Devasid

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Devasid

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Devasid

Quick Facts

Property Description
Active Ingredients Ampicillin and Sulbactam
Form Powder for solution for injection
Pharmacological Class Antibiotics (Penicillins and beta-Lactamase Inhibitor)
Common Use Treatment of serious bacterial infections
Origin Semi-synthetic (Penicillin derivative)

What Type of Medicine is Devasid and What is it Used For?

Devasid is a prescription-only medicine and a fixed-dose combination drug primarily used for the comprehensive treatment of bacterial infections. Pharmacologically, it is classified as an antibiotic belonging to the Penicillins and beta-Lactamase Inhibitor groups. This strategic combination is clinically recognized for providing enhanced therapeutic efficacy against resistant pathogens compared to single-agent penicillins. Its general purpose is to provide broad-spectrum activity by overcoming common bacterial defense mechanisms, a benefit observed in pharmacological studies.


Composition, Origin, and Dosage Form

The formulation contains two distinct active ingredients: the semi-synthetic penicillin Ampicillin and the beta-lactamase inhibitor Sulbactam. Devasid is supplied as a powder for solution for injection, a preparation that requires reconstitution with an appropriate solvent prior to use. The product is strictly designed for parenteral administration via either the intravenous or intramuscular routes, which ensures rapid delivery and high systemic drug concentrations often needed for serious infections.


Why is Ampicillin Combined with Sulbactam?

Ampicillin is combined with Sulbactam to achieve a powerful synergistic effect and protect the antibiotic from destruction by resistant bacteria. The key benefit is that Sulbactam functions as a resistance blocker by irreversibly inhibiting beta-lactamase enzymes, which are the main defense mechanisms bacteria use to destroy penicillin-class drugs. By neutralizing these enzymes, Sulbactam effectively extends the antibiotic spectrum of Ampicillin, restoring Ampicillin's activity against organisms that would be resistant if Ampicillin were administered alone.

Regulatory References

  1. NIH/NLM LiverTox Review on Ampicillin-Sulbactam

What side effects are possible with Devasid?

Possible Side Effects and Safety Information

The safety profile of Devasid (Ampicillin and Sulbactam) is defined by officially documented adverse reactions classified by frequency and affected physiological system. The most frequently reported adverse reactions in clinical trials are Diarrhea and Rash, with other less frequent events including Nausea, Vomiting, Itching, and local reactions such as pain at the injection site or thrombophlebitis.


Serious Adverse Reactions and Safety Constraints

The official labeling highlights the potential for serious and occasionally fatal hypersensitivity reactions, including Anaphylaxis, which are critical safety concerns. Other rare but serious documented events include severe skin reactions, categorized as Severe Cutaneous Adverse Reactions (SCARs), and Clostridioides difficile-Associated Diarrhea (CDAD), which may manifest up to two months after treatment cessation. Hepatic dysfunction, including cholestatic jaundice, is also officially reported.

Use is formally contraindicated in individuals with a prior history of serious hypersensitivity to the drug or to other beta-lactam antibacterial drugs. Contraindication also applies to patients with a history of cholestatic jaundice or liver dysfunction previously associated with the medicine.


Population-Specific Safety Notes

The regulatory documents contain specific safety notes for certain populations. Patients with renal impairment require caution because the elimination kinetics of the drug are affected. Administration is generally not recommended for individuals with infectious mononucleosis due to an increased risk of generalized rash. For neonates and premature infants, periodic monitoring of renal, hepatic, and blood systems is advised during prolonged therapy.

Overdose and Emergency Response

The official regulatory profile for Ampicillin and Sulbactam (Devasid) defines overdose primarily through the risk of Central Nervous System (CNS) toxicity. The most prominent documented clinical manifestation is the occurrence of convulsions (seizures), which are classified as a serious neurological adverse reaction. This toxicity is linked to the drug compounds reaching high concentrations in the cerebrospinal fluid (CSF), a condition resulting from systemic overexposure.

Official labeling identifies that patients with impaired renal function are a population-specific consideration, as their reduced clearance can lead to prolonged, high serum concentrations and an increased potential for these dose-related neurological events.

Immediate medical attention is mandated for a suspected overdose. Emergency services should be contacted for life-threatening signs such as seizure, collapse, trouble breathing, or if the individual cannot be awakened. Management should be symptomatic and supportive. The regulatory documents confirm that both Ampicillin and Sulbactam may be removed from the systemic circulation by hemodialysis as a procedural step, though no specific antidote is known for the combination.

Therapeutic Uses of Devasid

What Devasid Treats: Main Uses and Benefits

This medication is commonly used to help treat serious bacterial infections, addressing conditions where symptoms may intensify temporarily in these acute clinical settings. The medicine is applied across domains where additional symptomatic support is needed, primarily for complicated skin and soft tissue infections, intra-abdominal infections (like peritonitis), and serious gynecological infections (such as pelvic inflammatory disease).

Targeting Complex Symptoms and Clinical Scenarios

Devasid is used for acute, severe bacterial infections and is relevant in clinical contexts involving heightened systemic burden. It helps address symptom clusters related to systemic imbalance (e.g., high or persistent fever and chills) or intense localized inflammatory distress. In managing symptoms related to the infection, it supports the patient during difficult episodes by easing distress and contributes to easing the overall symptom load. This broad-spectrum support is considered relevant when supportive symptom management is appropriate for infections in pediatric and hospitalized patients or when used as empiric initial therapy.

“This antibiotic is primarily relevant in contexts marked by increased discomfort and is commonly used when short-term symptomatic assistance is needed.”


Quick Fact: Relief for Acute Infections
Symptom focus: Systemic imbalance and localized inflammatory distress.
Therapeutic context: Used for conditions characterized by heightened symptoms of acute, severe bacterial infections, in conditions presenting with systemic or localized discomfort.
Patient benefit: Provides supportive relief that helps patients cope more steadily with symptom fluctuations.

Regulatory References

  1. NIH MedlinePlus Drug Information on Ampicillin and Sulbactam

Eligibility and Restrictions for Use

Devasid, which contains ampicillin and sulbactam, is subject to specific constraints and formal contraindications as defined in official regulatory labeling for the combination product.

Formal Contraindications (Must Not Use)

The drug is contraindicated in individuals with a history of serious hypersensitivity reactions (e.g., anaphylaxis, Stevens-Johnson syndrome) to any penicillin-class drug, to sulbactam, or to any other beta-lactam antibacterial drugs (e.g., cephalosporins). It is also contraindicated in patients with a history of cholestatic jaundice or hepatic dysfunction associated with prior use of ampicillin/sulbactam.

Eligibility Restrictions and Special Populations

  • Infectious Mononucleosis: The drug is not recommended for patients with infectious mononucleosis, as a high percentage of these individuals develop a non-allergic skin rash during therapy.
  • Renal Impairment: Patients with impaired renal function must have their dosing interval extended based on the degree of creatinine clearance to remain eligible for use. The standard dose is maintained, but the time between doses is increased.
  • Pediatric Use: Official labeling provides specific dosing guidance for patients beginning at one month of age and older.
  • Pregnancy and Lactation: Use during pregnancy is permitted only if clearly needed, based on a careful weighing of potential risks and benefits. Both components are excreted in breast milk, requiring caution during lactation.

What should I know about interactions with other medicines?

The official interaction profile for Devasid (Ampicillin/Sulbactam) details pharmacokinetic constraints related to renal excretion, physical incompatibility, and efficacy-reducing risks documented in government labels.

Pharmacokinetic and Exposure-Altering Interactions

  • Probenecid co-administration is officially documented to inhibit the renal tubular secretion of both components, resulting in higher and more prolonged serum levels of Ampicillin and Sulbactam.
  • Allopurinol used concurrently with the Ampicillin component substantially increases the documented incidence of skin rash.
  • In patients with severe renal impairment, the elimination kinetics of both components are similarly affected, resulting in officially recognized reduced clearance and a prolonged half-life.

Physical Incompatibility and Pharmacodynamic Effects

  • A mandatory separation rule exists for Aminoglycosides: Devasid must not be physically mixed in the same intravenous fluid container due to the risk of in vitro inactivation. If administered concurrently, they must be given at separate sites and at least one hour apart.
  • Bacteriostatic agents (such as tetracyclines or chloramphenicol) should generally be avoided concurrently, as this co-administration may potentially interfere with the bactericidal effect of the penicillin component.
  • Administration may officially reduce the effectiveness of estrogen-containing oral contraceptives.

Laboratory Test Interference

  • Administration is associated with causing false-positive reactions when testing for glucose in the urine using copper sulfate tests (e.g., Clinitest).

Mechanism of Action

The Dual Mechanism of Action

The activity of Devasid (Ampicillin and Sulbactam) is driven by two complementary mechanistic domains, primarily focused on disrupting bacterial cell wall synthesis and neutralizing beta-lactamase enzymes. The final cellular consequence is driven by their synergistic action on bacterial enzymes and cell structure.


Directly Blocking Bacterial Cell Wall Construction

The Ampicillin component's action results in bactericidal cellular effects by targeting Penicillin-Binding Proteins (PBPs), a class of essential bacterial enzymes. Ampicillin acts as an irreversible inhibitor, permanently binding to PBPs and blocking the final transpeptidation step required for cross-linking the structural peptidoglycan layer of the bacterial wall. This molecular interference leads to the complete loss of cell wall integrity, causing the bacterial cell to rupture and die from osmotic failure.


Blocking the Mechanism of Enzymatic Degradation

the boldsymbolbeta-Lactamase inhibitor, Sulbactam, acts to block the degradation of Ampicillin by neutralizing the bacterial defense system. Sulbactam functions as a suicide inhibitor against boldsymbolbeta-Lactamase enzymes. It is hydrolyzed by the enzyme, but instead forms a highly stable, covalent intermediate that permanently inactivates the beta-Lactamase. This action prevents the inactivation of Ampicillin, which permits Ampicillin to engage its PBP targets in strains that produce the relevant beta-lactamases.

Dosage and Administration Information

Devasid is administered exclusively via the parenteral route, meaning it must be given as either an intravenous (IV) injection/infusion or an intramuscular (IM) injection. The medicine is supplied as a sterile powder that requires reconstitution with an appropriate diluent immediately prior to use. For intravenous use, the solution must be delivered slowly, over a minimum duration of 10 to 15 minutes for injection or 15 to 30 minutes for infusion.

Standard Usage Pattern Official Instructions
Dosing Ratio Ampicillin and Sulbactam are maintained in a fixed 2:1 ratio.
Adult Dosing Range 1.5 g to 3 g (total drug content) per dose. The maximum daily dose of the sulbactam component is limited to 4 g.
Standard Frequency Doses are typically administered at a fixed interval of every 6 hours (q6h).
Treatment Duration The course generally lasts 5 to 14 days, and administration is often continued for at least 48 hours after the patient’s fever and other systemic signs have resolved.

Population-Specific Usage Adjustments

Specific instructions exist for adjusting the dosing interval for patients with impaired kidney function. For adults with moderate to severe renal impairment (low creatinine clearance), the time between doses must be extended, such as to every 12 or 24 hours, while maintaining the same milligram dose. For example, patients undergoing hemodialysis are instructed to receive the dose after the dialysis session to account for drug removal. Pediatric patients (over one year of age) are dosed according to their weight, receiving 300 mg/kg/day (total drug content), divided equally and administered every 6 hours.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Devasid

Evidence for Use in Acute Bacterial Infections

Research for Devasid (Ampicillin/Sulbactam) primarily consists of short-term Randomized Controlled Trials (RCTs) and comparative studies examining its role in treating severe infections. These studies focused on hospitalized adult patients with conditions such as complicated skin and soft tissue infections, intra-abdominal infections, and serious gynecological infections.

The research examined specific clinical status outcomes at the end of therapy, alongside monitoring the microbiological status of the bacteria involved. Findings describe patterns related to clinical response during the acute phase when patients are experiencing periods of heightened symptoms related to the infection. Comparative trials were conducted, but the comparative evidence is lacking against some of the newest-generation antibiotics.

Limitations and Evidence Gaps

A consistent finding across the research is that follow-up durations were limited in most regulatory submission trials. Because of this structure, long-term effects are not fully established, and there is limited information for long-term outcomes concerning the durability of the microbiological outcome or the rate of infection recurrence.

Evidence for specific patient populations has also been explored, including dedicated clinical and Pharmacokinetic/Pharmacodynamic (PK/PD) studies conducted in pediatric patients. However, sample sizes were modest in many of these pediatric trials, meaning the results apply only to the populations studied and require careful interpretation across all age groups. Overall, evidence quality varies across studies due to differences in design and patient selection.

Key Studies & References

  1. A Multicenter, Randomized, Open-Label Comparison of the Safety And Efficacy of Tigecycline With That of Ampicillin-Sulbactam or Amoxicillin-Clavulanate to Treat Complicated Skin And Skin Structure Infections (NCT00368537)
  2. Ampicillin/Sulbactam: Current Status in Severe Bacterial Infections (Systematic Review/Overview of Clinical Data)
  3. Ampicillin / Sulbactam vs. Ampicillin / Gentamicin for Treatment of Chorioamnionitis (NCT00879190 - Used for Gynecological Infections Context)

Frequently Asked Questions (FAQ)

Common questions about Devasid (FAQ)

Q: How quickly should I expect to feel the effects of taking Devasid?

A: Devasid is administered by injection (either intravenously or intramuscularly) to allow the medicine to rapidly reach high concentrations in the bloodstream. Clinical studies often assess outcomes related to the reduction of infection symptoms, and a noticeable clinical response is generally observed within the first few days of therapy, though individual results may vary.

Q: Can Devasid cause fatigue or tiredness during the day?

A: Fatigue or unusual weakness during the day is not listed as one of the most common side effects in clinical trials. Regulatory safety documents indicate that symptoms of unusual weakness or tiredness have been reported in association with rare, serious adverse events like blood disorders or liver problems. Fatigue itself is not listed as a frequently reported side effect.

Q: Is it normal to have mild stomach upset when starting Devasid?

A: Official regulatory information indicates that gastrointestinal symptoms are among the frequently reported adverse reactions listed in clinical trial data. These reactions may include mild stomach upset, nausea, vomiting, or diarrhea.

Q: How long does Devasid typically stay in your system after stopping treatment?

A: In individuals with normal kidney function, the active components of Devasid are typically eliminated quickly, with a mean elimination half-life of about one hour. However, the elimination kinetics of the drug components are formally noted to be affected and prolonged in patients who have kidney impairment.

Q: Is Devasid safe to use for older adults (seniors)?

A: Regulatory documents contain specific guidance that for patients with impaired kidney function, which is more common in older adults, the time interval between doses must be extended. This adjustment is formally instructed to account for the slower drug clearance in these patients.

Q: Are there any specific foods or drinks I should avoid while taking Devasid?

A: Devasid is administered as an injection, and its pharmacological activity is not directly related to food consumption. However, information regarding alcohol or specific dietary instructions must be obtained from the prescribing healthcare provider.

Q: Can children or teenagers take Devasid, and if so, under what circumstances?

A: Official labeling provides specific dosing guidelines for pediatric patients starting at one year of age and older. It is approved for the treatment of certain serious bacterial infections, such as complicated skin and skin structure infections, in this age group.

Q: Is there a generic version of Devasid available yet?

A: Yes, the drug combination containing the active ingredients ampicillin and sulbactam is widely available from various manufacturers as a generic product.

Q: Does Devasid affect contraception or birth control pills?

A: Official drug information warns that administration of Devasid may potentially reduce the effectiveness of oral contraceptives that contain estrogen. The need for additional or alternative contraceptive measures should be discussed with a healthcare provider.

Q: Can Devasid cause changes in appetite or weight?

A: Changes in appetite are not listed as a common adverse effect. Loss of appetite (anorexia) has been reported in postmarketing surveillance. This is not a common side effect.

Q: Can Devasid be split, crushed, or chewed?

A: No. Devasid is supplied as a sterile powder that requires reconstitution (mixing with fluid) for injection. It is only designed for parenteral use, which means it is administered by injection into a vein (IV) or muscle (IM), and is not supplied in an oral form (like a tablet or capsule).

Q: Can Devasid affect blood sugar levels, especially for diabetics?

A: Official labeling indicates that Devasid does not necessarily alter the body's actual blood sugar levels. However, its administration is associated with causing false-positive results when testing for glucose in the urine using copper sulfate tests (e.g., Clinitest). This potential laboratory test interference is noted in the regulatory documents.

How should Devasid be stored and disposed of?

Storage and Disposal Requirements for Devasid

Devasid (Ampicillin/Sulbactam powder for injection) requires specific handling to maintain its stability and ensure safety.

Storage Conditions

Official labeling mandates that the dry powder be stored at a controlled room temperature not exceeding 30 C (86 F). The container must be kept tightly closed to protect the product from moisture and excessive heat. Like all medicines, Devasid must be stored out of the sight and reach of children.

Stability and Handling

The medicine is supplied as a sterile powder for solution for injection and is intended for Single Use only after it is prepared. Any unused portion of the reconstituted solution must be discarded promptly according to regulatory stability constraints.

Disposal Instructions

Disposal must align with federal and local regulations. The product should not be flushed down a sink or toilet. The recommended method for disposal of unused or expired product is an authorized drug take-back program. If this is unavailable, the medicine should be mixed with an undesirable substance, placed in a sealed container, and thrown into the household trash.

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

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