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This morning I read Carol Walton's posting on generics and was reminded that back in 6/96 I wrote a brief note on the same issue.Sad to say that I never could track down the FDA's Blue book or Red book or which ever book contained such a standard. And as I recall there was very little interest from the list at that time. Perhaps today? >6/09/96 George Lussier wrote: >"Did you know that a GENERIC drug maker is allowed to make his drug with >a leeway of 20%, more or less than the brand name drug. That means that you >may be getting 20% more or less of the primary ingredient when you shift >from the brand name to a Generic. AND if you shift from one generic to >another the difference could be as much as 40%!!! Do you believe it? I'm >trying to track down the chapter and verse via the FDA" > $$$$$$$$$$$$$$$$$$$$$$$$$$$$ At 10:05 PM 7/18/99 -0700, you wrote: >To Nigel: > >My name is Carol Walton and I am a member of the Parkinson Alliance >Executive Committee--I am usually silent on the listserv but I am catching >up on e-mail having just returned from the East--I was told by one of the >drug companies that there can be at 20% difference --plus or minus--when >different companies make generic drugs--therefore you could be taking a >brand name drug--switch to a generic and have a 40% difference--some >companies and now trying to set a standard since this can be devastating >especially with Parkinsons medications--I hope some others answer you also >since I am not an expert in any way shape or form--but I hope this helps and >you might run this by your pharmacist--good luck--carol walton > >