Women going through the menopause are facing a national shortage of hormone replacement therapy (HRT).
Many of the most commonly prescribed forms of HRT, which helps deal with the symptoms of the menopause, are out of stock in some pharmacies.
The Department for Health and Social Care said it was aware of "ongoing supply issues" due to "manufacturing delays".
A spokesperson said alternative HRT products were available.
Affected patients should discuss alternatives with their doctor, they said, adding that the government was working closely with suppliers to "maintain the overall flow of medicines to patients".
Several women have told to the BBC how they have been affected, with one saying she feels "absolutely devastated" and another suffering "considerable discomfort and distress".