Is there motivation to cheat? If I want to sell this stuff what's to stop me from signing up a bunch of people, having the pills tested, then reporting what I want you to find so I that you'll tell the public my product is effective?
This won't be an issue because we are supplying the supplements which are going to come from an established and reputable supplier. This is not a platform where anyone can sell their own supplements.
I think you missed my point. I sign 100-1000 people up for your study. You send the supplements to them. I quickly test the supplements to find out which is which. I then send you a report that makes the days my people took the supplements look positive for efficacy. You then report the supplements are effective. I can now point to your report to sell my supplements. It doesn't matter they are not your supplier. I still benefit from people thinking a supplement is effective.