Answer
Gaviscon Advance Mint Chewable tablets contain 4.5 mg aspartame per tablet, a source of phenylalanine, which may be harmful to people with phenylketonuria because their bodies cannot remove phenylalanine properly, causing it to build up.
Sources for this answer
- Gaviscon Advance Mint ChewableReckitt Benckiser Healthcare (UK) Ltd · emc · SmPC §4.4 Special warnings and precautions for use · Version 9Document updated
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