Which painkiller works better after gallbladder removal? lidocaine vs. magnesium
NCT ID NCT07248332
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested two common drugs, lidocaine and magnesium sulfate, to see which one works better for pain after gallbladder removal surgery. 168 adults received one of the two drugs during surgery, and their pain levels were checked at several points over 24 hours. The goal was to find a better way to manage pain after this common procedure.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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168 people
The number who actually took part.
- Started
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Jan 2024
- Finished
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Oct 2025
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Adults aged 18-65 years. ASA physical status I-II. Elective laparoscopic cholecystectomy planned under general anesthesia. Normal baseline renal, hepatic, and coagulation profile. Able to give informed consent and communicate pain scores. Negative pregnancy test for women of childbearing age Exclusion Criteria: * • ASA III-V patients. Allergy or hypersensitivity to ketamine, lidocaine, or related drugs. History of psychiatric illness or substance abuse. Chronic use of opioids, benzodiazepines, or MAO inhibitors. Pregnant or breastfeeding women. Chronic pain disorders or use of analgesics within 7 days pre-op. Major hepatic, renal, or cardiovascular dysfunction. History of myopathy or seizure disorders. Patients with atrioventricular block or on calcium-channel blockers. Conversion to open cholecystectomy during surgery. Inability to understand or report pain postoperatively.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Anesthesiology Department Liaquat National Hospital and Medical College
Karachi, Sindh, 78400, Pakistan
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Other studies related to the condition(s) this trial covers.
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