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NephrotoxicityNCT07873372

Rutin and Ascorbic Acid for Prevention of Vancomycin-Induced Nephrotoxicity in Adult Patients" - a Clinical Trial Protocol Evaluating Whether Combined Rutin/Vitamin C Supplementation Reduces Kidney Toxicity From Vancomycin, Compared to Vitamin C Alone and Control.

A study testing Rutin + Ascorbic Acid (RUTA C60®) and Ascorbic Acid (C-Retard®) in people with Nephrotoxicity and Acute Kidney Injuries, run by Ain Shams University at 1 site in Egypt.

Enrolling by invitation

Enrolling by invitation. The study team selects and invites participants, usually from an existing group of patients.

Sites and contacts
Official record
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Trial summary

Background: Vancomycin, a key antibiotic for MRSA infections, frequently causes nephrotoxicity (kidney damage) via oxidative stress, especially at the higher doses and longer durations now recommended. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Nephrotoxicity, Acute Kidney Injuries
What is being tested?
Rutin + Ascorbic Acid (RUTA C60®) and Ascorbic Acid (C-Retard®)
Could I receive a placebo?
No, everyone receives an active treatment
How many people
120 participants
Where
1 siteEgypt
Study dates
1 Oct 2026to 30 Dec 2026
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Patients admitted to different departments of the hospital
  • Both genders, aged ≥18 years
  • Susceptibility to gram-positive infection (MRSA) requiring vancomycin treatment for at least 7 days
  • Not receiving any concurrent antioxidant treatment (e.g., vitamin E)
  • Free of proteinuria and/or hematuria
  • No prior history of acute kidney injury (AKI)

Who cannot join

  • Known allergy to vancomycin, ascorbic acid, or rutin
  • Pregnant or lactating females
  • Baseline serum creatinine ≥2 mg/dL
  • Receiving other nephrotoxic drugs at time of initiating vancomycin (e.g., aminoglycosides, colistin, amphotericin B, tacrolimus, cisplatin, or calcineurin inhibitors)
  • Urinary tract stones
  • Expected to undergo contrast medium administration within 7 days

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Egypt1 site
  • Ain Shams University Hospitals

    Cairo, Cairo Governorate, 11517

Other trials in Egypt

About this study

Official title: Impact of Rutin and Ascorbic Acid in Reducing The Incidence of Vancomycin Indueced Nephrotoxicity in Adult Patients

Background: Vancomycin, a key antibiotic for MRSA infections, frequently causes nephrotoxicity (kidney damage) via oxidative stress, especially at the higher doses and longer durations now recommended. Antioxidants like rutin and ascorbic acid (vitamin C) have shown promise in reducing this toxicity in preclinical and limited human studies, but no trial has tested them together.

Aim: Evaluate whether combined rutin + ascorbic acid supplementation reduces the incidence of vancomycin-induced nephrotoxicity (VAN) in adult patients, compared to ascorbic acid alone and a control group.

Read more

Design: Prospective, open-label, randomized controlled, three-arm clinical trial; 120 adult patients recruited from Internal Medicine departments at Ain Shams University Hospital.

Population: Adults (≥18) receiving vancomycin for ≥7 days for MRSA infections, without prior kidney injury, proteinuria/hematuria, or other antioxidant/nephrotoxic drug use.

Outcomes:

Primary: Changes in serum creatinine, NGAL, BUN, creatinine clearance, BUN/creatinine ratio Secondary: Serum potassium/sodium, CRP, total leukocyte count, procalcitonin

Read the detailed description

Background \& Rationale Vancomycin is a key antibiotic against MRSA but causes nephrotoxicity in 5-25% of patients (up to 35% with concurrent aminoglycosides), largely via oxidative stress and reactive oxygen species that trigger renal cell apoptosis.

Risk rises with newer high-dose regimens (trough 15-20 mg/L), treatment >5 days, obesity, intermittent infusion, and co-administration with other nephrotoxins (e.g., piperacillin/tazobactam, flucloxacillin).

Antioxidants (N-acetylcysteine, vitamin E) have shown benefit; ascorbic acid and rutin individually have antioxidant/anti-inflammatory effects supported by prior human and animal studies, but no trial has tested the rutin + vitamin C combination specifically for preventing vancomycin nephrotoxicity - this is the gap the study addresses.

Aim of the study:

Evaluate whether rutin + ascorbic acid supplementation reduces vancomycin-induced nephrotoxicity (VAN) versus ascorbic acid alone and versus control.

Study Design:

Prospective, open-label, randomized controlled, three-arm trial Setting: Internal Medicine departments, Ain Shams University Hospital Sample size: 120 patients (40/arm), calculated via G*Power (effect size 0.3, α=0.05, power 80%, adjusted for dropout)

Groups:

Group 1 (Intervention) Vancomycin + Rutin 60mg/Vitamin C 160mg (RUTA C60®), 2 tablets TID, 30 min pre-dose

Group 2 (Intervention) Vancomycin + Vitamin C 500mg (C-Retard®), 1 capsule BID, 30 min pre-dose

Group 3 (control) Vancomycin alone Randomization: Computer-generated block randomization (block size 6); allocation concealed via sequentially numbered, opaque, sealed envelopes (SNOSE).

Eligibility Criteria:

Include: Adults ≥18, MRSA infection needing vancomycin ≥7 days, no concurrent antioxidants, no proteinuria/hematuria/prior AKI Exclude: Drug allergies, pregnancy/lactation, baseline S.cr ≥2mg/dL, concurrent nephrotoxins, urinary stones, upcoming contrast media exposure

Outcomes:

Primary: Serum creatinine, plasma NGAL, BUN, creatinine clearance (Cockcroft-Gault), BUN/creatinine ratio Secondary: Serum K⁺/Na⁺, CRP, total leukocyte count, procalcitonin

Being tested
Rutin + Ascorbic Acid (RUTA C60®), Ascorbic Acid (C-Retard®)
Keywords
Vancomycin, Rutin, Ascorbic Acid, Serum Creatinine, Oxidative Stress, NGAL, Creatinine Clearance
Medical subject headings
Acute Kidney Injury

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Rutin + Ascorbic Acid (RUTA C60®)Drug

    Also called (RUTA C60®)

    Rutin 60 mg combined with ascorbic acid 160 mg, administered orally as two tablets three times daily. Each dose will be given half an hour before the scheduled vancomycin infusion, continued throughout the 14-day study period. The combination is intended to reduce oxidative stress and inflammation associated with vancomycin-induced nephrotoxicity through the antioxidant properties of both agents.

  • Ascorbic Acid (C-Retard®)Drug

    Ascorbic acid 500 mg, administered orally as one sustained-release capsule twice daily. Each dose will be given half an hour before the scheduled vancomycin infusion, continued throughout the 14-day study period. Ascorbic acid is intended to act as an antioxidant, scavenging reactive oxygen species generated by vancomycin therapy to mitigate renal tubular injury.

Study groups in NCT07873372
Study groupRoleWhat they receive
Rutin + Ascorbic Acid (RUTA C60®)ExperimentalPatients in this arm will receive vancomycin plus a fixed-dose combination of rutin 60 mg and ascorbic acid 160 mg (RUTA C60®), given as two tablets three times daily, administered half an hour before each vancomycin dose, for the duration of the 14-day study period.
Receives: Drug: Rutin + Ascorbic Acid (RUTA C60®)
Ascorbic Acid AloneActive comparatorPatients in this arm will receive vancomycin plus ascorbic acid 500 mg (C-Retard®), given as one capsule twice daily, administered half an hour before the vancomycin dose, for the duration of the 14-day study period.
Receives: Drug: Ascorbic Acid (C-Retard®)
Vancomycin AloneNo interventionPatients in this arm will receive vancomycin therapy alone, with no rutin or ascorbic acid supplementation, following standard dosing protocols for the duration of the 14-day study period.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Serum Creatinine

    Measurement of serum creatinine levels to detect changes indicative of vancomycin-induced nephrotoxicity across the three study groups.

    Measured: Daily, from baseline to Day 14

  2. Change in Creatinine Clearance

    Creatinine clearance calculated using the Cockcroft-Gault equation (adjusted for body weight/BMI) to assess renal function changes during vancomycin therapy.

    Measured: Daily, from baseline to Day 14

  3. Change in Blood Urea Nitrogen (BUN)

    Measurement of BUN levels as a marker of renal function and potential nephrotoxic injury.

    Measured: Daily, from baseline to Day 14

  4. Change in BUN/Creatinine Ratio

    Calculated ratio of BUN to serum creatinine to further characterize the nature and severity of renal impairment.

    Measured: Daily, from baseline to Day 14

  5. Change in Plasma NGAL (Neutrophil Gelatinase-Associated Lipocalin)

    Plasma NGAL measured as an early biomarker of acute kidney tubular injury, prior to changes in serum creatinine.

    Measured: Baseline, Day 3, and Day 14 (end of study)

Secondary outcomes (5)
  1. Change in Serum Potassium

    Measurement of serum potassium levels to monitor electrolyte disturbances associated with renal impairment.

    Measured: Daily, from baseline to Day 14

  2. Change in Serum Sodium

    Measurement of serum sodium levels to monitor electrolyte disturbances associated with renal impairment.

    Measured: Daily, from baseline to Day 14

  3. Change in C-Reactive Protein (CRP)

    CRP levels measured to assess the systemic inflammatory response during vancomycin therapy and its modulation by antioxidant supplementation.

    Measured: Baseline and Day 14 (end of study)

  4. Change in Procalcitonin

    Procalcitonin measured as a marker of infection severity and inflammatory response.

    Measured: Baseline and Day 14 (end of study)

  5. Change in Total Leukocyte Count

    Total leukocyte count measured to assess infection status and inflammatory response over the treatment course.

    Measured: Baseline and Day 14 (end of study)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted14 Oct 2026
  2. Study start1 Oct 2026 (estimated)
  3. Primary completion1 Dec 2026 (estimated)
  4. Study completion30 Dec 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Model description
This is a prospective, interventional, three-arm, parallel-group randomized controlled trial. A total of 120 adult patients requiring vancomycin therapy for MRSA infections will be randomly allocated in a 1:1:1 ratio to one of three parallel groups: (1) vancomycin plus rutin/ascorbic acid combination (RUTA C60®), (2) vancomycin plus ascorbic acid alone (C-Retard®), or (3) vancomycin alone (control). Each group will receive its assigned regimen concurrently with vancomycin for the duration of the 14-day monitoring period, with no crossover between arms. Randomization will be achieved using a computer-generated sequence with block randomization (block size of six) to maintain balanced allocation throughout recruitment.
Masking
None (open label)
Enrolment
120 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07873372
Sponsor's protocol ID
FMASU MD233/2026
Status last verified
Oct 2026
First submitted
24 Sep 2026
Last updated
14 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Individual participant data will not be shared, as this was not specified in the informed consent obtained from participants, and no data-sharing infrastructure or repository has been established for this single-center academic study.

Questions about this trial

What is this clinical trial studying?

A study testing Rutin + Ascorbic Acid (RUTA C60®) and Ascorbic Acid (C-Retard®) in people with Nephrotoxicity and Acute Kidney Injuries, run by Ain Shams University at 1 site in Egypt.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: enrolling by invitation, as of the sponsor's last update on 14 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Serum Creatinine (time frame: Daily, from baseline to Day 14). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Oct 2026.

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