Escitalopram and Lithium interaction
Escitalopram and Lithium: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Escitalopram label · effective 2025-08-31
Serotonin Syndrome: Increased risk when co-administered with other serotonergic agents but also when taken alone.
If concomitant use of Escitalopram Capsules with other serotonergic drugs is clinically warranted, inform patients of the increased risk for serotonin syndrome and monitor for symptoms.
Other Serotonergic Drugs Prevention or Management Monitor patients for signs and symptoms of serotonin syndrome, particularly during escitalopram initiation and dosage increases.
Lithium Prevention or Management Monitor plasma lithium levels with appropriate adjustment to the lithium dose in accordance with standard clinical practice.
Mechanism and Clinical Effect(s) Because lithium may enhance the serotonergic effects of escitalopram, caution should be exercised when Escitalopram Capsules is used concomitantly with lithium.
From the Lithium (Lithium Carbonate) label · effective 2026-06-04
If concomitant use of lithium with other serotonergic drugs is clinically warranted, inform patients of the increased risk for serotonin syndrome and monitor for symptoms.
• Serotonergic Agents: Increased risk of serotonin syndrome when co-administered with lithium.
Serotonergic Drugs Clinical Impact: Concomitant use can precipitate serotonin syndrome.
If serotonin syndrome occurs, consider discontinuation of lithium and/or concomitant serotonergic drugs [see Warnings and Precautions ( 5.6 )] .
The risk is increased with concomitant use of other serotonergic drugs (including selective serotonin reuptake inhibitors, serotonin and norepinephrine reuptake inhibitors, triptans, tricyclic antidepressants, fentanyl, tramadol, tryptophan, buspirone, and St.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.