Maral (Rhaponticum) root extract 2 ml before learning, sublingual more powerful and sooner onset (50g root/ 250g alcohol 60 percent ) - alertness, concentration, mood, reaction time, verbal fluency, memory, adaptogen
Schisandra chinensis (250mg -1g dried fruit 2x daily) - alertness, concentration, reaction time, strenght and endurance improvement
Caffein or (theophylline has longer effect) - alertness, concentration, reaction time
DMAE (50 - 150 mg DMAE bitartat / day) - alertness, concentration, mood, antianxiety, verbal fluency
lavender (0.7g/0.7l water but I eat flower I like it
Siberian root extract - concentration, mood, antianxiety (dependent on dose), adaptogen (jamieson 1 caplet before learning)
linden (1.5g/0.7l water) - antiaxiety, mood, relaxation, concentration
sage (salvia) tea (1.5g/0.7l water)- antiaxiety, mood, relaxation, concentration
lemon balm tea (1.5g/0.7l water) - antiaxiety, mood, relaxation, concentration
pls write only stuff you have taken and can subjectively confirm its effect.