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# Breastfeeding and Vitamin D Overdose
- URL: https://www.foodconsumer.org/breastfeeding_and_vitamin_d_overdose_0616100130/
- Published: 2010-06-16T14:25:00.000Z
- Updated: 2026-09-15T12:51:55.000Z
- Description: The FDA warns that infants should not exceed the recommended 400 IU of vitamin D a day and tells caregivers to use only the dropper packaged with the product. Overdose can cause nausea, vomiting, appetite loss, excessive thirst, constipation and muscle weakness.
- Author: Rachel Stockton
- Tags: Nutrition, Vitamin D, Breastfeeding, #vivvo-import

Most breastfed babies, or those who are fed a combination of breast milk and formula are given Vitamin D supplements to ensure they are getting the 400 international units (IU) a day recommended by the American Academy of Pediatrics. This recommendation is to prevent possible bone problems such as thinning, soft, and misshaped bones in vitamin deficient babies.

According to the Food and Drug Association report posted June 15, 2001, “"It is important that infants not get more than the recommended daily amount of vitamin D," says Linda M. Katz, M.D., M.P.H., interim chief medical officer in FDA's Center for Food Safety and Applied Nutrition, "Parents and caregivers should only use the dropper that comes with the vitamin D supplement purchased." 

The FDA Recommendations:

\-If your infant is being fully or partially fed with infant formula, check with your pediatrician or other health care professional before giving the child vitamin D supplements.

\-Use only the dropper that comes with the product as it is manufactured specifically for that product. Do not use a dropper from another product.

\-Ensure the dropper is marked so that the units of measure are clear and easy to understand. Also make sure that the units of measure correspond to those mentioned in the instructions.

\-Keep the vitamin D supplement product with its original package so that you and other caregivers can follow the instructions. Follow these instructions carefully so that you use the dropper correctly and give the right dose.

The report continues, “There are serious side effects of Vitamin D overdose in babies; excessive vitamin D can cause nausea and vomiting, loss of appetite, excessive thirst, frequent urination, constipation, abdominal pain, muscle weakness, muscle and joint aches, confusion, and fatigue, as well as more serious consequences like kidney damage.”

Every parent wants to do all they can to keep their baby healthy. Always consult with your health care professional before starting any supplements, and with any questions or concerns you have about your child’s health.

Laura King