Neil, I don't want to preach but my honest recommendation would be to avoid spending too much money and time on supplements. This is because a) each time you try something new it encourages you to continually focus upon the body to see how you're reacting ("Is it working yet? What if it makes me worse?"), b) researching supplements drags you into the online world of bleak and discouraging lab reports about sub-clinical deficiencies and obscure biological problems, not to mention CFS pessimists c) sticking to the schedule of taking more and more pills at the right times only adds to stress and d) it can cost an absolute fortune!
For years I made ALL of those mistakes, and I wish someone had given me this advice right at the start. Yes, the occasional supplement gave me a temporary boost (megadoses of vit C and B12 for energy, magnesium for sleep), but it never lasted and I ended up feeling dependent upon these things.
If you've already had tests and they point to specific requirements, by all means take what's medically advised, but I would urge you not to get sucked down the path of anything more than basic self-supplementation. As I once read - it's what you DO, not what you TAKE, that will make you better. I'm a battle-hardened CFS cynic who's taken probably over 100 different types of supplement, but only Ashok's approach is REALLY helping.
But of course, everyone's different
