It would have be nice if the trial ran for longer because I think for most people the product is still in an 'active' regrowth phase (not just a maintenance phase) for quite a while, but it's pretty clear that they ran it for long as they could all things being equal (plus they got such good results 3 months in across the group!). I didn't get those results as quickly, but my hairloss wasn't bad and it was is not of a shedding variety.
Nisim is a brilliant product.