Drug Interaction Between Prednisone and SSRIs

Introduction to Key Interactions

The combination of prednisone and SSRIs may have additive bleeding risk, particularly for upper GI bleeding, according to the British Medical Journal 2
SSRIs significantly increase bleeding risk when combined with other medications, more than doubling the risk compared to warfarin alone in one study, as reported in Circulation: Arrhythmia and Electrophysiology 1

Sertraline and citalopram/escitalopram are preferred choices when combining with prednisone, as they have less CYP450 inhibition compared to fluoxetine and fluvoxamine, according to Circulation: Arrhythmia and Electrophysiology and Praxis Medical Insights 1, 3
Fluoxetine and fluvoxamine should be avoided or used with caution as they strongly inhibit CYP2C9 and CYP3A4 enzymes, potentially increasing drug interaction risks, as noted in Circulation: Arrhythmia and Electrophysiology 1

Screen for bleeding risk factors (history of GI bleeding, peptic ulcer disease, concurrent antiplatelet agents) and consider prophylactic proton pump inhibitor if multiple bleeding risk factors are present, as recommended by the British Medical Journal and Circulation: Arrhythmia and Electrophysiology 1, 2
Elderly patients require particular caution due to higher baseline bleeding risk and should preferentially receive sertraline, citalopram, or escitalopram over fluoxetine or paroxetine, according to Praxis Medical Insights 3