Cessation produces a predictable set of physical symptoms that are commonly misinterpreted, causing unnecessary panic and sometimes unnecessary relapse. Here is a symptom guide organized by substance.
NIC Cessation Symptoms
Headache (days 1-3): Nicotine is a vasoconstrictor; cessation produces vasodilation. Headaches are common and typically resolve by day 3-5. Hydration helps.
Coughing/mucus increase (weeks 1-4): Lung cilia-the small hair-like structures that clear the airways-regenerate rapidly after cessation. Increased mucus production and coughing is recovery, not illness. It typically resolves within 3-4 weeks.
Increased appetite: Expected. Nicotine suppresses appetite via hypothalamic nAChRs. See the weight gain article.
Constipation (days 1-5): Nicotine increases intestinal motility. Cessation temporarily slows it. Hydration and fiber intake address this.
Tingling in hands/feet (days 1-3): Improved circulation. Not concerning.
Mouth ulcers: Not uncommon in the first week; cause unclear but may relate to oral microbiome changes.
Seek medical attention if: Chest pain, significant shortness of breath, symptoms that worsen rather than improve after week 2.
GREEN Cessation Symptoms
Vivid/disturbing dreams: Expected REM rebound. Not a sign of pathology.
Night sweats: Reported by some cannabis cessation users; mechanism unclear. Typically resolves in week 2.
Nausea: More common in heavy concentrate users; peaks at days 3-7.
Headache: Less common than with nicotine; when present, typically mild.
GI upset: Appetite loss and nausea; related to ECS appetite signaling dysfunction. Typically resolves by week 2.
Seek medical attention if: Symptoms are severe enough to prevent fluid intake, or psychiatric symptoms (paranoia, panic) are significantly worsening rather than improving.
DRY Cessation Symptoms
Tremor (especially hands, days 1-7): CNS hyperexcitability. Should reduce significantly by day 5-7 of abstinence.
Sweating: HPA axis dysregulation and autonomic hyperactivity. Common; resolves within 1-2 weeks.
Elevated heart rate and blood pressure: CNS excitability. Usually manageable; monitor if you have cardiovascular risk factors.
Insomnia: Expected; both CNS hyperexcitability and neurotransmitter disruption affect sleep.
Nausea/vomiting: Acute withdrawal symptom. If severe, this may indicate a more significant withdrawal than expected.
Seek medical attention immediately if:
- Seizure
- Confusion or disorientation
- Visual or auditory hallucinations
- Heart rate above 120 at rest with no improvement after 24 hours
- Any confusion combined with eye movement problems or coordination loss (possible Wernicke's)
This list is not exhaustive. When uncertain, consult a physician. The DRY protocol is explicit: medical clearance is required before the protocol, not after complications arise.