They are supplements containing several synergistically working nootropic substances whose aim is to improve cognitive functions, mental clarity, focus and concentration. Typically, it is a mix of a source of choline, AChE inhibitors, racetam group substances, B vitamins, light stimulants (eg. caffeine), or sedative substances (eg. theanine, phenibut) depending on the purpose of the formulation. Prepared complexes often also contain substances regenerating the nervous system (eg. phosphatidylserine, omega-3 acids) and improving the cerebral circulation (eg. vinpocetine). Ready nootropic formulas are designed for beginners who have little experience in combining specific substances in order to maximize effects and safety.