🏛️ Verified NIH Record • Updated 2026-05-20

A Study of Herbal Supplements in Cancer Survivors With Constipation (NCT07091084)

Herbal Formula Ma-Zi-Ren-Wan (MZRW) on Bowel Movement Function and Gut Microbiome Among Cancer Survivors With Constipation: A Double-blinded Randomized Controlled Trial (RELIEVE)

🟢 Recruiting Observational / Diagnostic 📋 Clinical Research Protocol Sponsor: Memorial Sloan Kettering Cancer Center

🩺 Plain-English Summary (8th-Grade Level)

The purpose of this study is to find out whether MZRW is an effective treatment for constipation in cancer survivors. The researchers will compare MZRW with placebo, a pill that looks like MZRW and is given in the same way, but contains no medication. The researchers will also study the effect MZRW has on the gut microbiome. The gut microbiome is a diverse community of microorganisms living in the digestive system, essential for digestion and immune function.

Who can join: To join this study, participants generally need to meet the listed inclusion criteria (22 items) and avoid the listed exclusions (6 items).

Location: Memorial Sloan Kettering Basking Ridge (All Protocol Activities) — Basking Ridge, New Jersey

Age range: 18 Years

🧪 Interventions in This Study

📋 "Do I Qualify?" — 1-Minute Self Screener

Instant Checklist

Check every box below. If you can check all of them, you may meet the study's basic screening requirements (final eligibility is confirmed by the site team).

Usually NOT eligible if any of the following apply:

  • Exclusion Criteria:
  • Patients who have allergic history to herbs or Chinese medicine;
  • Clinically significant abnormal liver (2 times the ULN for ALT or AST) and kidney disfunction(eGFR below 59 mL/min/1.73m² ) from recent laboratory test recorded in the medical record (within 2 month);
  • Patients who have any signs of bowel obstruction, or have high risk of bowel obstruction assessed by their treating physician, including factors such as tumor invasion into abdominal organs, recent abdominal surgery, and prior abdominal radiation therapy;
  • Patients who are prescribed opioid antagonists including methylnaltrexone, naloxegol and naldemedine for opioid induced constipation and required not to stop the medication;
  • Women who are pregnant, lactating, or not practicing proper contraception by patient report.Patient's should follow proper contraception guidelines for at least 30 days following last dose of the study drug.

🔍 Extracted verbatim from the official NIH eligibility criteria. Always confirm with the study coordinator.

📍 All Participating Trial Locations (7 Sites)

  • Memorial Sloan Kettering Basking Ridge (All Protocol Activities) — Basking Ridge, New Jersey
  • Memorial Sloan Kettering Monmouth (All Protocol Activities) — Middletown, New Jersey
  • Memorial Sloan Kettering Bergen (All Protocol Activities) — Montvale, New Jersey
  • Memorial Sloan Kettering Suffolk- Commack (All Protocol Activities) — Commack, New York
  • Memorial Sloan Kettering Westchester (All Protocol Activities) — Harrison, New York
  • Memorial Sloan Kettering Cancer Center (All Protocol Activities) — New York, New York
  • Memorial Sloan Kettering Nassau (All Protocol Activities) — Rockville Centre, New York

📞 Contact the Study Coordinator

Phone: (646) 608-8552

Email: maoj@mskcc.org

Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.

💰 Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

Explore by condition: All Constipation clinical trials

💡 How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Contact the study coordinator using the phone/email above.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
🏛️ View Official NIH Record ↗