@ oneragman….The building with the MRC mailing address in St. Petersburg It is managed & owned by BayWest Realty. It seems as if some of the units are owner occupied and other suites are rentals. The building has legitimate businesses such as an insurance agency, ice-cream shop, general contractor's office, a holistic wellness practice (that offers supplements by Nutrametrix and Metagenix).
Some other firm called Alive Innovations is using Suite #4195 (drop box??) and they offer wholesale nutraceuticals and medical 'healing' equipment. I did not see Omega-3 type supplements in their offering.
Blend Pharmaceutical, LLC also lists Suite 4000 as a corporate address. I think they offer dermatology products.