Sugar Substitutes Compared: Erythritol, Stevia, Xylitol and More

Erythritol is a sugar alcohol that occurs naturally in some fruits and fermented foods. It has become one of the most popular sugar substitutes for good reason.

• Calories: Virtually zero (0.2 calories per gram vs. 4 for sugar)
• Sweetness: About 70% as sweet as sugar
• Blood sugar impact: Zero – does not raise blood sugar or insulin
• Taste: Clean sweetness with a slight cooling sensation on the tongue
• Digestive tolerance: Excellent – better tolerated than other sugar alcohols because 90% is absorbed in the small intestine and excreted unchanged
• Best for: Baking, coffee, general cooking. Closest to sugar in versatility

Downsides: It does not caramelize like sugar. In large quantities, some people notice a cooling aftertaste. It can crystallize in cold liquids.

Stevia:

• Calories: Zero
• Sweetness: 200–300x sweeter than sugar (use tiny amounts)
• Blood sugar impact: Zero
• Taste: Can have a bitter or licorice-like aftertaste, especially in lower-quality products
• Best for: Beverages, smoothies, dressings. Look for products that use Reb-A or Reb-M extracts, which have the least aftertaste

Monk Fruit (Luo Han Guo):

• Calories: Zero
• Sweetness: 100–250x sweeter than sugar
• Blood sugar impact: Zero
• Taste: Clean, pleasant sweetness with minimal aftertaste. Often considered the best-tasting zero-calorie option
• Best for: Everything – beverages, baking, cooking. Often blended with erythritol for easier measuring
• Downside: More expensive than other options

Allulose:

• Calories: 0.2–0.4 calories per gram
• Sweetness: About 70% as sweet as sugar
• Blood sugar impact: Minimal to none
• Taste: Remarkably similar to sugar. Browns and caramelizes like real sugar
• Best for: Baking, ice cream, sauces – anywhere you want sugar-like behavior
• Downside: Can cause digestive discomfort in large amounts. Less widely available

Xylitol:

• Calories: 2.4 per gram (40% less than sugar)
• Sweetness: Equal to sugar (1:1 replacement)
• Blood sugar impact: Low – GI of 7 compared to sugar's 65
• Taste: Very similar to sugar with a pleasant cooling effect
• Unique benefit: Proven to prevent tooth decay and cavities. Often used in sugar-free gum
• Warning: Extremely toxic to dogs – even small amounts can be fatal. Keep it away from pets
• Best for: Baking (1:1 sugar replacement), candy, gum

Other sugar alcohols to know:

• Sorbitol – Found in many "sugar-free" products. Can cause significant digestive issues
• Maltitol – Higher glycemic impact than other sugar alcohols. Often used in sugar-free chocolate but still raises blood sugar moderately
• Isomalt – Half as sweet as sugar. Mostly used in commercial sugar-free candy

The general rule with sugar alcohols: start with small amounts and increase gradually to assess your digestive tolerance.

The best substitute depends on your priorities:

For baking:

• First choice: Allulose (behaves most like sugar)
• Runner-up: Erythritol or a monk fruit/erythritol blend

For beverages:

• First choice: Monk fruit drops or liquid stevia
• Runner-up: Erythritol (dissolves well in warm drinks)

For 1:1 sugar replacement:

• First choice: Xylitol (if no dogs in the house)
• Runner-up: Erythritol (use slightly more since it is 70% as sweet)

For the most natural option:

• Monk fruit – extracted from a real fruit with centuries of use in traditional Chinese medicine

The best long-term strategy: Use substitutes as a bridge, not a crutch. The real goal is to retrain your palate to enjoy less sweetness overall. After 21 days without sugar, you will be surprised how sweet a simple apple tastes.