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Actonel is used to treat and prevent osteoporosis in postmenopausal women. It is also prescribed to increase bone mass in men with osteoporosis. 

Full prescribing information is available at:


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About the Author
Joe Graedon is a pharmacologist who has dedicated his career to making drug information understandable to consumers. His best-selling book, The People’s Pharmacy, was published in 1976 and led to a syndicated newspaper column, syndicated public radio show and web site. In 2006, Long Island University awarded him an honorary doctorate as “one of the country's leading drug experts for the consumer.” .
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I’m 65 years old and have been on weekly Actonel for over 3 years. Two (2) months ago my doctor switched me to monthly Actonel. Twenty-four (24) hours after taking Actonel, I get severe worsen of my diverticulosis (cramping, frequent stools leading to watery ones, extreme tiredness, etc). This lasts for 24 to 48 hours. When I phoned by doctor, her nurse said my doctor would call back. I got a call back from the receptionist saying the doctor wanted me on IM/IV Actonel. Does anyone know anything about the possible side effects of this method?

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