I've been trying to find the earliest recorded medicinal use of urine as a medicine or for drug derivations and in more particular the earliest recorded useage of the derivative of urine from pregnant large mammals used for its hormonal estrogenic properties. I had heard of the recipe as a kid but never knew. It was drinken with milk or honey water usually. (The "pill" changed all that.)

Uses for Urine: The Remarkable Properties and Practical ...

Nov 1, 2009 ... Probably the first hormonal birth control was made in ancient China from urine.

Urea, a major compound of urine, was used in the early 19th ...

http://mary-earhart.suite101.com/uses-for-urine-a164730