Robert Medhurst has done a brilliant job in bringing together an impressive number of scientific studies that have been made into homeopathy. As he says, however, it is not exhaustive.
Have a look here for his list
Hitherto, homeopaths have always relied on more direct evidence for its effectiveness - sick people getting well after treatment. ConMed has never accepted the evidence. And predictably it is unlikely to accept any amount of scientific evidence. But for anyone with an open mind, the amount of research that has been conducted, and the results, are impressive.