Can I drink water during Glow15 fast hours? Customer Service July 11, 2018 16:54 During your fasting hours you can have water, AutophaTea™ with no added oil (coconut, MCT, etc.) and black coffee. Related articles Can I have water with lemon during my Glow15 fast? Can I use Trehalose? Can I have sweetner in my coffee or tea during Glow15 fasting hours? Can I drink coffee during Glow15 fasting hours? What Omega 3 is recommended? Comments 0 comments Please sign in to leave a comment.