Is Aspartame safe during pregnancy?
Considered safe by FDA within normal intake; avoid it if you have PKU. Stay within normal amounts in pregnancy.
What the sources say
FDA says aspartame is safe for the general population under approved uses and disagrees with IARC's 2023 "possible carcinogen" label; people with phenylketonuria (PKU) should avoid or restrict it. A peer-reviewed review rates aspartame acceptable in pregnancy within the acceptable daily intake (ADI). LactMed notes aspartame isn't detectable in breast milk; avoid it if nursing a baby with PKU, and one study linked low-calorie sweeteners to infant vomiting and a possible autism association that needs confirmation.
Common alternatives
Also listed as
nutrasweet, equal sweetener, sugar twin, e951, contains phenylalanine, phenylketonurics: contains phenylalanine, l-aspartyl-l-phenylalanine methyl ester, aspartyl-phenylalanine methyl ester
Sources
- FDA: Aspartame and Other Sweeteners in Food
- NIH/PubMed (peer-reviewed review): Non-caloric sweeteners in pregnancy and lactation (Cavagnari, 2020)
- NIH LactMed: Aspartame
Last reviewed . This is general information, not medical advice. Ask your doctor or midwife about your own situation.