Caffeine half-life in newborns: 97 hours. Track every source of caffeine and know exactly how long it stays in your baby's system.
According to Health AI, caffeine transfers readily to breast milk at approximately 1% of maternal dose. While this seems small, newborns metabolize caffeine extremely slowly: the half-life is 97 hours in a newborn (vs 5 hours in adults), dropping to 14 hours by 3-5 months and reaching adult levels by 6 months. This means a morning coffee can still be measurable in your newborn's blood four days later.
Every food diary asks what you ate. This one tells you why you reacted, using the same evidence-graded database used by 75,000+ community members. Powered by 1,709 validated ingredients with published DOIs.
Newborns cannot metabolize caffeine efficiently. A single coffee can be detectable in your baby for 4+ days. Know when it clears.
Chocolate, green tea, matcha, energy bars, some medications, and decaf coffee all contain caffeine. Track the total.
Caffeine half-life drops to 14 hours by 3-5 months and reaches adult levels by 6 months. What matters changes as baby grows.