Phosphatidylserine is a natural compound that plays a big role in human health and cognition. In addition to maintaining cellular structure and fluidity, it improves mood and memory, enhances focus and learning ability, reduces the effects of stress, increases endurance, and has been proven to slow or even reverse age-related mental decline.
Modafinil is a wakefulness-promoting agent that is often used off-label by healthy individuals that want to enhance their mental performance. Its effectiveness has been well-documented in several studies over decades of research.
Phenibut is a central nervous system depressant developed in Russia for the treatment of anxiety disorders. It's a proven calmative that may also have nootropic effects, but it's a powerful and potentially addictive pharmaceutical that must be taken responsibly.
Adrafinil is a wakefulness-promoting drug that appears to have impressive nootropic properties. Used responsibly, it may be an effective tool for supporting lengthy mentally demanding tasks.
Phenylpiracetam is a powerful racetam nootropic, developed in Russia for use by cosmonauts on long space missions. It's a potent stimulant that may also improve mood, memory, cognition, and even athletic performance.