Can a Sugar-Like supplement boost fertility in PCOS?
NCT ID NCT04407754
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tests whether adding a myo-inositol supplement to the standard fertility drug letrozole helps women with polycystic ovary syndrome (PCOS) achieve pregnancy. About 168 women will receive either the supplement or a placebo alongside letrozole for up to 5 treatment cycles. The goal is to see if the combination leads to more clinical pregnancies.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- myo-inositol and D-chiro inositol supplement
- What this could lead to
- If it works, this could offer a simple, low-cost supplement to boost pregnancy chances for women with PCOS taking letrozole.
- What could go wrong
- This is a small pilot trial, so results may not be definitive. The supplement might not improve pregnancy rates over letrozole alone.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
168 people
The number who actually took part.
- Started
-
Feb 2022
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 36 years
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Female patient age 18-36 * Desire for pregnancy * Diagnosis of oligo- or anovulation secondary to polycystic ovary syndrome -All subjects must have ovulatory dysfunction and at least one of the remaining two criteria:hyperandrogenism or polycystic ovarian morphology on ultrasound * At least one patent fallopian tube * Normal uterine cavity * Male partner with sperm concentration of at least 14 million/mL in at least one ejaculate. Exclusion Criteria: * Cause of anovulation other than PCOS such as uncontrolled thyroid dysfunction or hyperprolactinemia * Presence of another major infertility factor * Diabetes * Contraindication to pregnancy * Myo-inositol use \< 3 months prior to study enrollment * Concomitant metformin use. Previous use is allowed with last use at least 6 weeks prior to randomization.
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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
Locations
-
OUHSC Reproductive Medicine Clinic
Oklahoma City, Oklahoma, 73104, United States
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