necessary, consider supplemental anticonvulsant therapy [see Drug Interactions (7.1) ] . 5.6 Thrombocytopenia In patients with renal impairment, thrombocytopenia has been observed in patients treated with meropenem, but no clinical bleeding has been reported [see Dosage and Administration (2.2) , Adverse Reactions (6.1) , Use in Specific Populations (8.5) and (8.6) , and Clinical Pharmacology (12.3) ] . 5.7 Potential for Neuromotor Impairment Alert patients receiving VABOMERE on an outpatient basis regarding adverse reactions 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 VABOMERE is well tolerated, advise patients not to operate machinery or motorized vehicles [see Adverse Reactions (6.1) ]. 5.8 Development of Drug-Resistant Bacteria Prescribing VABOMERE in the absence of a proven or strongly suspected bacterial infection is unlikely to provide benefit to the patient and increases the risk of drug-resistant bacteria [see Indications and Usage (1.2) ] . 5.9 Overgrowth of Non-susceptible Organisms As with other antibacterial drugs, prolonged use of VABOMERE may result in overgrowth of non-susceptible organisms. Repeated evaluation of the patient is essential. If superinfection does occur during therapy, appropriate measures should be taken.

6 ADVERSE REACTIONS The following adverse reactions are discussed in greater detail in the Warnings and Precautions section: Hypersensitivity Reactions [see Warnings and Precautions (5.1) ] Seizure Potential [see Warnings and Precautions (5.2) ] Rhabdomyolysis [see Warnings and Precautions (5.3) ] Clostridioides difficile -associated Diarrhea [see Warnings and Precautions (5.4) ] Risk of Breakthrough Seizures Due to Drug Interaction with Valproic Acid [see Warnings and Precautions (5.5) ] Thrombocytopenia [see Warnings and Precautions (5.6) ] Potential for Neuromotor Impairment [see Warnings and Precautions (5.7) ] Development of Drug-Resistant Bacteria [see Warnings and Precautions (5.8) ] Overgrowth of Non-susceptible Organisms [see Warnings and Precautions (5.9) ] The most frequently reported adverse reactions occurring in ≥3% of patients treated with VABOMERE were headache, phlebitis/infusion site reactions, and diarrhea. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Melinta Therapeutics at 1-844-633-6568 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. VABOMERE was evaluated in a Phase 3 comparator-controlled clinical trial in cUTI, including pyelonephritis, which included 272 patients treated with VABOMERE and 273 patients treated with the comparator piperacillin/tazobactam 4.5 grams (piperacillin 4 g/tazobactam 0.5 g) every 8 hours. After a minimum of 15 doses of IV therapy, patients could be switched to oral levofloxacin (500 mg daily every 24 hours) to complete the treatment course. Mean duration of IV therapy was 8 days in both treatment groups. Mean duration of IV and oral therapy was 10 days; patients with baseline bacteremia could receive up to 14 days of treatment. The mean age of patients treated with VABOMERE was 53 years (range 18 to 92 years), and 32% of patients were 65 years of age or older. Patients were predominantly female (66.5%) and White (93.4%). Most patients were enrolled in Europe (89.7%). Serious Adverse Reactions and Adverse Reactions Leading to Discontinuation Treatment was discontinued due to adverse reactions in 2.9% (8/272) of patients receiving VABOMERE and in 5.1% (14/273) of patients receiving piperacillin/tazobactam. Most common adverse reactions resulting in discontinuation of VABOMERE included hypersensitivity, 1.1% (3/272) and infusion-related reactions, 0.7% (2/272). Death occurred in 2 (0.7%) patients who received VABOMERE and in 2 (0.7%) patients who received piperacillin/tazobactam. Common Adverse Reactions The most frequently reported adverse reactions (3% or greater) in patients receiving VABOMERE in the Phase 3 cUTI trial were headache, phlebitis/infusion site reactions, and diarrhea. Table 3 provides adverse reactions occurring in 1% or greater of patients receiving VABOMERE in the Phase 3 cUTI trial. Table 3: Adverse Reactions Occurring in 1% or Greater of Patients Receiving VABOMERE in the Phase 3 Clinical Trial in cUTI Adverse Reactions VABOMERE (N=272) % Piperacillin/Tazobactam Piperacillin/tazobactam 4.5 grams (piperacillin 4 g/tazobactam 0.5 g) IV infused over 30 minutes every 8 hours. (N=273) % Headache 8.8 4.4 Phlebitis/Infusion site reactions Infusion site reactions include infusion/injection site phlebitis, infusion site thrombosis, and infusion site erythema. 4.4 0.7 Diarrhea 3.3 4.4 Hypersensitivity Hypersensitivity includes hypersensitivity, drug hypersensitivity, anaphylactic reaction, rash urticaria, and bronchospasm. 1.8 1.8 Nausea 1.8 1.5 Alanine aminotransferase increased 1.8 0.4 Aspartate aminotransferase increased 1.5 0.7 Pyrexia 1.5 0.7 Hypokalemia 1.1 1.5 Adverse Reactions Occurring in Less Than 1% of Patients Receiving VABOMERE in the Phase 3 cUTI trial : Blood and lymphatic system disorders : leukopenia General disorders and administration site conditions : chest discomfort Infections and infestations : pharyngitis, vulvovaginal candidiasis, oral candidiasis Investigations : creatinine phosphokinase increase Metabolism and nutrition disorders : decreased appetite, hyperkalemia, hyperglycemia, hypoglycemia Nervous system disorders : dizziness, tremor, paresthesia, lethargy Psychiatric disorders : hallucination, insomnia Renal and urinary disorders : azotemia, renal impairment Vascular disorders : deep vein thrombosis, hypotension, vascular pain Other Adverse Reactions Associated with Meropenem Additionally, adverse reactions reported with meropenem alone that were not reported in VABOMERE-treated patients in the Phase 3 clinical trial are listed below: Blood and lymphatic system disorders : thrombocytosis, neutropenia, eosinophilia, thrombocytopenia, agranulocytosis, hemolytic anemia Gastrointestinal disorders : abdominal pain Hepatobiliary disorders : jaundice Nervous system disorders : convulsions Investigations : blood alkaline phosphatase increased, blood lactate dehydrogenase increased, blood bilirubin increased, blood creatinine increased, blood urea increased, blood thromboplastin decreased, prothrombin time decreased, Direct and Indirect Coombs test positive Skin and subcutaneous tissue disorders : pruritus, toxic epidermal necrolysis, Stevens Johnson syndrome, Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) syndrome, erythema multiforme Immune system disorders : angioedema General disorders and administration site conditions : pain 6.2 Postmarketing Experience The following adverse reactions have been identified during post approval use of meropenem, a component of VABOMERE, or with VABOMERE. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Musculoskeletal Disorders : rhabdomyolysis Hepatobiliary Disorders : drug-induced liver injury (DILI), including hepatitis and liver failure

<table ID="table3" width="75%"><caption>Table 3: Adverse Reactions Occurring in 1% or Greater of Patients Receiving VABOMERE in the Phase 3 Clinical Trial in cUTI</caption><col width="33%" align="left" valign="top"/><col width="34%" align="center" valign="top"/><col width="33%" align="center" valign="top"/><thead><tr><th styleCode="Lrule Rrule">Adverse Reactions</th><th styleCode="Rrule">VABOMERE (N=272) %</th><th styleCode="Rrule">Piperacillin/Tazobactam<footnote ID="t3f1">Piperacillin/tazobactam 4.5 grams (piperacillin 4 g/tazobactam 0.5 g) IV infused over 30 minutes every 8 hours. </footnote> (N=273) %</th></tr></thead><tbody><tr styleCode="Botrule"><td styleCode="Lrule Rrule">Headache</td><td styleCode="Rrule">8.8</td><td styleCode="Rrule">4.4</td></tr><tr styleCode="Botrule"><td styleCode="Lrule Rrule">Phlebitis/Infusion site reactions<footnote ID="t3f2">Infusion site reactions include infusion/injection site phlebitis, infusion site thrombosis, and infusion site erythema.</footnote></td><td styleCode="Rrule">4.4</td><td styleCode="Rrule">0.7</td></tr><tr styleCode="Botrule"><td styleCode="Lrule Rrule">Diarrhea</td><td styleCode="Rrule">3.3</td><td styleCode="Rrule">4.4</td></tr><tr styleCode="Botrule"><td styleCode="Lrule Rrule">Hypersensitivity<footnote ID="t3f3">Hypersensitivity includes hypersensitivity, drug hypersensitivity, anaphylactic reaction, rash urticaria, and bronchospasm.</footnote></td><td styleCode="Rrule">1.8</td><td styleCode="Rrule">1.8</td></tr><tr styleCode="Botrule"><td styleCode="Lrule Rrule">Nausea</td><td styleCode="Rrule">1.8</td><td styleCode="Rrule">1.5</td></tr><tr styleCode="Botrule"><td styleCode="Lrule Rrule">Alanine aminotransferase increased</td><td styleCode="Rrule">1.8</td><td styleCode="Rrule">0.4</td></tr><tr styleCode="Botrule"><td styleCode="Lrule Rrule">Aspartate aminotransferase increased</td><td styleCode="Rrule">1.5</td><td styleCode="Rrule">0.7</td></tr><tr styleCode="Botrule"><td styleCode="Lrule Rrule">Pyrexia</td><td styleCode="Rrule">1.5</td><td styleCode="Rrule">0.7</td></tr><tr styleCode="Botrule"><td styleCode="Lrule Rrule">Hypokalemia</td><td styleCode="Rrule">1.1</td><td styleCode="Rrule">1.5</td></tr></tbody></table>