Clinical trial Recruiting at 1 site Interventional Ages 18 to 45 Women only

Pain relief for menstrual cramps using taVNS

Official title: A Randomized Two-Way Crossover Comparison Study of Pain Relief From Dysmenorrhea Employing taVNS and Sham Stimulation

Run by University of Electronic Science and Technology of China · NCT06912386 · Data updated 2026-11-12

This study is testing if a new treatment called taVNS can help women with moderate menstrual cramps feel less pain and rely less on medication during their periods.

Quick facts

Study typeInterventional
Ages18 Years to 45 Years
SexWomen only
Enrollment20 (estimated)
SponsorUniversity of Electronic Science and Technology of China
Academic / other
Locations1 site (Chengdu, Sichuan)
StatusRecruiting
StartedApril 1, 2025
Main results expectedJune 30, 2025
Study endsJune 30, 2025
Registry record updatedApril 4, 2025
Trial IDNCT06912386 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are women with regular menstrual cycles experiencing moderate dysmenorrhea who have used over-the-counter pain relief.

Probably not a fit

Patients with secondary dysmenorrhea or those on oral contraceptives may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates the effectiveness of transauricular vagal nerve stimulation (taVNS) in alleviating moderate dysmenorrhea. Participants will undergo taVNS for two months and a sham stimulation for another two months, with treatments starting two days before their menstrual cycle. They will keep a diary to track pain levels and medication use, and will attend clinic visits for assessments. The study aims to determine if taVNS can reduce the need for rescue medication during menstruation.

Why it matters

Potential benefit: If successful, this approach could provide a non-pharmacological option for managing menstrual pain.

How similar studies have gone: While the use of taVNS is a novel approach for dysmenorrhea, similar techniques have shown promise in other pain management studies.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Regular menstrual cycle (28 days ± 7 days);
* Average moderate menstrual pain (with 4 - 7 NRS scores);
* History of over-the-counter (OTC) analgesic use for the treatment of menstrual pain (at least 1 IBUPROFEN for the first two days);
* 4 consecutive monthly menstrual cycles;
* Non-pregnant status;
* Agrees to use adequate birth control during the trial;
* Otherwise, healthy;
* Agree not to participate in any other clinical trial while enrolled in this trial ;
* No facial or ear pain, no recent ear trauma, no metal implants including pacemakers;
* Normal ECG, Heart Rate and Blood Pressure (systolic BP 105-130, diastolic BP 60-90, heart rate per min at rest 60-85);

Exclusion Criteria:

* Currently under medications (except for analgesic medication for menstrual cycle);
* Use of oral contraceptive;
* Secondary cause for dysmenorrhea (i.e., endometriosis, adenomyosis, uterine fibroids, or infection);
* Unstable or serious illness (e.g., kidney, liver, GIT, heart conditions, diabetes, thyroid gland function, lung conditions, chronic asthma, diagnosed psychological or mood disorder, hypertension, any bleeding disorders, recent surgery, or concurrent blood thinning treatment);
* Current malignancy or treatment for malignancy within the previous 2 years;
* Pregnant or lactating women;
* Active smokers, nicotine use, or drug (prescription or illegal substances) abuse;
* Chronic past and/or current alcohol use (\>14 alcoholic drinks per week);
* Any condition that in the opinion of the investigator, makes the participant unsuitable for inclusion;
* Unwilling or unable to comply with protocol;
* Active genitourinary infection in the last four weeks;
* Unable to read or comprehend the informed consent;
* Unwilling to complete study procedures;
* Participated in any other clinical trial during the past 1 month;
* Personal or family history of seizure, mood, or cardiovascular disorders;
* Allergic reaction to surface electrodes.

Where it's running

  • Uestc
    Chengdu, Sichuan, China
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.