Educational information, not medical advice — ask your doctor or midwife.
What is Menerba?
Menerba is an experimental plant-based drug. It was made to ease hot flashes and night sweats in menopause. It was never approved for sale anywhere.
A US company, Bionovo, developed it in the 2000s. Its lab name was MF101. The formula blended extracts from 22 herbs used in Chinese herbal practice.
The evidence verdict: one mid-stage human trial found a small benefit over a dummy pill. No larger trial confirmed it. Long use of the single herbs is not proof that this blend works or that it is safe.
How is Menerba thought to work?
Menerba was built to act on one type of estrogen receptor. Receptors are docking points on cells that hormones switch on. The target was the beta receptor, which is less tied to growth in breast and womb tissue.
In lab studies, a compound in the mix called liquiritigenin switched on beta receptors much more than alpha ones. The aim was relief of hot flashes without the cancer risk linked to standard hormone pills.
That idea was never proven in people. The single human trial tracked symptoms only. Whether the blend is truly safer than hormone therapy is not known.
What forms does it come in?
There is no licensed form. Menerba is not sold as a medicine in any country.
The trials used an extract taken by mouth, as a liquid or powder. It was given under medical care, with blood tests along the way.
The owning company closed in 2012 and work stopped. Anything offered online as Menerba today is of unknown source, strength and purity.
Where does it come from?
Menerba is a modern lab product, not an old folk remedy. Researchers screened plant extracts for activity on beta estrogen receptors, then combined the ones that scored well.
The herbs behind it do have deep roots. Chinese herbal practice used several of them, in other mixes, for complaints we would now call menopause symptoms. Heat, sweating and broken sleep were among them.
Those historic mixes were not this mix. The name Menerba belongs to the 2000s drug programme and to nothing older.
When to see a doctor
Stop and get urgent care if you notice:
- Yellow skin or eyes, dark urine, or pain in the upper right belly. - Swelling of the lips, face or throat, or trouble breathing. - Chest pain, a one-sided leg swelling, or sudden shortness of breath. - An irregular heartbeat (arrhythmia), or faintness.
Book a normal appointment if you get any vaginal bleeding after menopause, a new breast lump, or hot flashes that are getting worse. Tell your doctor about any herbal product you have taken.
Menerba is not an approved medicine in the United States, the United Kingdom, the European Union or Australia. In the US it was handled as an investigational drug, which means trials only, never sale. It is also not a lawful dietary supplement under that name, so anything marketed as Menerba is an unregulated product.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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