Estrogen patches are in short supply as demand for the menopause medications skyrockets, and it could take at least a year for manufacturers to catch up. Prescriptions of estrogen patches have increased 162% over the past two years, according to data from HealthVerity. Already rising demand was turbocharged last fall when the Food and Drug Administration removed a more than 20-year-old black box warning discouraging women from taking hormone replacement therapy. Manufacturers are struggling to