Nootropics
Creatine vs Caffeine for Cognition
Creatine and caffeine boost cognition differently. Learn how each works, what the research says, and why combining them may be smarter than choosing one.
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Roon Team
June 20, 2026·10 min read
#caffeine+1
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Nootropics
Caffeine vs Paraxanthine
Is paraxanthine really 'cleaner' than caffeine? We break down the human research, marketing claims, and what the science actually shows.
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Roon Team
June 20, 2026·10 min read
#caffeine
Nootropics
Modafinil vs Caffeine: What the Sleep-Deprivation Studies Show
Modafinil vs caffeine in sleep-deprivation studies reveals a surprisingly small gap. See what the science says before assuming the prescription drug wins.
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Roon Team
June 20, 2026·10 min read
#caffeine+2
Nootropics
Lion's Mane vs Caffeine
Lion's mane and caffeine work nothing alike. Learn how each boosts the brain, when to use them, and why most people benefit from both.
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Roon Team
June 20, 2026·9 min read
+1
Nootropics
Caffeine L-Theanine Study (Owen 2008): The Trial Behind the Stack
The 2008 caffeine l-theanine study by Owen et al. made this combo the go-to focus stack. See what the data actually showed and where it holds up.
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Roon Team
June 19, 2026·10 min read
#caffeine+3
Science
Why Caffeine's Half-Life Varies 5-Fold: Genes, Smoking
Caffeine half-life ranges from 2 to 18 hours. Learn how your genes, smoking, birth control, and pregnancy dramatically change how long caffeine keeps you
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Roon Team
June 19, 2026·10 min read
#caffeine+2
Science
How Caffeine Actually Works in Your Brain
Caffeine doesn't give you energy—it blocks adenosine receptors to hide fatigue. Learn exactly how caffeine works in the brain and why crashes happen.
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Roon Team
June 18, 2026·10 min read
#caffeine+1
Science
Guarana: Does the "Slow-Release Caffeine" Story Actually Hold Up?
The 'slow-release caffeine' story sells guarana products everywhere. But does the science back it up? Here's what the research actually shows.
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Roon Team
June 17, 2026·10 min read
+3
Science
Caffeine Anhydrous: What "Dried" Caffeine Actually Is
Caffeine anhydrous is just dehydrated caffeine—same molecule, higher purity. Learn what it is, how it's dosed, and why it's the default in supplements.
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Roon Team
June 17, 2026·11 min read
#caffeine+1
Nootropics
Caffeine Teacrine Dynamine Study: The Egamer Study Decoded
The 2021 egamer trial tested caffeine, TeaCrine, and Dynamine on reaction time and focus. Here's what the data actually shows—and where the hype falls
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Roon Team
June 15, 2026·10 min read
#caffeine+2
Nootropics
Caffeine + L-Theanine vs the Roon Stack: What Theacrine and Methylliberine Actually Add
Discover what theacrine and methylliberine add to the classic caffeine l-theanine stack—longer energy, less tolerance, and smoother focus with Roon's
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Roon Team
June 15, 2026·10 min read
#caffeine+3
Nootropics
Sublingual Caffeine Absorption: Does Mouth Delivery Work Faster?
Is sublingual caffeine actually faster? We break down the real pharmacokinetics of mouth-absorbed caffeine—what the data says about speed
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Roon Team
June 15, 2026·10 min read
#caffeine+2
Nootropics
Caffeine, Theanine, Theacrine & Methylliberine Synergy Explained
Discover how caffeine, theanine, theacrine, and methylliberine synergy creates a smooth, crash-free focus curve. The pharmacology behind Roon's 4-compound
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Roon Team
June 15, 2026·11 min read
#caffeine+3
Nootropics
Does Caffeine Reduce Blood Flow to Your Brain? The Vasoconstriction Paradox
Caffeine reduces cerebral blood flow by ~27%, yet sharpens focus. Discover the vasoconstriction paradox and what actually drives caffeine's cognitive
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Roon Team
June 15, 2026·9 min read
#caffeine+3
Science
Why Roon Uses a Caffeine-Forward Ratio of L-Theanine
The 2:1 theanine-to-caffeine rule isn't settled science. Learn why a caffeine-forward ratio may deliver sharper, more usable focus for many people.
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Roon Team
June 12, 2026·8 min read
+3
Focus
Caffeine + Citicoline vs Caffeine + L-Theanine
Citicoline vs choline for focus pouches—learn which stack wins for your goals. Compare caffeine + citicoline vs caffeine + L-theanine with real science.
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Roon Team
June 12, 2026·10 min read
#focus#caffeine+3
Science
What "Clean Caffeine" Actually Means
Wondering what clean caffeine actually means? Learn how to identify real clean energy by source, dose, and ingredients—no jargon, just clarity.
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Roon Team
June 11, 2026·8 min read
#caffeine+3
Alternatives
Pre-Workout Pouches: The Best Nicotine-Free Options for the Gym
Pre workout pouches skip the shaker bottle. Caffeine absorbs through oral tissue in minutes. See the best nicotine-free options for the gym, ranked.
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Roon Team
June 11, 2026·10 min read
#caffeine+3
Science
Caffeine + L-Theanine for Athletes: The Calm-Focus Stack Behind Better Reaction Time
Discover how an l theanine pre workout stack sharpens reaction time, cuts jitters, and boosts athletic focus. Learn dosing ratios backed by 2025 research.
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Roon Team
June 9, 2026·8 min read
#caffeine+3
Energy
Clean Caffeine: Clean Energy Without the Crash
Clean caffeine isn't about the plant source—it's about dose, delivery, and what it's paired with. Learn the chemistry behind crash-free energy.
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Roon Team
June 9, 2026·8 min read
#energy+3
Science
How to Reset Caffeine Tolerance in 7–14 Days
Learn why caffeine stops working and how to reset caffeine tolerance in 7–14 days. Discover tapering strategies, withdrawal tips, and smarter dosing habits.
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Roon Team
June 8, 2026·8 min read
#caffeine+3
Science
Does Caffeine Improve Reaction Time? What Esports Studies Show
Does caffeine improve reaction time for gamers? See what esports studies reveal about the optimal dose for faster reactions and better aim accuracy.
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Roon Team
June 8, 2026·8 min read
+3
Science
Theacrine vs Caffeine
Theacrine vs caffeine compared: discover why theacrine doesn't build tolerance, lasts longer, and how combining both stimulants may be the smarter approach.
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Roon Team
June 6, 2026·10 min read
#theacrine (teacrine®)#caffeine+3
Wellness
Caffeine Jitters While Gaming: Why Hands Shake and How to Fix It
Caffeine jitters ruining your aim? Learn why sweaty, shaky hands happen during gaming and how to fix it without giving up caffeine.
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Roon Team
June 5, 2026·8 min read
#caffeine+3