Efficacy of Gou-Teng-San (GTS) in Patients With Episodic Migraine

NCT07496034 | Recruiting Phase 3

• 1 other identifier: CS1-25048
• Study Type: interventional
• Target: 40
• Locations: 1 country
• Sites: 1

Brief Summary

The goal of this study is to learn whether Gou-Teng-San (GTS), a traditional herbal medicine, is effective and safe for adults with episodic migraine. In this double-blind randomized controlled trial, participants with episodic migraine will be assigned by chance to a study treatment group. The study will evaluate whether GTS can reduce migraine frequency, improve migraine-related symptoms, and lessen the impact of migraine on daily life. Researchers will also monitor safety and tolerability throughout the study.

Conditions

Episodic Migraine

Keywords

Episodic migraine; Gou-Teng-San; Gou Teng San; Choto-san

Outcome Measures

Primary Outcomes (1)

• Change from Baseline in Mean Monthly Migraine Days at 4 Weeks

  From baseline to Week 4

Study Arms (2)

Gou-Teng-San

EXPERIMENTAL

Drug: Gou-Teng-San

Placebo

PLACEBO COMPARATOR

Drug: Placebo

Interventions

Gou-Teng-San DRUG

Participants in this arm will receive Gou-Teng-San (GTS) orally at a dose of 5 g twice daily (total daily dose: 10 g), once in the morning and once in the evening, for 4 consecutive weeks.

Also known as: Gou-Teng-San and standard care

Gou-Teng-San

Placebo DRUG

Participants in this arm will receive placebo (starch) orally at a dose of 5 g twice daily (total daily dose: 10 g), once in the morning and once in the evening, for 4 consecutive weeks.

Also known as: Placebo and stabdard care

Placebo

Eligibility Criteria

• Age: 18 Years - 70 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Adults aged 18 to 70 years.
• History of episodic migraine for at least 12 months before screening, meeting the International Classification of Headache Disorders, 3rd edition (ICHD-3) criteria, or clinically diagnosed migraine with no more appropriate ICHD-3 diagnosis.
• During the 28-day screening period, participants must meet criteria for episodic migraine, defined as headache occurring on \>=6 and \<=14 days, of which \>=4 days meet at least 1 of the following: (1) ICHD-3 criteria C and D for 1.1 migraine without aura; (2) ICHD-3 criteria B and C for 1.2 migraine with aura; (3) probable migraine (missing 1 migraine criterion); or (4) headache considered to be migraine based on a positive response to migraine-specific acute treatment (e.g., a triptan or an ergotamine derivative).
• Not receiving preventive migraine medication for at least 5 half-lives before enrollment, or receiving no more than 1 preventive migraine medication at a stable dose and regimen for at least 2 months before informed consent, whether for migraine or another medical condition (e.g., propranolol for hypertension).
• Body mass index (BMI) between 17.5 and 37.5 kg/m2, and body weight between 35 and 120 kg.
• Adequate compliance with headache diary completion during screening, defined as completion on at least 24 of 28 days (\>=85%), with diary data considered acceptable by the investigator.
• Able to comply with study restrictions and complete all protocol-required study procedures.
• Able to understand and sign the informed consent form.
• No major cardiovascular, hepatic, or renal disease.

You may not qualify if:

• Known allergy or hypersensitivity to Gou-Teng-San or any of its ingredients.
• Receipt of botulinum toxin type A injections in the head, face, or neck for any reason within 4 months before screening.
• Use of opioid-containing or barbiturate-containing medications on more than 4 days per month.
• Lack of efficacy after at least 3 months of treatment at accepted migraine treatment doses in 2 or more of the following preventive medication classes: (1) topiramate or valproic acid; (2) flunarizine; (3) amitriptyline, venlafaxine, or duloxetine; (4) atenolol or propranolol.
• Use of migraine treatment interventions within 2 months before screening, such as nerve block or transcranial magnetic stimulation.
• Clinically significant hematologic, cardiac, renal, endocrine, pulmonary, gastrointestinal, urinary, neurologic, hepatic, ophthalmologic, psychiatric, or other disease that, in the investigator's judgment, would interfere with study participation or study procedures.
• Participation in another clinical trial of a drug or medical device within 2 months before screening, or within 5 half-lives of the investigational product used in that trial, whichever is longer.
• Use of other Chinese herbal medicines within 4 weeks before screening.
• Previous exposure to monoclonal antibodies targeting the calcitonin gene-related peptide (CGRP) pathway or CGRP receptor antagonists.
• History of alcohol or drug abuse within the past 2 years.
• Women who are breastfeeding, have a positive pregnancy test at screening, or are unwilling to use contraception during the study if of childbearing potential.
• Any other condition or circumstance that, in the investigator's judgment, would make the participant unsuitable for the study or unlikely to complete the study successfully.

Sponsors & Collaborators

• Tsai, Chueh-Yi, MD: lead
• Chung Shan Medical University: collaborator
• China Medical University, Taiwan: collaborator

Study Sites (1)

Chung Shan Medical University Hospital

Taichung, South, 402306, Taiwan

RECRUITING

MeSH Terms

Interventions

Standard of Care

Intervention Hierarchy (Ancestors)

Quality Indicators, Health Care; Quality of Health Care; Health Services Administration; Health Care Quality, Access, and Evaluation

Central Study Contacts

Chueh-Yi Tsai, MD, MS

CONTACT

886-4-2473-9595; neurojoule@gmail.com

Study Design

• Study Type: interventional
• Phase: phase 3
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Attending Physician, Department of Neurology, Chung Shan Medical University Hospital; Ph.D. Student, Graduate Institute of Integrated Medicine, China Medical University

Study Record Dates

• First Submitted: March 22, 2026
• First Posted: March 27, 2026
• Study Start: July 1, 2025
• Primary Completion (Estimated): December 31, 2026
• Study Completion (Estimated): December 31, 2026
• Last Updated: May 20, 2026

Record last verified: 2026-03

Data Sharing

• IPD Sharing: Will not share

Locations

TW (1)