I personally would recommend giving Piracetam+Choline a try. Both are very easy to dose and neither seem to have a problem with increasing the doses.
As for Lucidrol. I don't know, to me it felt like the equivalent to a caffeine pill, as in, you take it "when you need to", which seemed rather annoying when you don't feel like popping pills in the middle of the class. And overall the effects were not really constant, and seemed to vary depending on how you feel that day. So if you are tired to begin with, it didn't seem to help at all. But in cases where you had a good day to begin with it seemed rather useless. So overall it felt like a bit "meh".
I personally would recommend something like Piracetam, a product that you use daily, so there is that actual gradual improvement occurring as well, not just a "You take it now, but you will feel the same way you did the following hour or day".
I would also recommend looking through the ingredients of products like Focus-XT, and just buy those things separately, since you don't want the added caffeine.
GABA, L-Tyrosine, PEA, 5-HTP, Huperzine A, Vinpocetine, DMAE, Ginkgo Biloba
Also look into some stimulants as well, preferably not ones that are just caffeine-oriented, since they can cause the crash effect...Feeling ****ty + studying =
Right now I am taking White Flood, a pre-workout product, and that's mostly just for it's nootropic ingredients and the stimulant effect. It sure does help studying and being in a long lecture, when you are actually bright and awake. So yeah, nootropics alone can only do so much, don't forget that you need to be wide awake to actually take advantage of their effects...as in, if you are late studying into the night, you will need to stay awake as well, having sharp attention and focus will not always help.