“Swear by these on my 15k plus runs! Really help with tired legs. Generally about 10/15mins to take effect with around 20mins after for next one if the run length needs. I'll take 2 for 15k and 3 for a 21.1k which is my current limit. Working towards a 50k ultra so some experimental work needed. Never had any stomach issues even without water. Highly recommend”
