Special:  Buy two of the same product and get the third free.


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WELCOME to Primary Source®, THE premier American source for Masquelier OPC® products. We invite you to peruse our site to learn about OPC health benefits, review scientific information and purchase our quality Primary Source® OPC products.


Only Primary Source® offers Masquelier® Original OPC
in all these forms:





To learn more click on our PRODUCT INFORMATION link above or contact us by phone or email. We’re here to serve your needs. Thank you for visiting PSOPC.COM!


Primary Source® is a registered trademark of Sweetwater Natural Products, LLC of Hancock, NH

Masquelier® is a registered trademark of International Nutrition Company of Vaduz, Lichtenstein..