[ stir-kuh ] meaning strength in Old Norse.

The Styrkr sports fuel range is the culmination of many months of research and development with one clear focus: to help everyday athletes reach their next endurance goal.

All Styrkr drinks, gels and salts have been specifically engineered to produce unique effects in the body – specifically, the bloodstream – that reduce overall fatigue and energy expenditure while maintaining power and increasing output throughout endurance activity.