The international versions of the products are being manufactured in some customized ingredients depend on the country and its regulations, as well as these product are very close to the US version with some minor and small differences If you have any questions about your International Challenger Nutrition Products or their authenticity, please contact your Authorized Challenger Nutrition Distributor or contact our Challenger Team directly. We can be reached by email at or by phone at 1-866-665-1501 and our Customer Service specialists will be happy to assist you.

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