Pro Iso has been the Official Isotonic Supplier for the WRU since 2014 and the renewal will see the national squad continue to consume the leading isotonic drink throughout training and matches.


The Pro Iso range, which is made in Wales, is formulated by the Wales National Squad’s Nutritionist Jon Williams. “We are extremely pleased to be able to say Pro Iso continues to be the chosen drink of the Wales National Squad,” said Williams.


“We worked long and hard on developing the taste for use during elite level sport and have listened to direct feedback from players with regard to reducing the sweetness which can be found in some drinks which can make them hard to consume during game time.

Pro Iso is light to drink whilst still delivering the same carbohydrate level found in isotonic formulas.  We have also launched a zero calorie electrolyte version called Pro Zero and this range is ideal for hydration outside of training.”

Pro Iso is unique in its electrolyte ratio due to the higher potassium and lower sodium levels along with the dual source of carbohydrates. This provides improved energy delivery during exercise as well as hydration.

To mark the announcement of the new WRU deal, members of the Welsh squad made public appearances at Asda stores across the region.   Wales captain Sam Warburton praised the new deal. “The squad welcome the news that Pro Iso has extended its deal with the WRU as our official supplier. The drinks achieve exactly what Jon has set out to do and we are all really pleased with them.”

Radnor Hills was approached by Jon Williams to help manufacture and bring Pro Iso to the market place back in 2013.  “We couldn’t be more delighted to manufacture this unique product, and are delighted that it has endorsement from the WRU. Jon’s knowledge and experience in this sector is second to none, but our role is to increase its distribution so everyone can enjoy the benefits of Pro Iso said William Watkins, Radnor Hills MD

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