Answer: Coffee-Mate's Creamy Chocolate is low carb but contains small amounts of non-keto sweeteners
At first glance, Coffee-Mate's Sugar-Free Creamy Chocolate coffee creamer is appealing. Each serving contains only 30 calories and 2 g of net carbs.
The problem is in the ingredient list. Most of the ingredients are benign, but the last two ingredients are non-keto sweeteners: sucralose and acesulfame potassium. Nestle does not publish the exact quantities of the ingredients, but their position at the end of the ingredient list indicates that these sweeteners make up a small proportion of this creamer. You may choose to experiment with this creamer, but if you find yourself falling out of ketosis, this creamer is the likely culprit.
For flavoring your coffee, it's better to stick with keto classics, such as heavy cream or stevia.