First Endurance prides itself on doing the research necessary to engineer the best products in the world.  With the launch of the new EFS drinks, we have updated the EFS research packet to reflect all the new upgrades.   EFS drink upgrades include:Series of NEW First Endurance EFS SILVER Products

-Higher level of electrolytes

-Switch to Dicalcium and Dimagnesium malates

-addition of 700mg malic acid

-Switch to Ajipure Amino Acids

-ALL new flavors

EFS Research Packet