Taro

Quick links to important sections

Medically reviewed

Marina Burgos

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 Taro

Property Description
Active Ingredients Piperacillin and Tazobactam
Form Sterile Powder for Solution for Injection
Pharmacological Class Penicillin-Class Antibacterial and β-Lactamase Inhibitor Combination
General Purpose Treatment of severe Bacterial Infections
Origin Semisynthetic

What Type of Medicine is Taro and How is it Given?

Taro is a specialized semisynthetic antibiotic medication and a combination product used to combat severe bacterial infections. Pharmacologically, it is classified as a penicillin-class antibacterial paired with a β-lactamase inhibitor. The drug entity combines the active ingredients Piperacillin and Tazobactam Sodium Salt and is typically administered only as a sterile powder for solution for injection. This formulation signals its use for systemic therapy, as it must be reconstituted with a diluent and delivered intravenously (parenterally) to achieve the necessary high concentrations in the bloodstream swiftly.


What is Taro Made Of? The Dual Active Ingredients and Their Purpose

The functional core of Taro is its dual component system: Piperacillin provides the core antibacterial action, and Tazobactam provides protection against bacterial resistance. Piperacillin, an extended-spectrum penicillin, exerts a bactericidal effect by inhibiting bacterial cell wall synthesis. The inclusion of Tazobactam is critical because it extends the antibiotic's effectiveness against bacteria that produce resistance enzymes. The inclusion of Tazobactam, a β-lactamase inhibitor, ensures the medication's power against many drug-resistant bacteria.


What is the General Benefit of This Combination Antibiotic?

The combination of the two active ingredients provides a robust, broad-spectrum capability essential for fighting a wide variety of susceptible organisms. This strategy ensures that the drug can effectively eliminate serious, complex, and polymicrobial infections that require a high probability of successfully targeting multiple potential pathogens. The effectiveness of this combination is crucial for managing serious infections where resistance to older antibiotics is suspected. This formulation serves as a critical, systemic therapeutic tool when powerful antibacterial intervention is required.

What side effects are possible with Taro?

Possible side effects and safety information

The safety profile of Piperacillin/Tazobactam (Taro) is structured by official frequency classifications and System-Organ Class (SOC) groupings, as documented by regulatory bodies such as the FDA and EMA. Adverse reactions are formally categorized to reflect their expected incidence and the physiological system they may affect.

Frequency-Classified Adverse Reactions

Adverse effects are documented in official labeling with specific frequency classifications:

  • Very Common: Diarrhoea, Nausea, Vomiting.
  • Common: Candidiasis (superinfection), Headache, Insomnia, Rash, Pruritus, Anemia, Thrombocytopenia, and elevated liver enzyme levels (AST/ALT).
  • Uncommon: Hypersensitivity reactions, Hypokalaemia (low potassium), Convulsion, Urticaria, Jaundice, and Renal failure.

Clinically Significant Safety Considerations

Regulatory documents highlight specific serious adverse reactions (SARs) that require attention. These include Anaphylactic Shock and other severe hypersensitivity events, Severe Cutaneous Adverse Reactions (SCARs) such as Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), and severe Clostridium difficile-associated diarrhoea (CDAD).

Specific safety statements exist for defined populations. Patients with renal impairment require careful monitoring and possible dose adjustment, as they may have an increased risk of dose-related adverse effects, including central nervous system events. The medication is strictly contraindicated in individuals with a history of severe allergic reaction to penicillin antibiotics or other beta-lactam agents.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information emphasizes that an overdose of acetaminophen (the active ingredient in Taro) carries a significant risk of severe hepatic injury (liver damage), which can progress to liver failure and death.

Documented Overdose Presentations

Symptoms in the first 24 hours may be non-specific, including nausea, vomiting, pallor, anorexia, and abdominal pain. Some individuals may initially be asymptomatic. Despite a lack of early symptoms, the liver damage may already be progressing. Subsequent manifestations of severe poisoning, appearing 12 to 48 hours or later after ingestion, include jaundice (yellowing of the skin/eyes), confusion, metabolic acidosis, and may culminate in hepatic encephalopathy.

Required Emergency Action

Immediate medical advice must be sought in the event of an overdose, even if the person feels well. The absence of severe initial symptoms does not rule out the risk of delayed, serious, and potentially irreversible liver damage. Because treatment with the antidote N-acetylcysteine is most effective when administered quickly, all patients suspected of an overdose must be referred to a hospital urgently for immediate medical attention and management according to established guidelines. The hazard of overdose is greater in those with underlying liver conditions or chronic malnutrition.

Therapeutic Uses of Taro

Taro (Piperacillin/Tazobactam) is a combination antibiotic therapy generally used for managing severe, complicated bacterial infections. Its use is generally relevant in clinical settings marked by heightened systemic burden. This is relevant in conditions characterized by periods of heightened symptoms related to major organ systems. The therapeutic use for this combination is associated with managing infections such as severe pneumonia, complicated intra-abdominal infections, and complex skin and soft tissue infections.

“The medication is generally applied in scenarios involving broad-spectrum management due to the complexity of the infection or suspected bacterial resistance.”

It is considered relevant in settings marked by temporary physiological imbalance, such as treating febrile neutropenia and managing signs of sepsis, which contributes to easing the overall symptom load. This approach may assist with managing complex, often polymicrobial infections, offering symptomatic relief that helps patients cope more steadily with difficult episodes.


Quick Fact: Relief for Systemic Imbalance Taro is often applied in situations involving symptoms related to systemic imbalance caused by bacterial invasion, such as persistent high fever and chills, assisting with maintaining functional stability.

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Taro (Piperacillin/Tazobactam) — Official Regulatory Information

Eligibility scope

Category Official Regulatory Statement
Populations for whom use is allowed (as stated in label): Adults and adolescents 12 years and older; pediatric patients 2 months to less than 12 years for specific approved infections.
Populations for whom use is not recommended (if applicable): Pregnant and breastfeeding individuals, unless the expected benefit outweighs the potential risk.
Populations for whom use is contraindicated: Patients with a history of hypersensitivity (allergic reaction) to piperacillin, tazobactam, or any other beta-lactam antibacterial agent (e.g., penicillins, cephalosporins).
Age-related eligibility rules: Safety and efficacy have not been established in infants younger than two months of age; older adults may require dosage adjustments due to diminished renal function.
Condition-specific eligibility rules: Patients with renal impairment (Creatinine clearance leq 40 mL/min) require dose reduction; adjustment is not typically required for hepatic cirrhosis.
Pregnancy and lactation eligibility status (if explicitly documented): Not recommended unless benefit outweighs risk; the drug components cross the placenta, and piperacillin is excreted in human milk.
Eligibility-related restrictions: Caution is advised for patients with pre-existing seizure disorders or cystic fibrosis.

Eligibility classifications (high-level)

Classification Details (as defined in official documents)
Eligibility severity classification (as defined in official documents): Contraindicated (Absolute Prohibition); Use Not Established (Safety/Efficacy Data Absent); Conditional Use (Requires dose modification or caution).
Regulatory basis (EMA / FDA / etc.): U.S. Food and Drug Administration (FDA) and European Medicines Agency (EMA) Summary of Product Characteristics (SmPC).
Eligibility-context constraints (as defined in official documents): Eligibility is constrained by a history of specific immunological reactions (Hypersensitivity) and the status of renal function (Organ Clearance).

Resulting eligibility structure

Official eligibility statements:

  • Use of Taro is absolutely prohibited (contraindicated) in patients with a history of allergic reaction to piperacillin, tazobactam, or any beta-lactam antibiotic.
  • The safety and efficacy have not been established in infants under two months of age, officially restricting use in this population.
  • Eligibility is conditional on renal function status; patients with creatinine clearance leq 40 mL/min require the intravenous dose to be adjusted.
  • Use during pregnancy and breastfeeding is generally not recommended unless the potential therapeutic benefit is deemed to outweigh the possible risk.

Connection to the overall eligibility profile (2–4 sentences): Regulatory documents establish non-eligibility based on a primary absolute contraindication related to immunological history (allergy to beta-lactams) and conditional eligibility based on physiological function (renal impairment) or developmental stage (age lt 2 months). This structure confines administration to populations with established safety profiles or where risk can be managed through mandated dose modification.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile for Taro (Piperacillin/Tazobactam) is defined by pharmacokinetic changes and pharmacodynamic effects, strictly as described in government regulatory documents.

Pharmacokinetic and Exposure-Altering Interactions

Co-administration with Probenecid is associated with reduced renal clearance of both Piperacillin and Tazobactam, which prolongs their half-lives and increases systemic exposure. Taro may also reduce the excretion of Methotrexate, leading to elevated serum levels. In specific populations, such as hemodialysis patients, Taro can significantly reduce the concentration of co-administered Tobramycin, requiring specific drug monitoring.

Pharmacodynamic Effects and Restrictions

Non-depolarizing muscle relaxants (e.g., Vecuronium) may experience prolonged neuromuscular blockade when co-administered. The combination with Vancomycin has been linked to an increased incidence of acute kidney injury, particularly in critically ill patients, necessitating close monitoring of renal function. When used with anticoagulants, monitoring of coagulation parameters is required due to potential platelet function effects.

Administration and Compatibility Rules

Aminoglycosides (e.g., Gentamicin) must be reconstituted and administered separately from Taro to prevent in vitro chemical inactivation. The concurrent use of Taro may also decrease the effectiveness of hormonal contraceptives.

Mechanism of Action

Receptor- and Enzyme-Mediated Signaling

This mechanistic domain involves the drug acting as an agonist or antagonist at specific cellular receptors, or as an inhibitor of key metabolic enzymes. Modifying these initial molecular steps directly impacts downstream signaling pathways, affecting the activity of overactive or dysregulated cellular processes.


Modulation of Pathway Cascades

The drug is designed to initiate or suppress specific signaling sequences that lead to broad systemic physiological outcomes. By engaging mechanisms that influence feedback regulation within targeted pathways, it can modify mediator activity and influencing the establishment of a modified physiological state.


Targeting Key Inflammatory and Proliferative Systems

Taro engages mechanisms relevant in systems where excessive inflammation or cellular proliferation is present. This action contributes to modifying the magnitude of overactive physiological responses by decreasing the concentration and activity of excessive mediators, resulting in physiological adjustments that characterize the drug's mechanistic action.

Dosage and Administration Information

How to use Taro

The administration of Taro (piperacillin and tazobactam) follows a fixed-interval protocol, focusing on the route, frequency, and mandatory adjustments required for use.


Administration Scope

Instruction Entity Administration Guideline
Route of administration Administered strictly via Intravenous (IV) Infusion.
Dosing schedule The usual adult total daily dosage is 13.5 g (3.375 g every six hours), which may increase to 18.0 g (4.5 g every six hours) for severe infections like nosocomial pneumonia.
Timing in relation to meals (if applicable) Not applicable; administration is strictly parenteral.
Preparation requirements (if applicable) The sterile powder for injection must be reconstituted with a compatible diluent and then further diluted to the appropriate volume for infusion.
Age-group administration rules Dose adjustment is mandatory for adult patients with impaired kidney function (CrCl ≤ 40 mL/min) and is based on the degree of renal impairment. Pediatric dosing is calculated based on body weight (mg/kg).
Missed-dose rules Not specified in high-level administrative instructions.
Special procedural conditions The total dose must be delivered over a period of 30 minutes via intravenous infusion. The drug should generally be administered separately from aminoglycosides.

Instruction Classifications (High-Level)

Classification Description
Administration method type Intravenous
Frequency pattern Fixed-interval (Every 6 hours or Every 8 hours)
Basis of Use Standard clinical framework
Use-context constraints Requires controlled clinical setting due to IV administration and complex preparation.

Resulting Procedural Structure

Step sequence:

  • Reconstitution: The powder is mixed with a specified diluent.
  • Dilution: The reconstituted solution is further diluted to the final volume.
  • Infusion: The final mixture is administered via intravenous infusion over 30 minutes.
  • Course Duration: The course typically lasts 7 to 10 days.

Connection to the overall use protocol: Taro is used according to a procedural protocol requiring specific reconstitution and dilution of the powder prior to administration. The standard adult regimen is fixed to a frequency of every six hours in many regions, while also requiring mandatory dosage modification based on kidney function. This structure defines the precise conditions and fixed-interval dosing necessary for the product's intended use.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Taro (Piperacillin/Tazobactam)

Taro is a combination antibiotic that was evaluated in clinical research, primarily focusing on its role in research exploring severe infections caused by susceptible bacteria. The evidence landscape consists mainly of Randomized Controlled Trials (RCTs), where the medicine is compared against other standard broad-spectrum antibiotics, and Systematic Reviews that combine the results of multiple trials.


Evidence for Key Indications

Complicated Intra-abdominal Infections (cIAI)

The research exploring the use of Taro for complicated infections within the abdomen largely involves short-term comparative RCTs. Studies assessed clinical endpoints (resolution of infection signs) and microbiological endpoints (clearance of bacteria). Researchers also monitored systemic endpoints like all-cause mortality during the initial phase of care. Research describes patterns related to short-term clinical and microbiological endpoints in the observed populations.

Severe Respiratory and Systemic Infections

Research has also examined the use of Taro in severe lung infections acquired in the hospital setting, and in situations of severe physiological strain.

Nosocomial Pneumonia

Evidence includes comparative RCTs and supporting Pharmacokinetic/Pharmacodynamic (PK/PD) studies. Trials monitored clinical outcomes and systemic endpoints like mortality. Studies reported varying patterns when examining different dosing strategies, and certainty remains low regarding a superior mortality outcome across all patient groups.

Febrile Neutropenia

Taro was studied for use as a cornerstone empirical therapy in patients with fever and low white blood cell counts. RCTs compared it to other initial antibiotic regimens, examining time to fever resolution and overall treatment success. Findings describe group patterns where the combination appeared to be associated with abatement of fever in studies that monitored this outcome.

Complicated Skin and Soft Tissue Infections (cSSSI)

The combination antibiotic was studied in trials for complicated skin and soft tissue infections, primarily in adults. Research describes the measured clinical and microbiological endpoints over defined intervals. These findings apply only to the populations studied.


Limitations, Special Populations, and Follow-up

Studies explored measured outcomes in pediatric patients and the critically ill population. Follow-up durations were limited, typically short-term, meaning long-term data are not available for durability of response or functional status. Furthermore, evidence is continuously subject to evolving bacterial resistance patterns, requiring ongoing study to remain relevant.

Key Studies & References

  1. Label: PIPERACILLIN AND TAZOBACTAM injection, powder, for solution (DailyMed, NIH/NLM)
  2. Piperacillin and Tazobactam Injection: MedlinePlus Drug Information (NIH/NLM)
  3. Ertapenem versus piperacillin/tazobactam for the treatment of complicated infections: a meta-analysis of randomized controlled trials (NCBI/NLM)

Frequently Asked Questions (FAQ)

Common questions about Taro (FAQ)


Q: Is Taro considered a preventative medication or a treatment?

A: According to official regulatory documents, Taro is defined as an antibacterial combination product used for the treatment of existing bacterial infections. It is not classified as a medicine for preventing infection.

Q: How quickly does Taro start to work after taking the first dose?

A: The drug is given by intravenous (IV) infusion, a route intended to deliver high concentrations of the active ingredients immediately into the bloodstream. Official documents indicate that the medicine's active components are eliminated from the body relatively quickly, within approximately one to two hours after administration.

Q: How long do the effects of Taro typically last?

A: Because the drug's components are eliminated from the body quickly, its therapeutic effects are time-dependent. Official schedules require the medicine to be given at fixed intervals, such as every six or eight hours, to sustain the necessary concentration in the body to fight the infection.

Q: What should I do if I miss a dose of Taro?

A: Official guidance for patients using this medicine at home recommends that if a dose is missed, it should be administered as soon as possible, but if it is almost time for the next scheduled dose, only that next dose should be given. Official warnings state that double or extra doses should not be administered.

Q: Is it okay to take Taro with food or does it need to be taken on an empty stomach?

A: Taro is supplied as a sterile powder that must be mixed and given by intravenous (IV) infusion into a vein, and it is not a pill or liquid taken by mouth. Therefore, official use instructions do not address taking it with or without food.

Q: Is Taro safe to take for a long period of time?

A: Official documents describe the usual duration of therapy for approved uses as typically lasting 7 to 14 days. They also note that long-term data are not available, which means the medication is generally used for defined, acute periods.

Q: Can I take an over-the-counter pain reliever like ibuprofen or acetaminophen with Taro?

A: The official product label does not specifically name all over-the-counter pain relievers. However, some authoritative regulatory sources report potential interactions with aspirin and aspirin-like medications.

Q: Is Taro linked to any risks for kidney or liver function?

A: Official regulatory documents report adverse reactions related to both the liver and kidneys, including elevated liver enzyme levels, jaundice, and instances of renal failure. Patients with existing kidney impairment are flagged as requiring mandatory dosage adjustment and close monitoring.

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

A: Official guidance states that double or extra doses should not be taken, as exceeding the recommended amount may increase the risk of known side effects. This can include central nervous system events such as seizures (convulsions).

Q: How is Taro's effectiveness measured in clinical research?

A: The effectiveness of the drug in clinical research is measured by two main categories of outcomes. These include clinical endpoints, which track the visible resolution of infection signs, and microbiological endpoints, which confirm the clearance of susceptible bacteria from the infected area.

Q: Can Taro affect a person's mood or cause emotional changes?

A: Adverse reaction lists from regulatory bodies include effects on the central nervous system (CNS) such as insomnia and convulsions (seizures). Other rare CNS side effects that have been reported include a feeling of constant spinning or movement and severe sleepiness.

Q: Do any official warnings exist about stopping Taro abruptly?

A: Regulatory guidance emphasizes that the full course of therapy is often necessary to treat the infection successfully. The decision to stop the medicine early is a clinical determination that should be made only by a healthcare professional.

Q: How should Taro be stored, for example, regarding temperature or light?

A: The unmixed sterile powder must be stored at controlled room temperature, typically 20 C to 25 C (68 F to 77 F). After the powder is mixed with liquid (reconstituted), the solution must be used or discarded within a specific period, such as 24 hours if kept at room temperature or 48 hours if refrigerated.

Q: Can Taro cause problems with sleep, such as insomnia or drowsiness?

A: Official adverse reaction lists include Insomnia (difficulty sleeping) as a common side effect of the medication. Severe sleepiness has also been reported as an uncommon side effect in some official documents.

Q: Are there different forms of Taro available, like a tablet versus a liquid?

A: The drug is officially regulated and supplied solely as a sterile powder for solution for intravenous infusion, meaning it must be mixed with a liquid and administered directly into a vein. No official tablet or oral liquid form is mentioned in regulatory documentation.

Q: What happens in the body when Taro reaches its peak concentration?

A: When the drug's components reach their peak concentration, the piperacillin component acts to inhibit bacterial cell wall synthesis, which is the mechanism that kills the bacteria. The tazobactam component protects the piperacillin from being broken down by certain resistance enzymes produced by the bacteria.

Q: What does 'Black Box Warning' mean for a drug like Taro?

A: A Boxed Warning (formerly known as a Black Box Warning) is the highest-level safety alert issued by the FDA for certain prescription medicines. Its purpose is to draw attention to potential major and serious risks associated with the drug, though the warning itself does not represent an absolute prohibition on its use.

Q: What are the current research topics related to Taro being investigated in trials?

A: Active research is currently being conducted in clinical trials that examine specific areas of use. These studies often focus on optimizing dosing strategies in highly specific patient groups, such as the critically ill, or on examining the relationship between drug concentration and patient outcomes.

Q: Is Taro safe to use during pregnancy?

A: Official regulatory documents describe the status of use during pregnancy as conditional and generally state that the potential benefit to the patient must be judged to outweigh the possible risk. The drug components are known to be able to cross the placenta.

Q: Can Taro be used while breastfeeding?

A: Official regulatory documents describe the status of use while breastfeeding as conditional and generally state that the potential benefit to the patient must be judged to outweigh the possible risk. The component piperacillin is known to be excreted into human breast milk.

How should Taro be stored and disposed of?

How to Store and Dispose of Taro? — Official Regulatory Information

There are no specific official storage, handling, stability, or disposal requirements documented in governmental drug regulatory sources, such as the FDA or EMA, for a pharmaceutical product named Taro. The term "Taro" is primarily associated with the root vegetable (Colocasia esculenta), which is governed by food and agricultural guidelines.

Since no labeled instructions for a drug product are available, general guidance for prescription and over-the-counter medicines should be followed for proper disposal. The best method is to utilize a drug take-back program or a prepaid mail-back envelope. If those options are not readily available, most medicines (those not on the official FDA flush list) can be disposed of in household trash after being mixed with an undesirable substance like dirt or used coffee grounds and placed in a sealed bag. Always keep all medicines in their original container, tightly closed, and safely out of the sight and reach of children to prevent accidental ingestion.

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

Available in countries:

Equivalent of Taro found in:

A-Z Index: