Can a CBD and THC mix pave the way for a new migraine therapy?
NCT ID NCT07146945
First seen Sep 04, 2026 · Last updated Sep 04, 2026
Summary
This Phase 1 trial tests the safety and tolerability of S1-221, a liquid containing CBD and THC, when given as single rising doses to healthy adults aged 18 to 65. Researchers will monitor side effects, measure how the drug moves through the body, and check for any abuse-related effects. They will also explore changes in the body's natural endocannabinoid levels. The results will help pick doses for future studies in people with migraine.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- S1-221, a liquid containing cannabidiol (CBD) and THC
- What this could lead to
- If this early safety study succeeds, it could support further testing of S1-221 as a potential treatment for migraine.
- What could go wrong
- This is a small Phase 1 trial focused on safety, not effectiveness. The drug may cause side effects, and results may not lead to a migraine treatment.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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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64 people
The number who actually took part.
- Started
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Aug 2025
- Finished
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Aug 2026
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
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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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Provision of signed and dated participant informed consent form (PICF) and willing and able to follow all study procedures and requirements for the duration of the study. * Healthy adult males and females aged 18 to 65 years, inclusive, at Screening. * Body mass index (BMI) of 18 to 32.0 kg/m2, inclusive, and body weight ≥50.0 kg, at Screening. * Considered healthy, as determined by no clinically significant findings from medical history or physical examination at Screening and Day -1, in the opinion of the Investigator. * Vital signs after 5 minutes resting in supine position within the following ranges (assessment may be repeated once per schedule time point, at the discretion of the Investigator, to obtain a clinically reliable result): * Systolic blood pressure: 90 to 140 mmHg inclusive; * Diastolic blood pressure: 40 to 90 mmHg inclusive; * Heart rate: 40 to 100 bpm inclusive. * Standard 12-lead ECG with parameters (average of triplicate readings) after 10 minutes in supine position within the following ranges (assessment may be repeated once per schedule time point, at the discretion of the Investigator, to obtain a clinically reliable result): * QRS \<120 msec; * QT \<500 msec; * QTc ≤450 msec (both genders); * PR interval ≥120 to ≤220 msec. * Screening and Day -1 (and Day 14 for Parts B and C) safety laboratory test values within normal ranges. Out of normal range values may be accepted by the Investigator if not considered clinically significant, with the exception of the following: * ALT or AST \>1.5 x upper limit of normal (ULN); * Total, indirect, or direct bilirubin \>1.5 x ULN. Participants with Gilbert's syndrome with indirect bilirubin outside of the normal range will not be excluded from the study; * Abnormal kidney function, as assessed by estimated glomerular filtration rate (eGFR) calculated using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI); * Creatinine \>1.2 x ULN; * Haemoglobin \<100.0 g/L in females or \<115 g/L in males; or white blood cells \<3.5 x 109/L or \>11.5 x 109/L; * HbA1c ≥6.5% (participant must be non-diabetic). In Parts B and C, any laboratory abnormalities noted prior to the crossover repeat dosing will be discussed with the medical monitor and Sponsor to determine whether repeat dosing may proceed as planned. * Negative tests for HBsAg, HBcAb, anti-HCV, and HIV antibodies at Screening. * Women of childbearing potential (WOCBP) must have a negative pregnancy test at Screening and Day -1 (and Day 14 for Parts B and C). Note: Definition of child-bearing potential is fertile and following menarche until becoming post-menopausal, unless permanently sterile. Permanent sterilisation methods include hysterectomy, bilateral salpingectomy and bilateral oophorectomy. A post-menopausal state is defined as no menses for 12 months without an alternative medical cause and follicle-stimulating hormone (FSH) documented in the post- menopausal range (≥40 IU/L). * WOCBP must agree to the use adequate contraception from Screening through 60 days following the last dose of study drug. Additionally, they should avoid egg/ova donation throughout the study and for 60 days after the last dose of the study drug. * Male participants must agree to use adequate contraception from Screening through 95 days following the last dose of study drug. Male participants with female partners that are surgically sterile or post-menopausal (defined as being amenorrhoeic for at least 12 months without an alternative medical cause) may also be included and will not be required to use above-described methods of contraception. Male partners with potentially post-menopausal females who are under the age of 55 years must use condoms unless their partner's postmenopausal status has been confirmed by FSH level \>40mIU/mL. Male participants who have undergone vasectomy and have had testing to confirm azoospermia 90 days after procedure may also be included. The use of condom by male participant will be required if vasectomy is the chosen highly effective method of contraception. Male participants must also agree not to donate sperm throughout the study and for 95 days following the last dose of study drug. * Non-smoker, ex-smoker, or smoker willing to refrain from use of tobacco/nicotine-containing products, e.g., cigarettes, vaporizers, cigars, pipe tobacco, smokeless tobacco, nicotine gum, lozenges, patches, on more than 5 occasions within 1 month prior to the Screening visit and for the duration of the study. Note: a cotinine level or other observations that, in the opinion of the Investigator, suggest heavy use of tobacco will be exclusionary. * Willing to refrain from consumption of alcohol as follows: * Part A: for at least 48 hours prior to Screening and Day -1, then from Day 1 through End of Study (EOS). * Parts B and C: for at least 48 hours prior to Screening, Day -1, and Day 14, and from Day -1 through Day 7 visit, and from Day 14 through EOS (consumption of alcohol is permitted from Day 8 through Day 13). * Willing to withhold cannabinoids (including CBD and THC) and cannabis (including hemp) products for 60 days prior to administration of the first dose of study drug and throughout the study. * Willing to refrain from consumption of food or beverages containing xanthine derivatives or xanthine-related compounds (e.g., coffee, black/green tea, chocolate) or energy drinks from 48 hours prior to each clinic admission and each follow-up visit. * Willing to defer blood donations to a blood service for minimum of 30 days following the last dose of study drug. * Willing to comply with the study-specified diet while confined in the CRU. Participants in Part B (Food Effect Cohort) must agree to complete consumption of a standardised high-fat, high-calorie breakfast during the fed period on Day 15. * Willing to not operate a motor vehicle or heavy machinery for 7 days following administration of study drug. * In the opinion of the Investigator, is willing and able to comply with and understand study requirements and be available for the required study visits. Exclusion Criteria: * Female participant who is pregnant or breastfeeding, or planning to become pregnant or breastfeed during study participation. * Evidence of clinically significant abnormalities or disease, including, but not limited to, the following: * Any pulmonary, cardiovascular, neurologic, gastrointestinal, hepatic, renal, endocrine or other disease, at the discretion of the Investigator including, but not limited to, history of epilepsy. * Any history of gastrointestinal condition, including surgeries, or use of any medications (including glucagon-like peptide-1 \[GLP-1\] agonists) which may affect absorption or gastric motility after oral administration. * Has a lifetime history or current diagnosis of a significant psychiatric disorder including, but not limited to, schizophrenia spectrum or other psychotic disorders, major depressive disorder, or generalized anxiety disorder per Diagnostic and Statistical Manual of Mental Disorders 5th Edition (DSM-5), and/or has first-degree relative with a history of psychosis or schizophrenia. * Meets DSM-5 criteria for lifetime or current substance use disorder for any psychoactive substances other than nicotine or caffeine. * Has a history of, or active, suicidal ideation as identified by positive response to questions 4 or 5 on the Columbia-Suicide Severity Rating Scale (C-SSRS) at Screening, or has any prior history of suicidal behaviour, as evidenced by medical history of suicide attempt or a "Yes" response to the following suicidal behaviour questions on the C-SSRS: actual attempt, interrupted attempt, or aborted attempt. * History or ECG evidence of myocardial ischemia or infarct, 2nd or 3rd degree AV block, bundle branch block, with the exception of incomplete right bundle branch block in the absence of clinical heart disease, or multiple or multifocal premature ventricular contractions. * History of fainting or syncope that, in the Investigator's opinion, would interfere with study conduct or compliance. * Any other laboratory, vital sign, ECG abnormality, or clinical history or finding that, in the Investigator's opinion, is likely to unfavourably alter the risk-benefit of study participation, confound study results, or interfere with study conduct or compliance. * Positive urine drug test or alcohol breath test at Screening or Day -1 (and Day 14 for the Parts B and C), unless there is an explanation deemed acceptable by the Investigator and/or the participant tests negative upon re-test. Note: one re-test for drug screen is permitted per scheduled time point. No retest is permitted for alcohol breath test. * History of clinically significant allergy, hypersensitivity, or adverse reaction to cannabis or any cannabinoid, including dysphoria, or to any excipient in the investigational product (e.g., sesame allergy) at the discretion of the Investigator. * Donation or loss of greater than 1 unit (450 mL) of blood within the 4 weeks prior to Screening. * Has received any prescription medication within 14 days or 5 half-lives (whichever is longer) of Day -1 and throughout the study (exceptions: contraceptives are permitted). Prescriptions of known inhibitors or inducers of hepatic drug metabolism (e.g., rifampin, carbamazepine, phenytoin, barbiturates \[e.g., phenobarbital and butalbital\], dexamethasone, antidepressants \[e.g., fluoxetine, paroxetine\], proton pump inhibitors, ketoconazole itraconazole and clarithromycin) will be prohibited. * Has received any non-prescription medication within 5 days of Day -1 and throughout the study (exception: occasional \[PRN\] paracetamol \[up to 2 g/day\] or ibuprofen \[up to 1.2 g/day\] use may be permitted, at Investigator discretion). * Use of vitamins, natural and herbal remedies including St. John's wort, supplements (including kratom), or vaccines in the 14 days prior to Day -1 and throughout the study. * Use of any investigational drug within 30 days or \<5 half-lives, whichever is longer, prior to administration of first dose of study drug and throughout the study. * Consumption of grapefruit, starfruit, pomegranate, pomelo, pineapple, or Seville orange, products in the 7 days prior to Day -1 until completion of the EOS visit. * Regular alcohol consumption in excess of 14 units per week or 2 standard drinks in a single day. One standard drink is defined as containing 10 grams of pure alcohol, e.g., 285 mL normal-strength beer (4.9% alcohol), 100 mL of non-fortified wine (13% alcohol), or 30 mL of spirits (40% alcohol). * Behaviour suggestive of unreliability or inability to comply with study requirements per discretion of the Investigator. * Identified as a site employee of the Investigator or study centre, with direct involvement in the proposed study or other studies under the direction of that Investigator or study centre, as well as family members (i.e., immediate, husband, wife or de facto and their children, adopted or natural) of the site employees or the Investigator.
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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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Nucleus Network
Melbourne, Victoria, 3004, Australia
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