Fentanyl Withdrawal Symptoms & Timeline
A clinical, honest look at fentanyl withdrawal.
Symptoms
Fentanyl withdrawal symptoms include muscle and bone aches, sweating, chills, nausea, vomiting, diarrhea, runny nose, yawning, insomnia, anxiety, agitation, and intense cravings.
Timeline
- 6–24 hours after last use: Early symptoms begin.
- 24–72 hours: Peak symptoms — worst discomfort.
- Day 4–7: Symptoms ease.
- Week 2+: Post-acute symptoms (sleep issues, low mood) can persist.
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Frequently Asked Questions
Is fentanyl withdrawal dangerous?
Not usually medically dangerous, but extremely uncomfortable. Medical management keeps you safe and comfortable.