Can garlic and enzymes make menopause hormones safer?
NCT ID NCT02618148
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested whether adding natural ingredients like garlic oil and nattokinase to standard hormone replacement therapy (HRT) could reduce the risk of blood clots in menopausal women. The trial involved 60 women divided into premenopausal and postmenopausal groups. Researchers measured how quickly estrogen levels rose to see if the combo was safer than HRT alone.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Hormone replacement therapy (estradiol and progesterone) combined with garlic oil and nattokinase
- What this could lead to
- If successful, this could point toward a safer way to use hormone therapy for menopause symptoms by lowering the risk of blood clots.
- What could go wrong
- This is a small, early-phase study with only 60 participants, so results may not apply to everyone. The combination's safety and effectiveness need much larger trials to confirm.
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
-
Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
-
60 people
The number who actually took part.
- Started
-
Jan 2009
- Finished
-
Jun 2015
- Lead sponsor
-
An individual researcher
The lead sponsor is a named person rather than an organisation.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
35 to 65 years
- Sex
-
Female participants only
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Hormone replacement therapy (HRT) for oestrogen deficiency symptoms in perimenopausal and postmenopausal women. * Prevention of osteoporosis in postmenopausal women at high risk of future fractures who are intolerant of, or contraindicated for, other medicinal products approved for the prevention of osteoporosis. Exclusion Criteria: * Known, past or suspected breast cancer; * Known or suspected oestrogen-dependent malignant tumours (eg endometrial cancer); * Undiagnosed genital bleeding; * Untreated endometrial hyperplasia; * Previous or current venous thromboembolism (deep venous thrombosis,pulmonary embolism) * Known thrombophilic disorders (eg protein C, protein S, or antithrombin deficiency, see section. * Active or recent arterial thromboembolic disease (eg angina, myocardial infarction); * Acute liver disease, or a history of liver disease as long as liver function tests have failed to return to normal; * Known hypersensitivity to the active substances or to any of the excipients;
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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
-
Saigon Biopharma Company Limited
Ho Chi Minh City, 700000, Vietnam
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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