← Back to Search

Alkaloid

Cytisine for Smoking Cessation

Phase 4
Recruiting
Led By Bernard Le Foll
Research Sponsored by Centre for Addiction and Mental Health
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Aged 18-65 years
Be older than 18 years old
Must not have
Have a serious unstable psychiatric or medical condition preventing participation in the trial. This includes some forms of schizophrenia, ischemic heart disease, heart failure, arterial hypertension (systolic BP above 150; diastolic BP above 100), cerebrovascular diseases, occlusion of blood vessels, kidney and/or liver disease, hyperthyroidism, ulcer, diabetes, Chromaffin tumours of the adrenal medulla, and gastroesophageal reflux disease (GERD)
Timeline
Screening 3 weeks
Treatment Varies
Follow Up this period will end at the end of treatment (day 25) or at final follow-up.
Awards & highlights
Pivotal Trial
Drug Has Already Been Approved

Summary

This trial studies the safety and effectiveness of a drug to help people with alcohol use disorder quit smoking. #smokingcessation #alcoholud

Who is the study for?
This trial is for adults aged 18-65 who smoke daily, want to quit within the next month, and have a tobacco use disorder as well as an active alcohol use disorder. They must be willing to follow study rules and not have serious health issues like certain heart diseases, severe psychiatric conditions, or be pregnant.
What is being tested?
The trial is testing cytisine's ability to help people stop smoking compared with a placebo (a substance with no therapeutic effect). Participants will either receive cytisine or the placebo while their progress in quitting smoking is monitored.
What are the potential side effects?
While specific side effects of cytisine are not listed here, common ones may include nausea, headache, dry mouth, and trouble sleeping. Side effects can vary from person to person.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
Select...
I am between 18 and 65 years old.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
Select...
I do not have any severe mental or physical health issues that would stop me from joining the trial.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~this period will end at the end of treatment (day 25) or at final follow-up.
This trial's timeline: 3 weeks for screening, Varies for treatment, and this period will end at the end of treatment (day 25) or at final follow-up. for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Frequency and type of adverse events
Rate of retention in the trial: number of sessions completed for each participant and number ofparticipants who withdraw
Secondary study objectives
Continuous Abstinence
Nicotine Craving in Participants
Nicotine Withdrawal Symptoms in Participants
+5 more
Other study objectives
Tertiary Endpoints to evaluate the impact of cytisine vs. placebo on Quality of Life.
Tertiary Endpoints to evaluate the impact of cytisine vs. placebo on anxiety.
Tertiary Endpoints to evaluate the impact of cytisine vs. placebo on drinking by collecting the number of drinking days in participants.
+3 more

Side effects data

From 2019 Phase 2 trial • 254 Patients • NCT03709823
14%
Abnormal dreams
8%
Insomnia
6%
Nausea
4%
Fatigue
4%
Upper respiratory tract infection
2%
Anxiety
2%
Headache
100%
80%
60%
40%
20%
0%
Study treatment Arm
3.0 mg Cytisine, Commercial Schedule
1.5 mg Cytisine, Commercial Schedule
Placebo, TID Schedule
1.5 mg Cytisine, TID Schedule
3.0 mg Cytisine, TID Schedule
Placebo, Commercial Schedule

Awards & Highlights

Pivotal Trial
The final step before approval, pivotal trials feature drugs that have already shown basic safety & efficacy.
Drug Has Already Been Approved
The FDA has already approved this drug, and is just seeking more data.

Trial Design

2Treatment groups
Experimental Treatment
Placebo Group
Group I: CytisineExperimental Treatment1 Intervention
Cytisine will be given as 1.5 mg tablet formulations for 25 days. The following treatment schedule will be followed: * Days 1 to 3: 1.5 mg taken every 2 hours (6 pills (9 mg)/day) * Days 4 to 12: 1.5 mg taken every 2.5 hours (5 pills (7.5 mg)/day) * Days 13 to 16: 1.5 mg taken every 3 hours (4 pills (6 mg)/day) * Days 17 to 20: Taper down to 1 tablet every 5 hours (3 pills (4.5 mg)/day) * Days 21 to 25: Taper down to 1-2 tablets daily (1.5-3 mg/day)
Group II: PlaceboPlacebo Group1 Intervention
Placebo will be given following the same schedule as the Cytisine Arm.
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Cytisine
2017
Completed Phase 4
~3020

Find a Location

Who is running the clinical trial?

Centre for Addiction and Mental HealthLead Sponsor
368 Previous Clinical Trials
82,988 Total Patients Enrolled
26 Trials studying Tobacco Use Disorder
4,346 Patients Enrolled for Tobacco Use Disorder
Bernard Le FollPrincipal InvestigatorThe Centre for Addiction and Mental Health
1 Previous Clinical Trials
16 Total Patients Enrolled

Media Library

Cytisine (Alkaloid) Clinical Trial Eligibility Overview. Trial Name: NCT05729243 — Phase 4
Tobacco Use Disorder Research Study Groups: Cytisine, Placebo
Tobacco Use Disorder Clinical Trial 2023: Cytisine Highlights & Side Effects. Trial Name: NCT05729243 — Phase 4
Cytisine (Alkaloid) 2023 Treatment Timeline for Medical Study. Trial Name: NCT05729243 — Phase 4
~17 spots leftby Nov 2025