Frank Ludlow, 59, was caught by City of London Police trying to send dozens of parcels of fake remedies in a post office near his West Sussex home.
Judge William Mousley said father-of-two Ludlow contacted national governments and "took advantage of an international crisis".
American custom officials had intercepted Ludlow's fake kits at Los Angeles International Airport, with his "Trinity Covid-19 SARS Antipathogenic Treatment" labels attached, the court was told.
Prosecutor Steven Hopper said: "Mr Ludlow admitted to making the product and had been making it for 17 years.
Ludlow admitted three medical product offences but denied fraud charges which were to lie on file, Judge Mousley said
"The kits produced by Ludlow were unlawful and untested," he said
US officials said people who bought the kits were instructed to "add 18 ounces of water, say a prayer, drink half of the solution, take a probiotic along with bee pollen, and then ingest the remainder of the solution"
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