Recent findings indicate that a two-week regimen of metformin does not alleviate symptoms associated with Long COVID.

A research team based in South Korea undertook a randomized, double-blind, and placebo-controlled clinical trial to assess whether ursodeoxycholic acid (UDCA) or metformin could serve as effective treatments for Long COVID.

The study divided participants into three distinct groups using a 1:1:1 ratio. Over a duration of 14 days, individuals were administered either a double placebo, UDCA at a dose of 900 mg once daily, or oral metformin uptitrated to 1500 mg/d.

The final analysis determined that neither pharmaceutical option offered any benefit when compared to the placebo.

Investigating metformin was considered a priority because two previous clinical trials had established that taking the drug during an acute infection reduced the risk of developing Long COVID.

This leads us to ask why metformin appears successful in preventing the condition but fails to treat established cases of LC.

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