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Progesterone for transgender women

Effect of micronised progesterone on sleep in transfeminine individuals: a prospective case-control study

Status
Not yet recruiting
Phases
Phase 4
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12620001130954
Enrollment
38
Registered
2020-10-30
Start date
2020-11-04
Completion date
2021-09-30
Last updated
2020-11-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Transgender individuals seeking feminisation (transfeminine individuals) are treated with estrogen and anti-androgen (testosterone blocker) to align their physical appearance with their gender identity. There has been increasing interest in the potential use of progesterone for transfeminine individuals, given anecdotal reports of improved mood and breast development. This project is a trial of micronised progesterone in transfeminine individuals treated with estradiol therapy. We aim to establish the influence of progesterone on sleep, psychological distress and breast development.

Interventions

Micronised progesterone 100mg, oral capsule, daily for 3 months Adherence monitored through unused product return Group allocation is determined by participants' choice

Sponsors

Austin Health
Lead SponsorHospital

Study design

Allocation
Non-randomised trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

Transfeminine individuals aged 18-70 years treated with estradiol for at least six months.

Exclusion criteria

1. Contraindications to micronised progesterone. 2. History of orchidectomy. 3. Sunflower seed allergy. 4. Known, suspected, or history of breast cancer. 5. Active deep vein thrombosis, pulmonary embolism or history of these conditions. 6. Active arterial thromboembolic disease or history of these conditions. 7. Known liver dysfunction or disease. 8. Recreational drug use, alcohol dependence, known HIV/AIDS or any disease that is likely lead to serious illness or death within the study period. 9. Inability to understand sufficient English to provide informed consent or participate in the trial.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026