I just take this for general well-being and optimal performance (both water-soluble):
* 1 All-In-One pill (vitamins + minerals)
* Occasionally: 1 pill of extra-strong vitamin C (1g = ~1700% of "RDI") whenever the flu is going on around me or I just feel tired - works fucking great!
Check out
http://www.cforyourself.com/ if You feel like reading up a bit extra on vitamin C.