Can You Take Sertraline the Night Before a Colonoscopy?
Yes, you should continue taking sertraline the night before your colonoscopy. There is no contraindication to continuing sertraline during colonoscopy preparation, and abruptly stopping this medication can cause serious withdrawal symptoms.
Key Reasoning
No Contraindication in Guidelines or Drug Labeling
The most recent 2025 US Multi-Society Task Force guidelines on optimizing bowel preparation for colonoscopy 1 provide comprehensive recommendations about medications and preparation protocols but do not identify SSRIs like sertraline as medications that need to be discontinued before colonoscopy. The guidelines specifically recommend that "the selection of a bowel preparation regimen should consider the individual's medical history and medications" 1, but sertraline is not among the medications requiring special consideration or discontinuation.
The FDA drug label for sertraline 2 does not list colonoscopy or bowel preparation as situations requiring medication discontinuation. The label emphasizes that "Do not stop sertraline without first talking to your healthcare provider. Stopping sertraline too quickly may cause serious symptoms including anxiety, irritability, high or low mood, feeling restless or changes in sleep habits, headache, sweating, nausea, dizziness, electric shock-like sensations, shaking, confusion" 2.
Risks of Discontinuation Outweigh Any Theoretical Concerns
Abrupt discontinuation of sertraline poses real, documented risks including SSRI discontinuation syndrome with symptoms that could complicate your colonoscopy experience 2. These withdrawal symptoms (nausea, dizziness, confusion) could be mistaken for complications from the bowel preparation or procedure itself.
No Evidence of Interference with Colonoscopy
While research shows SSRIs may have gastrointestinal effects 3, 4, there is no evidence that continuing sertraline interferes with:
- Bowel preparation quality
- Colonoscopy visualization
- Procedural safety
- Sedation efficacy
The 2020 international consensus on fasting before procedural sedation 5 addresses medication continuation broadly and does not identify SSRIs as problematic for procedures requiring sedation.
Important Caveats
Bleeding Risk Consideration
Sertraline can increase bleeding risk, particularly when combined with NSAIDs, aspirin, or anticoagulants 2. However, this is a chronic risk factor that your gastroenterologist should already be aware of—it is not a reason to stop sertraline acutely before the procedure. If you're taking blood thinners alongside sertraline, your physician may have specific instructions about those medications, but sertraline itself should be continued.
Inform Your Procedural Team
Make sure your gastroenterologist and anesthesia team know you take sertraline, as it can interact with certain medications used during sedation (though these interactions are manageable and do not contraindicate the procedure) 2.
Take With Clear Liquids if Needed
If your colonoscopy preparation instructions allow clear liquids up to 2 hours before the procedure (consistent with modern ASA guidelines mentioned in 1), you can take your sertraline with a small sip of water during this window. If your procedure is early morning and you normally take sertraline at night, take it the night before as usual.
Bottom line: Continue your sertraline as prescribed. The risks of stopping it far exceed any theoretical concerns about continuing it through colonoscopy preparation.