Quick answer
Aspartame is commonly used in diet, sugar-free, or reduced-sugar products. Products with aspartame must identify it in the ingredient list, and labels must alert people with PKU that the product contains phenylalanine.
Why it is used
Food makers use aspartame to add sweetness while using much less sweetener by weight than table sugar. It is not heat stable, so it is less common in foods that need baking heat.
Where you might see it
- Diet soft drinks
- Sugar-free drink mixes
- Light yogurts
- Sugar-free gum
- Tabletop sweeteners
What to check on the label
- Look for aspartame by name in the ingredient list.
- If you have PKU, follow the phenylalanine warning and healthcare guidance.
- Compare total sugars, added sugars, and serving size instead of judging the product by sweetener name alone.
A careful note
Grocery Savvy explains label context. It does not provide personalized guidance for PKU, diabetes, weight management, or sweetener intake.
Sources and review
This entry is written for educational label context and reviewed against source-backed internal references.
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