The LockIn Blog
Notes on focus.
Evidence-first writing on focus, attention and high-stakes work from the LockIn team. No hype, every claim sourced.
· 3 min read
Is American Ginseng Good for Memory? What the Human Trials Show
American ginseng (Panax quinquefolius) and memory: what Scholey 2010, Ossoukhova 2015 and Bell 2022 found, the limits of the evidence, and safety notes.
Read article →· 4 min read
Best Nootropics in India for Studying: What Has Evidence (JEE, UPSC, CAT, GATE)
An honest, evidence-ranked list of study supplements in India for JEE, UPSC, CAT and GATE aspirants: what works, what's hype, and what to fix first.
Read article →· 3 min read
Caffeine for JEE, UPSC and CAT Prep: How to Time It Without Wrecking Your Sleep
How exam aspirants should use caffeine: timing, dose, cut-off hours, exam-day rules and what to do if you're under 18. Practical and evidence-based.
Read article →· 3 min read
Caffeine Half-Life: How Long It Stays in Your Body and When to Stop
Caffeine half-life is about 5 hours but ranges from 1.5 to 9.5. See how long caffeine stays in your system and how to set your own cut-off time.
Read article →· 3 min read
Caffeine + L-Theanine: Ratio, Dose and How Long It Lasts
Caffeine and L-theanine: the 1:2 ratio explained, doses used in trials, how long it lasts, and when to take it. Evidence-first, with named studies.
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How Much Caffeine Is Too Much? Limits by Bodyweight (400 mg, 200 mg, 3 mg/kg)
How much caffeine is too much? The 400 mg adult limit, 200 mg per dose, the 3 mg/kg rule for teens, and how chai, coffee and cola add up.
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How to Verify an Indian Supplement: FSSAI Licence, CoA and Third-Party Testing
A 7-step checklist to verify any supplement sold in India: check the FSSAI licence, read the label, ask for a batch CoA, and spot fake or risky products.
Read article →· 2 min read
L-Theanine: Benefits, Dose, Timing and Side Effects
L-theanine explained: what the studies show for calm focus, typical doses, when to take it, safety, and who should be cautious. Evidence-first.
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How to Read a Supplement Certificate of Analysis (CoA) Before You Buy
Learn to read a supplement certificate of analysis: batch numbers, HPLC vs UV, heavy metals in ppm, microbial limits and the red flags brands hope you miss.
Read article →· 4 min read
What Are Nootropics? A Beginner's Guide for India (2026)
Nootropics explained for India: what they are, what the evidence says, what's legal, who should avoid them, and how to spot marketing hype.
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