Answer: La Croix is a zero-carb sparkling water that's popular in the keto community.
La Croix is entirely keto-friendly, as it contains zero carbs and is free of artificial sweeteners. La Croix flavors their drink by adding essential fruit oils but in small enough quantities that any sugars in the fruit won't impact your ketosis. In fact, YouTuber Justin Bravo performed a semi-scientific experiment in which he verified that drinking La Croix had zero effect on his blood ketone level.
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