Its also a common symptom of multiple kinds of vitamin deficiencies most notably vitamins B and D so simply taking a vitamin (or multivitamin) supplement for energy can improve your cognition without having to turn to nootropics
Liang X, Zhang Z, Tian X, Cui Q, Lu H, Zhao M, et al
improved neurobehavioral outcomes
It directly scavenges free radicals and also helps other antioxidants, like vitamins C and E, do their jobs
After all, each antioxidant works differently: some neutralize free radicals, some regenerate other oxidized molecules, and some strengthen cell membranes by making them more resistant
Bacteriostatic Water for Injection $19.97 Including FREE Shipping Bacteriostatic Water is a sterile, non-pyrogenic preparation of water containing 0.9% benzyl alcohol as a bacteriostatic preservative