I love Liquid Caffeine! I have been doing “keto and Intermittent fasting” now for about a year and unfortunately for me coffee makes me nauseous and just feel sick. But since I found Liquid Caffeine I still get my morning “pick me up” without breaking my fast or any extra stuff (i.e. sugar, food coloring and a bunch of other stuff I can’t pronounce). Best recipe: 8oz heated water, a half of a lemon juiced, 2 pumps of liquid caffeine. No better way to start the day!