SCIENZA
Sweeteners on keto: which to use and which to avoid
Published on June 16, 2026
Not all sweeteners are the same: which ones don't raise blood sugar and are suitable for keto, and which are better limited.
Sugar on keto is to be avoided because it raises blood sugar and insulin (we explain it in glucose and insulin). But the craving for something sweet remains: which sweeteners can you use without leaving ketosis?
✅ Suitable for keto
They have minimal or no impact on blood sugar:
- Erythritol: a well-tolerated sugar alcohol, almost zero calories.
- Stevia: of plant origin, very sweetening.
- Monk fruit: natural, with no glycemic impact.
- Allulose: a taste very similar to sugar.
⚠️ To limit or avoid
- Maltitol and other "cheap" sugar alcohols: they can raise blood sugar more than expected and cause digestive upset.
- "Brown" sugar, honey, syrups: they're still sugar, plain and simple.
- "Hidden" sweeteners in packaged "sugar-free" products: always read the label.
In practice
Choose erythritol, stevia or monk fruit to sweeten drinks and recipes. And if you're unsure about a food, check its carbs with the calculator.
Informative and educational article; it does not constitute personalized medical or nutritional advice.
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