I used to take amino acid tablets and Glutamine in powder form. The amino tablets seem a bit old fashioned these days and I don't hear of many people taking them. The Glutamine is just one of the 22 amino acids which was hyped as 'the' amino acid a few years ago.

All I take now is;

Vitamin C; 4 x 500mg
Cod liver; 4 x one a day tablets
Protein Powder - currently using MetRX

Have used eph tablets for fat loss before and that was pretty good. And use creatine on and off although I don't see the benefits I used to.