⚠️CautionCurated
Diet Coke
Diet Coke has about 46mg of caffeine per 12oz can — less than half a cup of coffee. The caffeine is well within manageable limits. The artificial sweetener (aspartame) is considered safe in moderate amounts by major health organizations, though some parents choose to limit it.
Up to 300mg caffeine/day total (~46mg per 12oz can)
The caffeine in Diet Coke is modest, and a can or two a day is unlikely to affect your baby. Aspartame, the primary sweetener, is approved by the FDA and considered safe at normal dietary levels. Very small amounts do pass into breast milk, but research hasn't shown adverse effects at typical intake. If you prefer to avoid artificial sweeteners entirely, regular cola or unsweetened sparkling water are alternatives.
Safer Alternatives:
Always confirm with your doctor or lactation consultant before making dietary changes while breastfeeding.
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