Some long Covid patients swear by the treatment, with one describing it to CNBC Make It as a "total game changer."
That's a huge stumbling block for many medical experts, who caution against viewing it as a universal remedy for long Covid.
Most of the ones who do get treated have reported improved long Covid symptoms, the clinic adds.
That's because a variety of underlying physiological conditions — like chronic lung issues, for example — can "drive different manifestations of long Covid," says Dr. Lucy Horton, an infectious disease physician who founded the long Covid clinic at UC San Diego Health.
"For many [Covid] long haulers, including myself, financial freedom is gone because we can't work full-time."