What is "ovoferrin"

Ovoferrin was a tonic originally produced in the United States by A.C. Barnes Company of Philadelphia, Pennsylvania and later by Zonite Products Corporation, which acquired A.C. Barnes Company in 1929. The product grossed approximately $400,000 annually in 1929. Both Ovoferrin and Argyrol continued to be exclusively manufactured by A.C. Barnes Company, which became a subsidiary of Zonite Products Corporation. On January 2, 1946 Ovoferrin and Argyrol were assigned to Erwin, Wasey & Company, a New York based advertising agency.