Yes, according to EFSA and the FDA. It has been approved for use since the 1980s and extensive safety reviews have not identified serious health risks. Some ongoing research is examining effects on gut bacteria, but no conclusions have been reached. It is considered safe at normal dietary levels.

Does E950 spike blood sugar?

Acesulfame K itself does not contain calories and does not directly raise blood glucose. However, some research suggests that artificial sweeteners may affect insulin response indirectly. The evidence is mixed, and most diabetes organisations consider acesulfame K acceptable for people managing blood sugar.

Yes. Acesulfame potassium is a synthetic chemical compound and does not contain any animal-derived ingredients. It is suitable for vegans and vegetarians.

Sweetener

What is E950? (Food Additive Explained)

E950 is acesulfame potassium (acesulfame K) — an artificial sweetener approximately 200 times sweeter than sugar. It's calorie-free and widely used in diet drinks, sugar-free confectionery, tabletop sweeteners, and low-calorie products, often in combination with other sweeteners.

What is E950?

Full name: Acesulfame K (Acesulfame Potassium)

E950 is a synthetic sweetener discovered in 1967 by German chemist Karl Clauss. It's a white crystalline powder with a chemical name of potassium 6-methyl-2,2-dioxo-oxathiazin-4-olate. Unlike aspartame, it's heat-stable (can be used in baking) and has a long shelf life. It's often combined with aspartame (E951) or sucralose (E955) because it has a slightly bitter aftertaste on its own that other sweeteners mask.

What does E950 do in food?

E950 provides intense sweetness without calories. It's not metabolised by the body — it passes through unchanged and is excreted in urine. Because it's 200 times sweeter than sugar, only tiny amounts are needed. It's often blended with other sweeteners to create a more sugar-like taste profile. In diet drinks, a typical combination is acesulfame K + aspartame, which together provide a rounder sweetness than either alone.

Where is E950 found?

E950 is commonly found in:

Diet and zero-calorie soft drinks
Sugar-free chewing gum
Tabletop sweeteners (sachets and tablets)
Low-calorie yoghurts and desserts
Sugar-free confectionery
Protein shakes and sports supplements

Is E950 bad for you?

E950 is approved by EFSA with an ADI of 9 mg/kg body weight per day, and by the FDA, which considers it safe for general use. It has been extensively studied since the 1970s, and major safety reviews have not found evidence of carcinogenicity or other serious health risks. However, some scientists have raised questions about potential effects on gut bacteria and insulin response — research in these areas is ongoing but inconclusive. The broader debate about artificial sweeteners centres on whether they truly help with weight management or may inadvertently encourage sweet cravings.

Why E950 matters for food choices

E950 is found almost exclusively in products designed to replace sugar — diet drinks, sugar-free options, and low-calorie alternatives. These products are often marketed as healthier choices, but under NOVA they're firmly in Group 4 (ultra-processed). The presence of intense artificial sweeteners is one of the defining characteristics of ultra-processed foods. Whether you're better off with a sugar-free drink containing E950 or a smaller serving of the sugar-sweetened version is a question worth considering.

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