- Duration: 2-12 days Cause: Light-headedness, dizziness or faintness are common. After quitting, oxygen levels increase to normal which may cause dizziness. As a smoker, the carbon monoxide from the cigarette smoke prevented a healthy supply of oxygen from reaching your brain.
- Tip: Take extra caution when performing activities. Change positions slowly. If a dizziness spell occurs, sit or lie down until in passes.