hey there have been very few traces of stuff like ratscak in pills across the world-
i spoke to a dentist about this a while ago and the concerns were more about deregulating your immune system, dehydration affecting recovery.
when you take stuff it does deregulate your immune, system and generally wear you down anyway, so that combined with dehydration would affect your recovery considerably. i would suggest that if you are going to go and take stuff anyway that it is much less than you would usually take- just enough to get the affects.
alot of people forget about the amount of fun you can have with the subtle affects you get from taking small amounts of substances.
just enougn to keep you awake and dancing while not being so trashed you can laugh at your gurning mates and watch the funny faces they pull