About to go to Ulta or Walgreens and drop $50 on this -- based on overall good reviews on here and recommendation of saleswoman at Ulta who said they have trouble keeping it on the shelf. I just want to know if anyone has had (or heard of) any serious side effects -- e.g., falling hair. I can deal with nail issues, figure that green juices will keep potential acne in check and I'm not allergic to shell fish. Those are the only cons I've seen people report -- except for this one poster back in 2006 who said she heard about hair-fall. That was all I needed to see - screeeetch!