Addiction drug shows promise lifting long COVID brain fog, fatigue
Researchers chasing long COVID cures are eager to learn whether low dose naltrexone (LDN) can offer similar benefits to millions suffering from pain, fatigue and brain fog months after a coronavirus infection. The drug has been used with some success to treat a similar complex, post-infectious syndrome marked by cognitive deficits and overwhelming fatigue called myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).
Drawing on its use in ME/CFS and a handful of long COVID pilot studies, there are now at least four clinical trials planned to test naltrexone in hundreds of patients with long COVID, according to a Reuters review of Clinicaltrials.gov and interviews with 12 ME/CFS and long COVID researchers. It is also on the short list of treatments to be tested in the U.S. National Institutes of Health's $1 billion RECOVER Initiative, which aims to uncover underlying causes and find treatments for long COVID, advisers to the trial told Reuters.