They shouldn't. If you're on prenatal vitamins and having difficulty breathing, you may want to switch brands. I suggest going to a healthfood store and buying from there because they have more of the vitamins that are needed and the vitamins are derived from food, not from synthetic ingredients.
Information on this site is provided for informational purposes only.
It is not meant to substitute for medical advice provided by your physician or other medical professional.
If you have or suspect that you have a medical problem, promptly contact your physician or health care provider.
