I'm not sure I understand the question[0] fully but thalidomide? https://en.wikipedia.org/wiki/Thalidomide https://en.wikipedia.org/wiki/Thalidomide "Thalidomi

I'm not sure I understand the question[0] fully but thalidomide? https://en.wikipedia.org/wiki/Thalidomide https://en.wikipedia.org/wiki/Thalidomide "Thalidomide is provided as a racemic mixture of two enantiomers; while there are reports that only one of the enantiomers may cause birth defects, the body converts each enantiomer into the other through mechanisms that are not well understood." [0] because a racemic mixture (https://en.wikipedia.org/wiki/Racemates https://en.wikipedia.org/wiki/Racemates) is a 50/50 mix of enantiomers: "In chemistry, a racemic mixture, or racemate [...] has equal amounts of left- and right-handed enantiomers of a chiral molecule" so if you took a racemic mixture surely you'd be getting a combination of the enantiomers' effects?