How Were GMPs Developed?

	Overview
	Why do GMPs exist?
	How were GMPs developed?
	How GMPs change
	How do GMPs of different countries compare?
	Is there an effort to make one, "universal" set of GMPs?

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Originally, GMPs were based upon the best practices of the industry. As technology and practices improved, the GMPs evolved as well. In the U.S., drug cGMPs were formally introduced in 1963 and significantly rewritten in the 1970’s. Canadian drug GMPs exist in various forms in the 1950’s-1970’s before being published in their current form in the 1980’s. (For more information, please read "Why Do the GMPs Exist?")