Ed, the two have completely opposite energies to them. IMO it would be like taking an upper with a downer. Have you used ASH or amphetamines before, or are you just speculating on what the effects would be?
Chris, I totally agree there. I keep statistics as well and keep a fairly regular diet (cashews, almonds, blueberries, the same turkey sandwich on whole wheat every day, oatmeal for breakfast, and so on), but I do eat different things each day, especially for dinner and lunch. One thing I've learned is that no matter what my regimen is, it's nearly impossible to feel the same way each and every day. I believe if we ate exactly the same food at the same time, each and every day, we'd still experience different feelings and effects from day-to-day, which is somewhat disappointing. There's so many variables.
I've been lucky in that I've felt amazing for the three days since taking taurine/theanine, and I took more theanine last night, and I woke up nearly singing to myself today. However around 7 pm tonight I felt very shaky (not something normal for me), so I ate as much of a diversity of food as possible to quell these effects. Those feelings went away, but mild tension headaches ensued. I don't know if these are due to taurine (took on Tuesday), theanine (took on Tuesday and Thursday), or a combination of taurine, theanine, and the cordyceps I took earlier in the week (on Monday, though I get stimulating effects lasting a week after use). Which gets me back to Ed's question. Using stimulating substances with relaxing substances can produce some weird, unpleasant effects. I decided after arriving home tonight that I'd try chamomile tea for the first time. I've been trying to find something to get me out of this stimulation I've been experiencing since using cordyceps five days ago (my mood's been great, so I can't complain, but it seems to be overpowering and conflicting with the effects of relaxants like theanine and taurine). The chamomile seemed to relax me and help in general, though it wasn't really an anxious feeling to begin with, just an uneasy one. Something as simple as not eating complex carbs with tryptophan-based foods may cause the tryptophan to convert to melatonin, for example, instead of serotonin, producing a very different effect after eating the same food source.
It's hard to know what's going to affect what, that's why keeping a log is important. I've been doing so for the past five years, and it's convenient to pull up information from the past. It's not a tell-all, but it helps in putting the pieces of the puzzle together. In the meantime I'll be trying these three substances on their own to see what the issue is. At this point I'm guessing it's the cordyceps, so I'll be refraining from it while using theanine and taurine in the future.
BTW (completely off topic), I've heard a lot of great things about Malta. It seems to be a pretty unique place to live with a lot of history.