For general inquiries please contact:
For scientific / technical inquiries please contact:
Local distributors & trade please contact:

I.N.C. Agency BV
De Zodde 16
1231 MB Loosdrecht
The Netherlands

T: +31 (0) 35 65 65 655
F: +31 (0) 35 65 65 669


The Authentic MASQUELIER’s® Products

Consumers are hereby advised that the original MASQUELIER’s® Original OPCs branded products are authenticated exclusively by International Nutrition Company (INC) of Loosdrecht, The Netherlands. MASQUELIER’s® Original OPCs originate from no other source than INC, the owner of the MASQUELIER’s® brand. INC also oversees and ensures the consistent quality of the MASQUELIER’s® branded products.

Prof. Dr. Jack Masquelier gave INC the exclusive right to register and use his personal name as a trademark to distinguish MASQUELIER’s® Original OPCs as the authentic product that has a direct link with more than 50 years of scientific research.

In addition, Dr. Masquelier gave INC the exclusive right to use his name, signature and portait on and in relation with INC’s MASQUELIER’s® products. Consumers find these elements incorporated in the following logo: ((logo))

Watch out for imitators !

Some competitors try to circumvent the fact that they cannot offer you the authentic trademarked MASQUELIER’s® Original OPCs by using Dr. Masquelier’s personale name on websites, suggesting similarity between their generic imitation products and INC’s MASQUELIER’s® products that bear trademark and logo.

INC herewith gives public notice that the use of Dr. Masquelier’s name to promote products that do not clearly and visibly bear INC’s name and the MASQUELIER’s® trademark and logo, is no guarantee that a product contains MASQUELIER’s® Original OPCs.

Only the products authenticated and trademarked by INC as MASQUELIER’s® and bearing the portait, name and signature of Dr. Masquelier as well, are the original products that were invented, researched and developed by Dr. Masquelier.

What about “blends” containing MASQUELIER’s® and non-related ingredients ?

Some clients who purchase from INC’s distributors combine MASQUELIER’s® Original OPCs with ingredients that were not present in the pure and unadulterated products used during the 50 years of research and trials. All the statements of nutritional support presented on this website are based on research performed with pure MASQUELIER’s OPCs that have not been combined with other ingredients. None of the formulations that add other ingredients to MASQUELIER’S® OPCs are endorsed or authorized by Dr. Masquelier. Please note that when you read the ingredient lists of these complex formulations, only the ingredient(s) trademarked as MASQUELIER’s® originate from INC.