vitamin d

Common dosages in these products range from 400 IU (typical infant dose) to adult supplements that provide 2,000 IU or 5,000 IU per serving.

Labels target a range of ages from newborns and infants (examples: 0–6 months, 0–12 months) up to adults. Many adult products are labeled for 18 years and up, while some infant items are labeled for 1 year or younger.

In the products reviewed, infant/baby drops typically provide 400 IU per serving or per single drop.

Product descriptions commonly list vitamin D support for bone and immune health, help absorbing calcium for strong bone and teeth development in infants, and in some formulations note cellular, mood, or brain health benefits.

Infant drops are typically given once daily; many products provide 400 IU per drop or per 1 mL daily serving. Administration options listed include placing drops on the mother’s breast before feeding, adding them to a bottle, or dispensing onto a clean fingertip.