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Intangible Assets (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Intangible assets consisted solely of CFDA approved medical formulas as follows:    
Gross carrying amount $ 5,030,260 $ 4,909,318
Accumulated amortization (4,779,994) (4,642,875)
Net carrying amount $ 250,266 $ 266,443