Is still the main use of hormone replacement therapy, but the result was due to consolidation, and certain side effects, not easily acceptable by the patients.
But Mr Bryant said he believed "all drugs are dangerous" and the long-term sideeffects of certain drugs, such as cannabis, were only now coming to light.
In some cases, as with the elderly, pregnant women and children, these older, cheaper drugs may be preferable because they are less likely to have certainsideeffects.
Wyeth is also developing another medicine to treat menopause symptoms and a new drug for osteoporosis, a treatment for the sideeffects of morphine, and an improved version of its Prevnar vaccine, which prevents certain bacterial infections in infants and toddlers.