Which progesterone form is best for IVF? new study aims to find out
NCT ID NCT07461909
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two common forms of vaginal progesterone—soft capsules and pessaries—used during frozen embryo transfer. Researchers want to see which one women find more satisfying, convenient, and tolerable. About 400 women will use one of the two forms and report their experiences through online surveys. The study also checks hormone levels and pregnancy outcomes, but its main goal is to understand patient preferences.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
vaginal progesterone
What this could lead to
If successful, this could help doctors and patients choose the more convenient and tolerable progesterone formulation for frozen embryo transfer, potentially improving the experience.
What could go wrong
This is an observational study, not a randomized trial, so results may be influenced by patient or doctor preferences. It does not test a new treatment, only compares existing options.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Instituto Valenciano de Infertilidade (IVI Lisboa)
RECRUITINGLisbon, 1800-282, Portugal
Contact Phone: •••-•••-•••• Email: •••••@•••••