Women are being warned about shortages of some hormone replacement therapy products, the BBC reports.

More women are turning to HRT to manage menopause, and demand has led to an estrogen patch shortage.

Pharmacists in some areas have been told to ration the medication amid the national shortage.

Some women say they have been forced to switch brands or go without.

Switching products can bring back menopause symptoms women thought were behind them.

Patch manufacturing is complex and capacity is limited, so producers could not keep pace.

Generic medicine manufacturers are ramping up patch supply to meet demand, industry publications report.

Patient advocates want clearer updates on which products are affected.

Read the full article for more details on the HRT shortages.