Weight loss surgery may weaken birth control pills: new study investigates
NCT ID NCT06345560
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study examines whether bariatric surgery changes how the body absorbs drospirenone-only birth control pills in obese Thai women. Sixteen women will take the pill before and after surgery, and researchers will measure drug levels in their blood. The goal is to see if the surgery affects the pill's effectiveness, helping guide contraceptive choices for women undergoing weight loss surgery.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
drospirenone (a hormone-only birth control pill)
What this could lead to
If successful, this study could help doctors know if obese women who have bariatric surgery can still rely on drospirenone-only pills for contraception.
What could go wrong
This is a very small, early-phase study (16 people) that only measures drug levels, not actual pregnancy prevention. Results may not apply to other populations or birth control types.
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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Chulalongkorn University
RECRUITINGBangkok, 10330, Thailand
Contact