Caffeine Calculator: What Time Does Your Coffee Stop Working?
What time does your coffee actually stop working?
Caffeine takes about six hours to halve. Add everything you'd drink a day and see what is still circulating when your head hits the pillow.
Your day
0mg
in your system at bedtime
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The morning cup, without the 10pm hangover
Deep Focus Brew is a cocoa-based blend with 0mg of caffeine. The focus comes from Lion's Mane, Cordyceps, Bacopa Monnieri and Maitake instead of a stimulant. so there is nothing left in your system at bedtime to measure.
Try Deep Focus Brew- Zero caffeine, so nothing to taper and no 3pm crash
- Built for daily use => no tolerance curve to keep climbing
- Full dose on the label, third-party tested by Eurofins
- Keeps the ritual: same mug, same time
Uses a six-hour half-life. Individual clearance runs roughly from four to nine hours depending on genetics, liver enzymes, medication, pregnancy and smoking, so treat this as an estimate rather than a measurement. Where a drink lists more than one serving, the earlier ones are assumed to be spaced two hours apart.