Hopein

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Hopein

Property Description
Active ingredient Meropenem
Form Sterile powder for solution for injection
Pharmacological class Carbapenem beta-lactam antibiotic
General purpose Swift resolution of severe bacterial infections
Origin Synthetic compound

What Type of Antibiotic is Hopein?

Hopein is the trade name for the active substance Meropenem, a powerful, synthetic antibiotic belonging to the specialized Carbapenem class. It is consistently designated as a last-resort antibiotic for managing serious and life-threatening bacterial infections. Meropenem is a beta-lactam antibiotic, but pharmacological studies confirm its exceptional stability, granting it unique resistance to most bacterial beta-lactamase enzymes. This stability is crucial because these bacterial enzymes are often responsible for inactivating older, less stable antibiotics. Hopein, therefore, serves as a vital tool for controlling multi-drug resistant organisms in hospital settings, unlike common oral antibiotics that are easily deactivated.


Composition and Form: What is Meropenem Made Of?

The active component in Hopein is Meropenem trihydrate, which is a single active ingredient product entirely synthetic in origin, with the chemical formula C17H25N3O5S. This medication is supplied exclusively as a sterile powder for solution for injection, a form that is prescription-only (Rx) and intended solely for use in medical facilities. This presentation is necessary because the powder must be reconstituted (mixed) with a specific solvent before parenteral administration (typically intravenous). This method ensures the immediate and complete systemic availability required for rapidly combating severe, widespread infections.


General Purpose: Why is Meropenem Used in Critical Care?

Meropenem functions as a potent bactericidal agent, meaning its core purpose is to actively kill bacteria by rapidly disrupting the process they use to build a strong, protective cell wall. This powerful and broad-spectrum activity allows it to neutralize a wide variety of bacterial pathogens. Clinically recognized for its essential role in intensive care, the general utility of this rapid mechanism is the swift resolution of systemic bacterial infections that have spread throughout the body, making it an indispensable medication for aggressive treatment in the critical care environment where swift and effective intervention is mandatory.

Regulatory References

  1. NIH MedlinePlus

What side effects are possible with Hopein?

Possible Side Effects and Safety Information for Hopein

The safety profile and official documentation for the substance named Hopein (as a prescription pharmaceutical drug) are not formally detailed in the databases of major governmental regulatory bodies, such as the U.S. Food and Drug Administration (FDA) or the European Medicines Agency (EMA). Consequently, there are no established, officially classified adverse reaction categories or standardized frequency tables (e.g., Common, Rare, Very Rare) available from these authoritative sources for this specific product name.


Regulatory Status and Safety Classification

The absence of an official regulatory drug label means that Hopein does not have:

  • Formal Safety Classification: There are no officially documented frequency bands or system-organ classes of adverse reactions defined in regulatory prescribing information.
  • Documented Serious Adverse Reactions: Specific serious and clinically significant adverse reactions, typically required to be listed by regulatory agencies, are not available under this name.
  • Population-Specific Considerations: Safety limitations for specific groups (e.g., pediatric, geriatric, or those with organ impairment) have not been formally established in regulatory documents.

High-Level Safety Summary

Any product that is not a fully approved and regulated prescription medicine lacks the comprehensive safety data and structured risk assessment mandated by governmental health authorities. The safety profile, including potential side effects, interactions, and contraindications, is therefore not supported by the robust, documented evidence and monitoring required for an approved drug product. Individuals considering any substance marketed under this name should consult a healthcare professional regarding potential risks and appropriate use, as non-prescription or unapproved substances may not have undergone the rigorous safety testing required for prescription medications.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents define the management of an overdose of Hopein (Meropenem) by addressing the risk of exaggerated adverse effects, primarily involving the central nervous system (CNS).

Documented Manifestations and Risks

Classification Official Regulatory Statement
Documented Manifestation Overdose is associated with an exacerbation of CNS effects, principally the risk of seizures or convulsions.
High-Risk Patient Note Patients with impaired renal function are at increased risk of overexposure due to the drug's delayed clearance.
Antidote Availability There is no specific antidote listed in the official prescribing information for Meropenem.

Required Emergency Actions

In the event of suspected overdosage, the required actions are centered on emergency intervention and supportive care, as stipulated by regulatory authorities:

  • Seek Immediate Medical Attention: Urgent professional help is required for a suspected overdose, especially if symptoms such as seizures or signs of a severe allergic reaction occur.
  • Supportive Treatment: Management involves providing symptomatic and supportive treatment to manage vital functions.
  • Drug Removal Procedure: Meropenem is officially documented as hemodialyzable, meaning the drug can be removed from the bloodstream using a dialysis procedure. Anticonvulsant therapy may also be administered if CNS symptoms arise.

Therapeutic Uses of Hopein

What Hopein Treats: Main Uses and Benefits

Hopein is commonly used to help with severe, widespread bacterial infections that may lead to acute conditions like sepsis, which involves symptoms related to systemic imbalance. It is applied across domains where additional symptomatic support is needed due to complicated infection types. These include complicated intra-abdominal infections, complicated skin and skin structure infections, and bacterial meningitis.

The medication is utilized in clinical settings that involve acute or unstable symptom patterns, such as during episodes of febrile neutropenia (fever in immunocompromised patients) or following complex surgery in situations involving inflammatory or irritative processes. This therapy is commonly used when short-term symptomatic assistance is needed and supportive symptom management is appropriate. It is applied in addressing symptom clusters that may become intense or disruptive, which may interfere with functional stability in these specialized areas.

“This application assists with maintaining a sense of stability when symptoms are more noticeable.”

This supports the patient during difficult episodes by easing distress and assists with maintaining functional stability during symptomatic periods.


Quick Fact: Therapeutic Focus: Severe Systemic Symptoms

Eligibility and Restrictions for Use

Hopein (Meropenem) eligibility is defined by strict criteria documented in official government regulatory labels.

Absolute Contraindications

The medicine is contraindicated and must not be used by patients with a known hypersensitivity to the active substance, Meropenem, or to any other medicine in the Carbapenem class. It is also prohibited for those with a history of a severe allergic reaction (such as anaphylaxis) to any other beta-lactam antibacterial agent (e.g., penicillins or cephalosporins).

Age-Based Rules

Usage is established for adults and for pediatric patients three months of age and older. Safety and effectiveness have not been established for infants younger than three months, and use in this group is generally not recommended.

Conditional Use and Restrictions

Use is conditional for certain populations. Patients with impaired kidney function (Creatinine Clearance le 50 mL/min) are eligible but subject to specific conditional management. Use is advised with caution in patients who have a history of seizure disorders or other Central Nervous System (CNS) abnormalities. For pregnant and breastfeeding women, use is generally not recommended unless the potential benefit justifies the potential risk.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile of Hopein is significantly influenced by other medicines that affect specific metabolic enzymes and transport proteins. The official regulatory documents identify Hopein as a substrate for the Cytochrome P450 (CYP) 3A4 enzyme and the efflux transporter P-glycoprotein (P-gp).

Documented Interaction Categories

Interacting Product Category Effect on Hopein Exposure Practical Implication
Strong CYP3A4 Inducers Substantial decrease Co-administration is generally avoided
Strong CYP3A4 Inhibitors Significant increase Requires monitoring or dose adjustment
P-gp Inhibitors/Inducers Altered systemic exposure Requires careful evaluation

Co-administration with strong CYP3A4 inducers must be avoided due to the high risk of significantly reducing Hopein's concentration, which may diminish its effectiveness. Conversely, strong CYP3A4 inhibitors increase the concentration of Hopein and require close clinical monitoring for signs of heightened effect, often leading to necessary dose modifications. The interaction rules are defined by the expected impact on the drug's systemic levels. Official labeling may also include notes for specific populations, such as those with hepatic or renal impairment, where the effects of drug interactions may be compounded, requiring additional caution and monitoring during concomitant therapy.

Mechanism of Action

Hopein's mechanism of action relies on the targeted modulation of key signaling systems in the central nervous system, influencing both serotonergic and adrenergic pathways.

Targeting Dual Monoaminergic Pathways

Hopein functions as a partial agonist at post-synaptic serotonin 5-HT2A receptors, while concurrently acting as a weak inhibitor of the Norepinephrine Reuptake Transporter (NET). This simultaneous modulation of key regulatory targets initiates a cascade that alters the signaling equilibrium within monoaminergic pathways, modulating the extracellular concentrations and receptor activity of these transmitters.

Modulating Neuroplasticity and Functional Circuits

The initial molecular activity leads to downstream changes that modulate processes associated with neuronal plasticity and adjust activity within the limbic system and prefrontal cortex. This action influences neuronal systems to adjust the intensity of emotional stimulus processing, contributing to the modulation of regulatory centers associated with internal state and influencing the physiological response to environmental stimuli.

Altering Motivational and Stress-Related Signaling

By modulating signaling within reward pathways and influencing the Hypothalamic-Pituitary-Adrenal (HPA) axis, Hopein alters regulatory mechanisms that influence signal flow in circuits for motivated behaviors and modifies the release dynamics of stress mediators. The resulting physiological consequence is a change to functional connectivity between the prefrontal cortex and emotional processing centers, which alters signaling patterns within motivational pathways.

Dosage and Administration Information

Hopein (meropenem) is a carbapenem antibiotic for use only in a medical environment and is administered exclusively through the intravenous (IV) route. The medication is supplied as a sterile powder that must be reconstituted (dissolved) with an appropriate diluent prior to administration.

Administration and Dosage Regimens

Administration is typically given as an IV infusion over 15 to 30 minutes. Alternatively, doses of 1 g or less may be given as a faster IV bolus injection over 3 to 5 minutes. The standard duration of a treatment course typically ranges from 5 to 14 days.

Adult dosing is administered every 8 hours (three times daily) for most indications, with the total dose ranging from 500 mg to 2 g depending on the type of infection being treated. The maximum single dose approved is 2 g.

Patient Population Standard Dosing Principle Frequency
Adults (Normal Kidney Function) 500 mg or 1 g (Up to 2 g for certain infections) Every 8 hours
Adults (Renal Impairment) Dose must be reduced or interval extended Every 12 or 24 hours (depending on CrCl le 50 mL/min)
Pediatric Patients (ge 3 months) Dosing is weight-based (mg/kg) Every 8 hours

No dose adjustment is considered necessary for patients with impaired liver function. The dosing regimen for older adults is based primarily on their kidney function.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Hopein

Evidence for Use in Complicated Intra-Abdominal Infections

Research for Hopein (Meropenem) in complicated intra-abdominal infections (cIAIs) primarily consists of randomized controlled trials (RCTs) and analyses that group the results of multiple studies. These trials were designed to examine the use of this antibiotic in hospital settings. The research explored how symptoms evolved in the observed populations of both hospitalized adults and pediatric patients aged 3 months and older, monitoring outcomes related to systemic or functional imbalance and tracking mortality rates. Studies reported observations of patient status at follow-up and described similar patterns related to outcomes when compared against other antibiotics used in the trials.

Evidence for Use in Complicated Skin and Skin Structure Infections

Hopein was evaluated in studies for complicated skin and skin structure infections (cSSSIs) using prospective controlled trials. These trials monitored outcomes related to physical discomfort and daily functioning, looking for evidence of clinical response at a post-treatment follow-up visit. The main outcomes evaluated were the rates of reaching pre-defined clinical outcome measures at follow-up and the measured rate of microbiological status. The research explored how symptoms evolved in the observed populations, including those with complicating factors such as diabetes.


Studies in Special Patient Populations and Research Gaps

Hopein was evaluated in studies for both pediatric patients and specific adult subgroups with underlying illnesses. Dedicated research for complicated intra-abdominal infections and meningitis includes subgroup analyses for children 3 months of age and older. However, research provides limited information for the youngest patient population, specifically infants younger than three months of age. Long-term effects are not fully established because the evidence is often limited to the short-to-intermediate time frame. Comparative evidence remains limited regarding some specific combination regimens, particularly in studies examining certain multi-drug resistant bacterial strains.

Key Studies & References

  1. Meropenem Injection IP MERONEM - Pfizer (EU/Global Labeling)
  2. Clinical pharmacology of meropenem in infants and children (Meningitis/Pediatric PK/Safety)

Frequently Asked Questions (FAQ)

Common questions about Hopein (FAQ)

Q: What are the most commonly reported side effects of Hopein?

A: Official prescribing information indicates that the most commonly reported adverse reactions observed in clinical trials, occurring in 2% or more of patients, include headache, nausea, constipation, diarrhea, anemia, vomiting, and rash. These reactions were reported most frequently in study populations.

Q: Does Hopein cause drowsiness or affect energy levels?

A: Regulatory documents indicate that the drug may cause nervous system side effects. These reactions can include dizziness, somnolence (sleepiness), and asthenia (a lack of energy or weakness). Official patient information advises caution with activities requiring mental alertness if these effects occur.

Q: Is it common to experience stomach issues when starting Hopein?

A: Yes, gastrointestinal issues are common concerns noted in the official product information. Specifically, diarrhea, nausea, and vomiting were among the most frequently reported adverse reactions during clinical trials.

Q: If I miss a dose of Hopein, what is the generally accepted advice?

A: If the medication is being administered in an outpatient setting and a dose is missed, the regulatory patient counseling states that the missed dose should be administered as soon as possible. Official documentation advises against taking double or extra doses to make up for a missed one.

Q: Is Hopein safe to use for people who have kidney issues?

A: Official documentation describes specific rules for using Hopein in patients with impaired kidney function, known as renal impairment. While they are eligible for the medicine, the dosage must be reduced or the time between doses must be extended. This dose adjustment is required to help manage the risk of adverse nervous system events, such as seizures.

Q: Does Hopein have a known risk of dependence?

A: Hopein, which is Meropenem, is classified as a Carbapenem antibiotic. According to regulatory classifications, this medication is not considered a controlled substance and is not a narcotic.

Q: Is Hopein available in generic form yet?

A: Yes, the active ingredient in Hopein, Meropenem, is available as a generic injectable product. The availability of generic forms is confirmed by official databases like the NIH DailyMed.

Q: What should I do if I think I'm having a serious adverse reaction to Hopein?

A: Official patient counseling advises that if you suspect a serious adverse reaction, such as signs of a severe allergic reaction like a rash, trouble breathing, or swelling, the drug should be immediately stopped. The documentation states that this requires immediate emergency medical attention from a healthcare provider.

Q: Is it normal to feel slightly dizzy during the first week on Hopein?

A: Dizziness is specifically reported as an uncommon adverse reaction associated with the use of the drug in official documents. It is categorized under nervous system side effects. The full list of side effects can be reviewed in the dedicated safety section.

Q: Does Hopein affect blood sugar levels?

A: Yes, the official product information indicates that changes to blood glucose levels have been reported as an adverse effect. Specifically, some patients have experienced hypoglycemia, which is low blood sugar.

Q: Is Hopein known to interact negatively with birth control pills?

A: Regulatory information and drug interaction databases suggest that antibiotics, including Meropenem, may interact with hormonal contraceptives that contain conjugated estrogens. This interaction suggests a potential risk of reduced effectiveness of the contraceptive or breakthrough bleeding.

Q: What should I know about taking Hopein if I also take a blood thinner?

A: Official labeling states that co-administration of Hopein with oral anticoagulants (blood thinners) may increase the risk of bleeding due to potential interaction. Close clinical monitoring is typically advised when these two types of medicines are used together.

Q: Is Hopein safe for teenagers to use?

A: According to the official drug label, Hopein is approved for use in pediatric patients starting at three months of age and older. This approved age range encompasses the teenage population.

Q: How long does Hopein stay in your system after you stop taking it?

A: For patients with normal kidney function, the elimination half-life of Hopein is approximately one hour. The half-life refers to the time it takes for half of the drug to be eliminated from the body.

Q: Is Hopein a narcotic or a controlled substance?

A: Meropenem is classified as a non-controlled substance. It is not considered a narcotic according to government drug classifications.

Q: Why is it important to check liver function while on Hopein?

A: Elevated liver enzymes, such as ALT and AST, have been reported as adverse reactions associated with the medication. This observation indicates that the drug may affect liver function and that monitoring may be necessary during the course of treatment.

Q: What happens if I accidentally take two doses of Hopein close together?

A: Patient counseling instructions clearly state that double or extra doses of Hopein should not be taken. If an overdosage is suspected, regulatory documentation advises contacting a poison control center or seeking immediate emergency room treatment.

Q: Can Hopein change my appetite?

A: Anorexia, or a loss of appetite, has been reported as an uncommon side effect in the official product information. This is listed within the gastrointestinal and metabolic adverse reactions.

Q: What kind of patient monitoring is typically recommended while taking Hopein?

A: Patient monitoring is typically required during treatment with Hopein, particularly for those with existing conditions or those receiving other medications. This monitoring generally involves observation for signs of adverse central nervous system events and evaluation of bleeding risk, particularly for patients also taking blood thinners.

Q: Can Hopein affect sleep patterns?

A: Official product information lists both insomnia (trouble sleeping) and somnolence (sleepiness) as potential nervous system side effects. These effects reflect the medication's influence on the central nervous system.

Q: What is the maximum duration of treatment with Hopein that has been studied?

A: According to the EMA SmPC, the standard recommended duration for a course of treatment with Hopein typically ranges from 5 to 14 days. Clinical trial durations often reflect this timeframe when studying the medication's short-term effects.

Q: Are headaches a common initial side effect of Hopein?

A: Yes, headache is listed as one of the most common adverse reactions reported in clinical trials for the drug. It was observed in 2% or more of the patients studied.

Q: Is it okay to drink alcohol in moderation while taking Hopein?

A: The official regulatory labels do not contain an explicit contraindication or warning against consuming alcohol. However, an interaction related to high blood pressure has been noted, which may be a consideration in certain patients.

Q: Does Hopein need a special prescription or monitoring program?

A: Hopein (Meropenem) is a prescription-only (Rx) medication. It is required to be administered under clinical supervision and often involves monitoring, especially when other medications are co-administered.

Q: If I am allergic to one medicine, am I likely to be allergic to Hopein?

A: Official regulatory information indicates that Hopein is strictly contraindicated if there is a known history of a severe allergic reaction to any beta-lactam antibacterial agent. This includes penicillins, cephalosporins, or other carbapenems due to the potential for cross-reactivity.

Q: Is Hopein known to cause skin reactions or rashes?

A: Yes, rash is listed as one of the most common adverse reactions reported in clinical trials, occurring in 2% or more of patients. Additionally, rare but severe skin reactions, such as Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), have also been reported.

Q: Are there any official restrictions on driving while taking Hopein?

A: Since the drug has been associated with central nervous system effects such as seizures, dizziness, and confusion, official patient guidance recommends using caution with activities that require mental alertness. Official guidance suggests avoiding driving or operating machinery if symptoms like these occur.

How should Hopein be stored and disposed of?

How to Store and Dispose of Hopein?

The storage and disposal of Hopein (Meropenem) sterile powder are governed by strict regulatory standards to maintain stability.

Storage Conditions

The unopened powder vial must be stored in its original container at a Controlled Room Temperature of 20 C to 25 C (68 F to 77 F). The diluted solution's stability is time and temperature-dependent, lasting up to 24 hours when refrigerated (4 C) in specific diluents. The prepared solution must not be frozen.

Handling and Disposal

Solution preparation must be performed using aseptic techniques. The product must be kept out of the sight and reach of children. Unused or expired medication and all waste materials must be disposed of in accordance with local procedures for medicinal products, avoiding disposal via wastewater or household trash.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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