Isoniazid and Sertraline interaction
Isoniazid and Sertraline: the Sertraline prescribing label 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 Sertraline (sertraline hydrochloride) label · effective 2025-08-06
Sertraline hydrochloride capsules are contraindicated in patients: Taking, or within 14 days of stopping, MAOIs, (including the MAOIs linezolid and intravenous methylene blue) because of an increased risk of serotonin syndrome [see Warnings and Precautions ( 5.2 ), Drug Interactions ( 7.1 )] .
Concomitant use of monoamine oxidase inhibitors (MAOIs), or use within 14 days of stopping MAOIs ( 4 , 7.1 )
The concomitant use of sertraline hydrochloride capsules with MAOIs is contraindicated.
Intervention: Sertraline hydrochloride capsules are contraindicated in patients taking MAOIs, including MAOIs such as linezolid or intravenous methylene blue [see Dosage and Administration ( 2.4 ), Contraindications ( 4 ), Warnings and Precautions ( 5.2 )] .
Clinically-Significant Drug Interactions with Sertraline Hydrochloride Capsules Monoamine Oxidase Inhibitors (MAOIs) Clinical Impact: The concomitant use of SSRIs, including sertraline hydrochloride capsules, and MAOIs increases the risk of serotonin syndrome.
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.