Claim: "Double X* is the number one selling multivitamin multi-mineral with phytonutrients from five phytonutrient colour* groups."
Methodology: Source Euromonitor International Limited, rsp terms, all channels, 2014.
* "Double X", can be replaced with "Triple X" in Japan.
*"Colour" can be interchanged with "colour" as desired by Amway.