Unemployment (like someone has already said) will be a big problem... Even if the maximum age stops at 70 (like here, although at 65 with can go and say I'm an oldie and we have to pay him/her a misery of a payment for being old), your body wont be that good... And the problem of aging is that the DNA has molecules (or enzimes if you like it more) that corrects it from it's use... You know, a DNA molecule that has already been multiplied 20 times, won't be as good as a new DNA molecule... Mutations, errors, etc. cause this...
So, having a medication that stops it, and slows it down... Hmmmmmmmm, you know, there's something fishy here, how are you supposed to have new cells to regenerate the skin, or even producing sperm or ovules? I'll say fake until I see the results with these very eyes