I think about two months ago, I ordered two tubs of PhD ISO-7 supplement and now, it is time to order again. Remember that I mentioned that I have a £15 voucher from Monster Supplement? I was wrong and it is actually a Maximuscle voucher. On the other hand, I saw an advertisement from another website offering discount on PhD supplement with free PhD Catalyst. Well, I assume that the PhD Catalyst is some kind of vitamins and fat busting supplements rather than slimming pills. Anyway, that left me with two choices; PhD plus PhD Catalyst or Maximuscle. Both of them seem to be a good deal and I might get both of them in the end.