Tejal Somvanshi
Expectant parents weighing their birth plan are facing a decision with higher stakes than many realize: skipping the routine newborn Vitamin K shot, or substituting unregulated oral drops, is linked to a sharp national rise in infant brain bleeds — and a Texas case, examined through a state medical board, shows what can go wrong when it happens.
The American Academy of Pediatrics has recommended a single Vitamin K shot within six hours of birth since 1961, because babies are born with naturally low levels of the nutrient and breast milk provides very little. A study of more than 5.2 million infants published in JAMA found that missed shots more than doubled between 2017 and 2025, from 3.1% to 6.8% of births, and infants who missed the shot had a 47% higher risk of any bleeding and more than double the risk of bleeding inside the skull. A separate JAMA Pediatrics study of 11 million infants found diagnosed Vitamin K deficiency bleeding surged 347% over the same period, with only about 19% of those affected infants having documented injectable prophylaxis at birth. These are large health-record studies showing a strong association, not a controlled trial proving every individual case.
If you are considering skipping the shot or relying on oral Vitamin K drops, know that no oral Vitamin K product is FDA-approved for U.S. newborns, and oral regimens are considered less reliable and less effective than the recommended injection. If you notice unusual bleeding, bruising, or other possible signs of a bleeding emergency in a newborn, treat it as a medical emergency: call emergency services or go to the nearest emergency department immediately rather than trying to judge which facility to drive to — transfer and treatment decisions belong to the treating clinicians.
Why Refusals Are Rising, and What a Texas Case Revealed
The CDC classifies this bleeding risk into three windows: early (the first 24 hours), classic (days two through seven), and late (one week to six months, when 30% to 60% of cases involve bleeding inside the skull). ProPublica’s investigation examined the case of an infant named Gwen Biesenbach, whose parents had chosen oral drops over the shot and who was later treated at a freestanding Texas emergency room; the case was reviewed by the Texas Medical Board rather than pursued as a civil malpractice suit, after the family’s malpractice attorney could not secure the supporting medical opinion Texas law requires to proceed. According to ProPublica’s reporting, the physician involved did not immediately administer Vitamin K, and specialists interviewed said the medication should be given promptly once deficiency bleeding is suspected, with no medical downside to giving it quickly — though it cannot reverse bleeding that has already happened, and severe cases may also require blood products. The Texas Medical Board’s order found the physician failed to recognize the bleeding disorder and transfer the infant promptly.
A Gender Gap in Who Gets the Shot
Health-record data analyzed by Truveta — drawn from more than a million births, not a full national registry — found newborn girls were less likely to have a documented Vitamin K injection than boys as of mid-2026 (8.9% versus 7.3% undocumented). Researchers have suggested, but not established, that parents of boys may more often accept the injection to meet hospital circumcision requirements; treat that explanation as a proposed hypothesis rather than a confirmed cause.
Are oral Vitamin K drops as effective as the Vitamin K shot for babies?
No. The American Academy of Pediatrics and CDC say oral Vitamin K drops are not FDA-approved for U.S. newborns and are considered less effective and less reliably absorbed than the single intramuscular shot, which provides protection that lasts for months from one dose.
Researchers estimated roughly one additional bleeding event for every 114 newborns who went without the shot, based on the JAMA study’s data. According to ProPublica, the Biesenbach family chose the Vitamin K shot for their next two children.
