Hidroxil B12 B6 B1 is a tradename that contains several active ingredients in its composition: Vitamin B1 Substances (Very Low Risk) Vitamin B12 Substances (Very Low Risk) Vitamin B6 (Very Low Risk) Since each active ingredient of this product may have a different level of risk for breastfeeding, we establish that of the product with higher risk. For more information (pharmacokinetics, references, ...) tap each active ingredient. Note: The composition of certain tradenames varies in each country. Please, make sure this is the composition of the tradename you are looking for..