Student Study

Why These Combine

Four compounds on three different clocks, which is the whole point of the design. The slow one is bacopa. In healthy adults, 300 mg a day of a standardised extract improved speed of visual information processing, learning rate and memory consolidation against placebo, with the maximum effect at 12 weeks, the later of its two test points (Stough 2001), and a meta-analysis of nine placebo-controlled trials of at least 12 weeks (518 participants) confirms a modest gain — about 18 ms on Trail B and 11 ms on choice reaction time (Kongkeaw 2014). So bacopa started the week before an exam does nothing; started at the beginning of term, it has a fair chance. The fast one is L-theanine with caffeine: 250 mg theanine plus 150 mg caffeine improved reaction times, working-memory speed and sentence verification and cut 'tired' ratings within the hour (Haskell 2008), and 100 mg plus 50 mg improved attention-switching and reduced distraction at 60 minutes in 27 volunteers (Owen 2008). That pairing is for the study session itself, and it assumes the caffeine is already there. Creatine sits in between and comes with a dose caveat: the sleep-deprivation result everyone quotes — less decline in choice reaction time, movement generation, balance and mood after 24 hours awake — was in 19 people who had loaded 5 g four times a day for seven days (McMorris 2006), not on a 5 g maintenance dose; the 5 g-a-day result that does exist is six weeks of 5 g improving backward digit span and Raven's matrices in 45 young vegetarians (Rae 2003), while a systematic review of six creatine trials found task performance largely unchanged in young people and a better memory response in vegetarians than in meat-eaters (Avgerinos 2018). Omega-3 helped where intake was low: 176 healthy adults aged 18–45 with low habitual DHA who took 1.16 g DHA a day for six months improved reaction times of episodic and working memory, women more on memory and men more on working-memory speed (Stonehouse 2013) — if your diet already supplies DHA, that trial does not tell you what to expect. Compared with Memory & Recall this drops alpha-GPC and phosphatidylserine for the two things you can feel in a session; compared with Focus & Flow it trades citicoline and rhodiola for bacopa and creatine, and so suits a term rather than a day. Verdict: start bacopa eight to twelve weeks out, use theanine with your normal coffee on study days, take creatine daily and judge it over a month, and add omega-3 only if your diet is short of it.

• Recall over months rather than a term? The Memory & Recall stack keeps the bacopa and adds alpha-GPC and PS→
• Need attention today rather than a term plan? The Focus & Flow stack→
• The theanine-and-caffeine pairing in detail, including the ratio the trials used→

References

1. 1.Stough 2001, Psychopharmacology — Healthy adults, double-blind placebo-controlled: Bacopa monniera extract 300 mg/day improved speed of visual information processing, learning rate and memory consolidation (p<0.05) and reduced state anxiety (p<0.001) versus placebo, with maximal effects at 12 weeks; tested at 5 and 12 weeks. (a 2015 erratum corrected a dosage error in the article text)
2. 2.Kongkeaw 2014, J Ethnopharmacol — Meta-analysis of 9 randomised placebo-controlled trials (518 participants) of standardised Bacopa monnieri for 12 weeks or longer: Trail B shortened by 17.9 ms and choice reaction time by 10.6 ms versus placebo (both p<0.001).
3. 3.Haskell 2008, Biol Psychol — Randomised placebo-controlled double-blind crossover: 250 mg L-theanine + 150 mg caffeine gave faster simple and working-memory reaction times, better sentence-verification accuracy and lower 'tired' and 'headache' ratings than either alone.
4. 4.Owen 2008, Nutr Neurosci — 27 healthy volunteers: 100 mg L-theanine + 50 mg caffeine improved speed and accuracy of attention-switching at 60 min and reduced susceptibility to distraction at 60 and 90 min versus placebo.
5. 5.McMorris 2006, Psychopharmacology — 19 subjects (creatine n=10, placebo n=9) took 5 g creatine monohydrate four times a day for 7 days, then were tested through 24 h of sleep deprivation with mild exercise: at 24 h the creatine group showed significantly less decline in random movement generation, choice reaction time, balance and mood state. (20 g/day loading protocol, not the 5 g/day used here)
6. 6.Rae 2003, Proc Biol Sci — 45 young adult vegetarians, double-blind placebo-controlled crossover: creatine 5 g/day for 6 weeks improved working memory (backward digit span) and intelligence (Raven's Advanced Progressive Matrices), p<0.0001. (vegetarians, who start with lower creatine stores)
7. 7.Avgerinos 2018, Exp Gerontol — Systematic review of 6 randomised trials (281 healthy participants): short-term memory and intelligence/reasoning may improve with creatine; other domains conflicting; task performance unchanged in young individuals; vegetarians responded better than meat-eaters on memory tasks. (systematic review)
8. 8.Stonehouse 2013, Am J Clin Nutr — 176 healthy non-smoking adults aged 18–45 with low habitual DHA intake, randomised double-blind, 6 months: 1.16 g DHA/day improved reaction times of episodic memory (−0.18 SD) and working memory (−0.36 SD) versus placebo; episodic memory improved in women and working-memory reaction time in men.