Long-tail guide
Caffeine Withdrawal From 650mg/Day
High daily intake with stronger withdrawal; tapering is recommended over cold turkey.
What to expect
- - Headaches and fatigue are the most common symptoms
- - Symptoms often peak around day 2 to 3 for many people
- - Sleep can improve, but the first few nights may feel off
- - At ~650mg/day, withdrawal can last longer than a week
- - A slower taper is usually more sustainable than abrupt stopping
A taper plan starting point
- - Days 1-2: 520mg
- - Days 3-4: 420mg
- - Days 5-6: 340mg
- - Days 7-8: 270mg
- - Days 9-10: 220mg
- - Days 11-12: 180mg
- - Days 13-14: 140mg
- - Days 15-16: 110mg
- - Days 17-18: 90mg
- - Days 19-20: 70mg
- - Days 21-22: 60mg
- - Days 23-24: 40mg
- - Days 25-26: 20mg
- - Day 27: 0mg
- - If headaches are severe, slow the taper (hold a step for 3-4 days) rather than pushing through
This is a general guide. Adjust for your schedule and comfort. If you have health concerns, consult a professional.
Run the calculator
Use the homepage tool to estimate intake from coffee, tea, and energy drinks, then compare it against this guide.
Related intake guides
Caffeine Withdrawal From 50mg/Day
Low intake withdrawal is usually mild, but headaches and fatigue can still happen.
Caffeine Withdrawal From 75mg/Day
Low intake withdrawal is usually mild, but headaches and fatigue can still happen.
Caffeine Withdrawal From 100mg/Day
Common intake range where symptoms are noticeable but often manageable with a short taper.