In isolated synaptoneurosomes, Noopept (as well as the endogenous peptide cycloprolylglycine) appear to modulate neuronal membrane potential, causing depolarization but and being able induce hyperpolarization in a calcium-dependent manner (hyperpolarization abolished in calcium-free medium); Noopept was more effective than cycloprolylglycine in this regard but the two were competitive rather than additive.  The researchers noted this effect could be due to blocking calcium channels (noted previously in snail neurons  where 10nM Noopept as well as both Piracetam at 100mM and Vinpocetine at 30mM at inhibiting slow inactivating potassium channels without influencing calcium or fast acting potassium channels  ) and would result in increased excitatory potential of neurons. However, as Noopept is also associated with protection against stroke (a mechanism related to opening potassium channels) a modulatory effect was proposed. 
You can’t. And, 98% of these products DO NOT WORK, period. Don’t waste $$ on these scams folks. Moderate exercise, eating a lot less fast food garbage and mediation 10 minutes a day will all show improved mental clarity, memory, focus. Anyone that blows $30 a month on OTC vitamins is fooling themselves. I see another problem in society: lots of people buying Gatorade and other sports drinks, people that definitely don’t exercise or work out. Folks, these drinks were made for athletes and those that exercise. It’s not for kids either.