Oral Tetracyclines for Rosacea: Previous and Newer Therapies

In this episode of Derms and Conditions, host James Q. Del Rosso, DO, welcomes Dallas/Fort Worth–based dermatologist Todd Plott, MD, for an in-depth discussion on the first extended-release formulation of minocycline approved for rosacea. The conversation begins with a historical look at tetracyclines, tracing back to tetracycline in 1953, doxycycline in 1968, and minocycline in 1971. While traditionally used as broad-spectrum antibiotics, these agents have shown efficacy in rosacea primarily due to their anti-inflammatory activity rather than antimicrobial effects. They review head-to-head clinical data showing that extended-release minocycline, commercially available as Emrosi, significantly reduced inflammatory lesions and improved Investigator Global Assessment scores in patients with moderate-to-severe rosacea, outperforming both modified-release doxycycline and placebo. The trial population averaged 25 papules per patient, demonstrating the robust improvement required for trial success. A key point of discussion is minocycline’s narrow therapeutic window. While higher doses have raised concerns about adverse effects such as hyperpigmentation and lupus-like drug reactions, pharmacokinetic data show that extended-release dosing achieves lower systemic exposure with fewer safety issues compared to immediate-release formulations. Dr Plott contextualizes this by noting that dermatology indications require far lower doses than in infectious disease, which helps explain the rationale for the extended-release formulation in rosacea. Tune in to the full episode to learn more about how extended-release minocycline and anti-inflammatory dosing fit into current rosacea treatment options, what the latest evidence shows about its efficacy and safety, and how clinicians can gain refreshed perspectives on this long-standing therapy.