UnknownPhase 4

Pharmacokinetics of Simvastatin Post Laparoscopic Sleeve Gastrectomy (LSG)

Singapore10 participantsStarted 2018-06-13

Plain-language summary

This study aims to investigate the change in systemic exposure of simvastatin post LSG.

Who can participate

Age range

21 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Planned for laparoscopic sleeve gastrectomy at National University Hospital * Taking statin * Aged 21 or above Exclusion Criteria: * Patient on concomitant treatment with medications/ food/ herbal supplements that may affect the pharmacokinetics of simvastatin: boceprevir, conivaptan, cyclosporine, efavirenz, mitotane, tocilizumab, rifamycin, amiodarone, amlodipine, aprepitant, azithromycin, colchicine, fenofibrate, imatinib, raltegravir, ranolazine, teriflunomide, ticagrelor, fusidic acid, protease inhibitors, telaprevir, telithromycin, gemfibrozil, erythromycin, clarithromycin, carbamazepine, rifampicin, ketoconazole, fluconazole, itraconazole, voriconanzole, diltiazem, verapamil, dexamethasone, prednisolone, phenytoin, ritonavir, indinavir, nelfinavir, bosentan, telithromycin, nefazodone, St John's wort, orlistat, sibutramine and other strong CYP 3A4 inhibitors/ inducers * Pregnant ladies

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Area Under Curve (AUC) of simvastatin

Timeframe: baseline (before surgery). 3 months after surgery

Maximum serum concentration (Cmax) of simvastatin

Timeframe: baseline (before surgery). 3 months after surgery

Time at which maximum serum concentration (Tmax) of simvastatin

Timeframe: baseline (before surgery). 3 months after surgery

Area Under Curve (AUC) of simvastatin acid

Timeframe: baseline (before surgery). 3 months after surgery

Maximum serum concentration (Cmax) of simvastatin acid

Timeframe: baseline (before surgery). 3 months after surgery

Time at which maximum serum concentration (Tmax) of simvastatin acid

Timeframe: baseline (before surgery). 3 months after surgery

Trial details

NCT IDNCT03571802

SponsorNational University Hospital, Singapore

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2025-06-30

Contact for this trial

Asim Shabbir, MBBS

+65 9820 0814 cfsasim@nuhs.edu.sg

View on ClinicalTrials.gov More Obesity trials

Who can participate

Age range

21 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

What they're measuring

Area Under Curve (AUC) of simvastatin

Timeframe: baseline (before surgery). 3 months after surgery

Maximum serum concentration (Cmax) of simvastatin

Timeframe: baseline (before surgery). 3 months after surgery

Time at which maximum serum concentration (Tmax) of simvastatin

Timeframe: baseline (before surgery). 3 months after surgery

Area Under Curve (AUC) of simvastatin acid

Timeframe: baseline (before surgery). 3 months after surgery

Maximum serum concentration (Cmax) of simvastatin acid

Timeframe: baseline (before surgery). 3 months after surgery

Time at which maximum serum concentration (Tmax) of simvastatin acid

Timeframe: baseline (before surgery). 3 months after surgery