Trace Minerals Research Endure Performance Electrolyte -- 4 fl oz

What the brand says

ENDURE is a special blend of essential electrolytes your body needs to perform at optimum levels of energy, stamina, and hydration during competition or any strenuous activity. Proper hydration helps to reduce the incidence of cramps and muscle fatigue so you can endure longer. And it contains no sugar or additives to weigh you down. Get the edge you need to perform at your best with ENDURE.