Which type of warning is necessary for certain OTC products for the protection of nursing women?

Certain OTC (over-the-counter) products require specific ingredient warnings for nursing women primarily to ensure the safety of both the mother and the infant. Ingredients that could potentially pass through breast milk and affect the nursing baby necessitate clear labeling so that nursing mothers can make informed decisions about their medication use. These warnings may include specific concerns about common ingredients that have been identified to possibly cause adverse effects in infants or that are known to alter the composition of breast milk.

In this context, the other types of warnings, while important, do not specifically address the unique concerns associated with nursing. Warnings against overdose and misuse focus more on the general safe usage of the product rather than the specific implications for breastfeeding. Pregnancy-related risks, while significant, do not apply to nursing women who are already in a different stage of motherhood. Therefore, specific ingredient warnings are crucial for protecting nursing children from potentially harmful substances.