I am not trying to be a curmudgeon, but one needs to take some of these one at a time, and consider it not a binge to accomplish everything at once but a learning experience, to be pursued for some years. We are talking about creating healthy habits for life. Or if not, then yes, just down a handful of pills and wish away the blues. That also is a strategy. I have issues with a few things, all of which I have personally assayed, so I speak from personal experience.
ltyrosine=profoundly effective useful precurses to dopamine - much more effective than ldopa from the inexpensive mucuna pruriens - but the additional dopamine is not euphoric but emotive and often increases my anger along with my will to act. Also, I get swollen body parts - eyes, feet, ankles, more.... If you use this then I recommend it once or twice a week, or if daily then a very minor dose. You should try this alone so you get a feel for the increased dopamine body ambience before you go into something like selegiline where the effects last some 22 days due to irreversable MAOI B. I haven't tried selegiline but I am about to ask my pdoc about it due to its neuroprotective and antioxidant qualities. It sounds reallly awesome. But I also take mirtazapine and lithium and don't know if they will work together.
Lecithin is really a decent product - it helps rid the body of fat and provides acetylcholine which is an important neurochemical, as you know by now, even if you aren't using the racetams.
Racetams - these made me grumpy, and after a week made me feel emotionally imbalanced. Even though they sound awesome, I would discourage people from them. Nowhere have I read glowing reports about them. The experiences tend to fall into the humdrum category. There have been no US based research into them. We also know that Russians were previously Machavells who killed their geniuses and therefore they have little of real science to add. No offense Russians but part of your country is still radioactive - with people still living in it. And the rest of your country is now controlled by mafia. It's a hard life - the racetams haven't bettered it for you. No proof they have for anyone. This was a blanket judgement. I am part Russian, I can say it. You can't.
Ginko - is a blood circulation enhancer - watch out it can really make you dizzy. No kidding. If you take it and start to feel the spins then stop. It is the ginko. Gotu Kola is better. Plus it has noted antioxidant properties. Many Indian herbs are more gentle than their Chinese counterparts. Look into Indian herbs before the stimulant Chinese herbs. Too many stimulating herbs and tonics can make you grunpy and act out in an uncontrolled manner and may land one in trouble - and all for taking herbs - how misdirected is that.
One should consider than when stacking these food suppliments they become weighty and hard to guage. A stack should be built slowly, considering the topography of the lay of the land one wants to explore. Not all things even act the same for all people.
Some really good herbs for everybody - Rhodiola Rosea (Now brand is cheap). RR has a cardiotonic effect which is soon noticable. It effects opioid receptor in the heart and thus strengthens it and helps prevent toxic emotional states. This is also my experience. Also tumeric is a potent antioxidant and antiinflammatory. One thing nobody here has discussed is that many dopaminergics also create inflammation and by adding to total ambient dopamine in the brain and body one over time starts to stop producing as many dopamine receptors which then becomes a problem and which is much of the problem of drug addiction having diminishing returns - seeking behaviour and tolerance, with a crash after. Antiinflammatory herbs, not NSAIDs are one of the key strategies to a healthy future, so tumeric and Rhodiola.
For women the time tested shatavari - is just Indian asparagus, and non toxic at any dose. For men, ashwagandha is good for building strentgh. Too much can make one dull.
Water is the fluid which transports all chems through the body. Drink more water. Water is itself antiinflammatory and reduces pain.
Psyllium - most toxins leave the body through the large intestine so dietary fiber helps rid oneself of toxins - which toxins don't leave through the large intestine leave through urine or sweat, so drink more water and sweat alot - exercise makes endogenous endrophins.
Moderation and time makes best study habits. You are not cramming for an exam here. Also you are not going to get high from any amount of different food suppliments, you are looking to promote a more facile state of health. Best Wishes to Everyone.