Is SLEEP carbonated? Jenna Bennett February 18, 2021 18:13 Updated Our products are drink mixes, so you can add it to seltzer water if you like it bubby. Related articles Is SLEEP addictive or habit-forming? I'm pregnant and/or breastfeeding, can I drink SLEEP? Can I drink SLEEP in addition to my melatonin supplement? What are the ingredients in HYDRATE? Is SLEEP kosher? Comments 0 comments Please sign in to leave a comment.