Physical Side Effects of Abruptly Stopping Sertraline
Abruptly stopping sertraline causes a discontinuation syndrome characterized by dizziness, sensory disturbances (electric shock-like sensations/paresthesias), headache, nausea, fatigue, gait instability, and insomnia, which typically begins within 1-7 days of cessation. 1
Core Physical Symptoms
The FDA drug label explicitly warns about physical discontinuation symptoms when sertraline is stopped abruptly 1:
Neurological symptoms:
- Dizziness (most commonly reported)
- Sensory disturbances - particularly paresthesias described as "electric shock sensations"
- Headache
- Lethargy
- Gait instability/balance problems
Gastrointestinal symptoms:
- Nausea
- Diarrhea
Other physical manifestations:
- Fatigue
- Insomnia
- Flu-like symptoms
Timeline and Severity
The discontinuation syndrome follows a predictable pattern 2, 3:
- Onset: Symptoms typically begin within 1-3 days after stopping (can occur within 1-7 days)
- Duration: Usually self-limiting within 3 weeks without intervention
- Resolution with reinstatement: Symptoms resolve within 48-72 hours if sertraline is restarted
While generally self-limiting, the FDA label notes there have been reports of serious discontinuation symptoms requiring medical attention 1.
Critical Clinical Considerations
Orthostatic hypotension is a documented but less common physical manifestation that can occur with sertraline discontinuation, causing dizziness and requiring extended tapering in some cases 4.
Research has identified 53 different discontinuation symptoms across case reports, with paroxetine being most frequently implicated among SSRIs, but sertraline clearly causes this syndrome 2. The syndrome occurs even when the medication has been tapered in approximately half of cases 2.
Management Algorithm
The FDA explicitly recommends gradual dose reduction rather than abrupt cessation 1:
- Taper gradually whenever possible
- If intolerable symptoms occur during taper or after discontinuation:
- Resume the previously prescribed dose
- Once symptoms resolve, continue decreasing at a more gradual rate
- Monitor patients for discontinuation symptoms during any dose reduction
Important Pitfalls
- Do not confuse discontinuation symptoms with relapse of the underlying psychiatric condition - discontinuation symptoms emerge rapidly (1-7 days) and include distinctive physical features like electric shock sensations
- The syndrome is not due to dependence or drug-seeking behavior - antidepressants do not cause addiction 5
- Symptoms can recur if the same tapering schedule is repeated without modification 2
- Missing doses can trigger symptoms even without full discontinuation 5