To answer a question with a question, did you know that sugar substitutes are color-coded according to their main ingredient?
Pink packets (for example Sweet ‘N’ Low) contain saccharin, which doesn’t affect blood sugar levels because it isn’t metabolized i.e. it passes through the body unchanged.
Yellow packets (Splenda) contain sucralose, which is 600 times sweeter than sugar. It has no caloric value, however, and no effect on blood sugar.
Blue packets (Equal and NutraSweet) contain aspartame – a low-calorie sweetener 200 times sweeter than sugar, which is made up of two amino acids. It has no effect on blood sugar but is broken down by the body into its components, aspartic acid and phenylalanine, and a small amount of methanol. People who have the rare disease phenylketonuria, or PKU, should not eat or drink anything with phenylalanine. Products made with aspartame require a special disclosure to alert people with phenylketonuria.
Green packets contain stevia, a natural, zero-calorie substitute, or stevia blends. Stevia also has no effect on blood sugar.