In my experience, "clinically proven" carries much more weight. The expression "clinical trials" is the accepted way to describe scientifically designed and vetted studies of new medications and medical procedures -- at least in the US. I don't hear the expression "medical trials" used.
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AnonymousWhat's the difference between "Clinically proven" and "Medically proven"?These terms are used interchangeably. Some medical magazines write as Clinically proven drugs and
AvangiI don't hear the expression "medical trials" usedI too haven't heard about the expression "Medical Trials" as of now.