We did a fair amount of work investigating claims support for potential homeopathic products at my former job. While certainly lacking the types of gold standard studies we are accustomed to in OTC/pharma land, there were at least a few somewhat compelling studies. But as I recall, most suffered from typical flaws with respect to powering, outliers, etc. Still, it was enough for me not to think of it as hokum. But I remain a skeptic.