🌿Detox Timeline Calculator
Detox timeline calculators estimate how long a substance takes to clear from the body based on its biological half-life — the time for plasma concentration to halve. Full clearance is approximately 5 half-lives.
- 1Full clearance ≈ 5 × half-life
- 2Caffeine: half-life 5–6 hours; fully cleared in ~30 hours
- 3Nicotine: half-life ~2 hours (cotinine 16–20 hours)
- 4Alcohol: metabolised at ~0.015% BAC/hr (15mg/100mL/hr) linearly — not exponential
Last caffeine at 2pm · half-life 5.5 hours=50% cleared by 7:30pm · 97% cleared by 1amExplains why evening coffee disrupts sleep
| Substance | Half-life | Full clearance |
|---|---|---|
| Caffeine | 5–6 hours | ~30 hours |
| Nicotine | 2 hours | ~10 hours |
| Alcohol | ~1 hour/unit | Varies with intake |
| Sugar (blood glucose) | ~2 hours | ~4 hours |
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Fun Fact
Caffeine inhibits adenosine receptors — it does not "give you energy" but blocks your brain from feeling tired. The adenosine still accumulates, which is why you crash when caffeine wears off.
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