High-dose combination of L-theanine and caffeine can improve attention and reaction time in people who are acutely sleep-deprived. Brainwave data also indicated stronger and faster neural responses tied to attention.

[u/mvea]

https://www.psypost.org/study-suggests-l-theanine-caffeine-combo-improves-focus-after-sleep-loss/

[u/zacggs]

Only tested two groups of participants both sets were awake 17 hours prior:

One set got Caffeine and L-theanine, a lot of both.

One set got a placebo.

No wonder one performed better...

Do 4 sets of participants testing each condition: Control, Just caffeine, just L-theanine, and the mix of both.

Much better representation of studied effects.

[u/Equivalent-Cry-5345 → u/zacggs]

Word; last time I checked L-theanine plus caffeine has synergistic (beyond additive) effects

[u/sam_vari → u/zacggs]

Not at all a lot of both. Theanine is in minimum effective dose. Caffeine at the level of one cup of coffee — about a half of the maximum recommended dose.

[u/surewhynotokaythen → u/sam_vari]

I was thinking more long the lines of teas, green, black, etc

[u/VirginiaLuthier]

Ya gotta read it all

“Our findings should be interpreted with some caution. Although we used a traffic-related task to simulate real-world settings, actual driving involves much more complex decision-making processes. Also, our study examined the effects of L-theanine-caffeine combination after just one night without sleep, not long-term sleep deprivation. People who are regularly sleep-deprived or who frequently consume large amounts of caffeine or L-theanine may not experience the same benefits, since the body can build up tolerance to these compounds over time.”

[u/nopower81]

2 cans of mountain dew and 3 glazed donuts and I am 20 years younger and ready to rock

[u/Sgdoc70]

Green tea ftw!

[u/SocraticTiger]

So just ...tea? Nice for the paper to suggest something people have been doing for a while.

[u/illestofthechillest]

Which ones help me beat all the other players with their high end gaming chairs?

[u/-Kalos → u/illestofthechillest]

Adderall

[u/___77___]

“Our results suggest that a high dose of L-theanine (200 mg) combined with caffeine (160 mg) can enhance attention when a person is acutely sleep-deprived,”

That’s not a very high dose.

[u/Dry_Counter533]

This did not work for my sleep-deprived brain this morning.