Cyclogest is named as an intervention in 3 current clinical trials in our UK, Denmark and Portugal registers. 2 are recruiting patients now. The most common phase is Phase 4. The sponsor with the most trials is Calla Lily Clinical Care Ltd (1). The most-studied condition is Luteal Phase Insuffiency.
| Study | Phase | Status | Lead sponsor | Registers |
|---|---|---|---|---|
|
Progesterone Supplementation After Letrozole-stimulated Insemination
NCT07508657 · ClinicalTrials.gov ↗ · Infertility
|
Phase 4 | Recruiting | Kirstine Kirkegaard | Denmark |
|
First in Human Safety and Ease of Use Assessment of 400mg Progesterone Callavid in Women With Luteal Phase Insufficiency
NCT07136922 · Luteal Phase Insuffiency, Progesterone Delivery
|
Phase 1 | Recruiting | Calla Lily Clinical Care Ltd | UK |
|
Exogenous Progesterone as Ovulation Trigger
NCT07466199 · ClinicalTrials.gov ↗ · Ovulation, Ovarian Function, Assisted Reproductive Treatments
|
Phase 4 | Not yet open | Instituto Valenciano de Infertilidade de Lisboa | Portugal |
Registers list studies that are recruiting, about to open, active but closed to enrolment, or enrolling by invitation. The UK and USA registers cover industry-sponsored studies only. Trial titles and statuses are copied from the registry as published.
| Lead sponsor | Trials |
|---|---|
| Calla Lily Clinical Care Ltd | 1 |
| Kirstine Kirkegaard | 1 |
| Instituto Valenciano de Infertilidade de Lisboa | 1 |
| Register | Trials | Recruiting |
|---|---|---|
| Clinical trials in UK | 1 | 1 |
| Clinical trials in Denmark | 1 | 1 |
| Clinical trials in Portugal | 1 | 0 |
A trial with sites in more than one country appears in each of those registers.
3 current trials in our UK, Denmark and Portugal registers name Cyclogest as a drug or biological intervention, as of the registry sync on 27 September 2026. Completed and withdrawn studies are not counted.
Yes. 2 of the 3 trials are recruiting: 1 with sites in UK and 1 with sites in Denmark. Eligibility and site contacts are on each trial's record. Only the study team can confirm whether a patient is eligible.
Calla Lily Clinical Care Ltd (1), Kirstine Kirkegaard (1) and Instituto Valenciano de Infertilidade de Lisboa (1). The number in brackets is how many trials each organisation leads.
Every trial, status, phase and sponsor on this page is copied from public ClinicalTrials.gov records by a daily sync. Nothing here describes how Cyclogest works or whether it is effective, and it is not medical advice.
Everything on this page is copied from public ClinicalTrials.gov registry records — it is not written from memory, and nothing here describes how Cyclogest works or whether it is effective. Each trial links to its own record so you can check it yourself.
This page is built automatically: a daily sync job reads the registry records behind our country trial registers, collects every trial that lists Cyclogest (or a registered synonym) as a drug or biological intervention, and tabulates the registry fields directly. Placebos and generic comparators are excluded. There is no AI drafting and no per-compound editorial pass, and the page has not been clinically reviewed. The “last verified” date above is the timestamp of that sync, not a review date. Our general editorial approach is described in our editorial standards and corrections policy. The ClinicalTrials.gov data on this page was last retrieved on 27 Sep 2026.