← Eichor
Study identifier: NCT07136922 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

First in Human Safety and Ease of Use Assessment of 400mg Progesterone Callavid in Women With Luteal Phase Insufficiency

Condition: Luteal Phase Insuffiency · Progesterone Delivery  ·  Sponsor: Calla Lily Clinical Care Ltd

PhasePhase 1
Planned participants20
Who can joinFemale, 18 Years to 45 Years
Healthy volunteersNo

About this study

The aim of this clinical trial is to assess safety of a new vaginal 400mg progesterone drug-device combination product in a first in human trial. Additionally, it aims to assess user acceptability and ability to deliver progesterone. This Phase I trial is a randomised open-label first-in-human crossover trial, recruiting participants who are non-pregnant with luteal phase insufficiency. The main questions it aims to answer are: 1. What are the safety and tolerability profiles of the two progesterone formulations (400mg Progesterone Callavid vs. Cyclogest 400 mg), including the incidence of adverse events (if any) such as allergic reactions, gastrointestinal symptoms (e.g. bloating, constipation), and neurological effects (e.g. headache, drowsiness, euphoria)? 2. What is usability experience for patients using the Callavid drug-device combination compared to pessaries / suppositories (i.e. Cyclogest 400 mg)? 3. How do serum progesterone levels vary within participants when using 400 mg progesterone delivered via the Callavid drug-device combination compared to Cyclogest 400 mg, and what are the implications of this variability for dose-response relationships and future trial design?

This description comes directly from the study's public registry record.

Talk to the study team

Siobhan Quenby  ·  +442476964000  ·  s.quenby@warwick.ac.uk

Always discuss trial participation with your own doctor first.

Locations (1)

University Hospitals Coventry & Warwickshire NHS TrustCoventry, United KingdomRecruiting

Follow this study

Get one email when the public record changes — results posted, or the study's status changes. Nothing else, ever.

We email about this public record only. Unsubscribe anytime with one click. Never medical advice.

Is this your study? This page was generated automatically from the public registry record. Sponsors can claim it — free — to add branding and verified contact routing. Claim this page →

This page is independently generated by Eichor from the public ClinicalTrials.gov record and re-synced daily. It is not the sponsor's official website unless claimed. Nothing here is medical advice; eligibility is always determined by the study team — talk to your own doctor first.

Source record: clinicaltrials.gov/study/NCT07136922