By Dr. Priyom Bose, Ph.D. Reviewed by Lauren Hardaker Feb 3 2026 Large clinical trials and real-world data point to a familiar diabetes drug as a simple, safe way to reduce the long-term toll of COVID-19 when given early in infection. Study: Preventing Long COVID With Metformin . Image credit: Jack_the_sparow/Shutterstock.com Authors of an editorial commentary in Clinical Infectious Diseases reviewed evidence from randomized trials and real-world analyses to evaluate why metformin should be

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