The Indigo Study

Currently Recruiting

16 Sep 2026

Up to $4,200

Brisbane, Australia

This study is looking at an investigational oral drug for people living with obesity or overweight. 

Obesity is a chronic disease that is estimated to affect ~880 million adults globally.  Adults living with obesity and overweight are at higher risk for other health problems. For some people, medicines are recommended to support weight management; however, more treatment options are needed to treat this chronic disease.  The investigational drug is an oral tablet that is designed to help people feel full sooner and reduce feelings of hunger, which may help people eat less over time. 

Apply now Speak with us 1300 343 113

Join our clinical trial

This is a first-in-human (FIH) study, meaning it is the first time the investigational medicine is being tested in people. The study has been carefully designed with strict safety protocols and has been reviewed by an independent ethics committee. It is not known whether the investigational medicine may cause unexpected, serious, or life-threatening side effects. While these are considered unlikely, you will be carefully monitored throughout the study and provided with prompt treatment if any such effects occur. 

Before joining, you’ll receive detailed information about the study, meet with a doctor, and have the chance to ask any questions. 

What to expect

  • Participation in a monitored clinical environment 
  • Support from a professional medical team 
  • Compensation for your time and commitment will be provided to participants who complete the full study 

Study schedule

 

Intake 1 In-clinic stay:

16 September 2026 –20 September 2o26

 Follow-up visits:

23 September 2026 – 16 October 2026
Approx. 5 visits during this period
Intake 2 In-clinic stay:

30 September 2026 –4 October 2o26

 Follow-up visits:

7 October 2026 –30 October 2026
Approx. 5 visits during this period

Study dates are subject to change. Our team will confirm details with you during the screening process.

Trial details

Study duration

  • 4 night inpatient stay
  • 5 follow-up visits

Study medication

The study drug or placebo will be given as an oral tablet

Additional eligibility

  • Stable body weight (≤5% change within 3 months) 
  • Non-smoker, or smoking 10 or less cigarettes (or equivalent) per day, and agrees to abstain for the duration of the study  
  • Not pregnant or breastfeeding   
  • Willing to follow contraception guidelines (If applicable)  
  • Willing and able to attend all study visits and follow instructions 
  • Other eligibility criteria apply     

Ethics

An independent ethics committee has approved this clinical trial.

Are you a match?

Age

18 - 60 years old

Remuneration

Up to $4,200 *with screening reimbursement.
Full details outlined in consent form.

Gender

Male, Female, Female (Post-menopausal) or Female of non-childbearing potential

BMI

BMI 25 - 35 kg/m2

Commitment

4 nights, 5 clinic visits

Medical condition

Not taking any medications

Register your interest

This form takes around 3–5 minutes to complete. Your information will remain confidential and is used only to assess your eligibility for current or future research studies.
Step 1 of 3
Contact Information




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Nucleus Network does not currently conduct clinical trials in your state. If you would like to receive study information should this situation change, please complete and submit this form.
Personal Information

This includes registering your interest with the Centre for Clinical Studies, Q-Pharm or Nucleus Network

Please call us on 1800 243 733


What is your date of birth?
Day Month Year

You need to be at least 18 years old to participate in clinical trials.


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Step 2 of 3
Medical History

We regularly have studies that allow participants who are (social) smokers.

We define an allergy as severe if symptoms include mouth/throat/face swelling, shortness of breath or a whole-body rash, or if it required hospitalisation

We regularly have studies that allow for/require participants with asthma.



We regularly have studies that allow for/require participants with medical conditions.

Medications & Contraception Requirements

We regularly have studies that allow participants with depression that is well-managed on a stable dose of medication.

If the only prescription medication you currently use is hormonal contraception and/or Ventolin, please select No above. We regularly have studies that allow for participants who take a stable dose of prescription medication.


  • Abstinence from sex with anyone of the opposite sex for at least 2 months
  • Using a condom + your female sexual partner(s) using a separate form of birth control
  • You or your sexual partner(s) had a vasectomy/hysterectomy
  • Your sexual partner(s) are post-menopausal


Only you taking birth control or your partner(s) using a condom is not an acceptable option, but using both together is. The morning after pill is not an acceptable form of birth control.

  • Abstinence, by choice, from sex with anyone of the opposite sex for the last 2 months + remaining abstinent for at least 2 months after study participation
  • You using birth control + your male sexual partner(s) using a condom
  • You or your sexual partner(s) had a hysterectomy/vasectomy
  • You are post-menopausal



Step 3 of 3
Study Preferences

While longer studies generally have a higher reimbursement, there are also studies with multiple short stays that have high reimbursements.
Referral Information


Consent to Information Use and Future Contact