aspartame
Sweeteners
Trigger checker for aspartame
See aspartame rated across every trigger — FODMAP, histamine, salicylate, oxalate, tyramine and more — plus diet compatibility, all in one quick ingredient profile.
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Compare aspartame across criteria
Triggers
Diets
Serving size, prep, and portion notes for aspartame
Aspartame is clean right across the food-chemistry triggers: no histamine, no tyramine, no salicylate, no lactose, no gluten, no sulfites, and it is low FODMAP with no polyol content, so it does not behave like the sugar alcohols people confuse it with. It has one hard, non-negotiable caveat, and it is genetic rather than digestive: aspartame is built from aspartic acid and phenylalanine, so anyone with phenylketonuria must avoid it, which is why packs carry a "contains a source of phenylalanine" warning.
Watch for
Contains phenylalanine, so it is unsafe in phenylketonuria (PKU). This is the only absolute restriction on it and it is the reason for the label warning / Graded pro-inflammatory and not compatible with paleo or AIP, both diet-pattern notes rather than sensitivity triggers / Diet colas and energy drinks sweetened with aspartame usually also contain caffeine and phosphoric acid, so if a diet drink gives you headaches or reflux, log the whole drink before you pin it on the sweetener
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FAQ
What does the FODMAP rating mean for aspartame?
Low FODMAP: usually easier for most people, still watch portion size.
Is aspartame generally well tolerated?
Lectin (Avoid) and Histamine (Safe) Start with those if you react.
What should I check next?
Compare within the Sweeteners group.