Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes. Studies on effects in pregnancy have not been done in either humans or animals. It is not known whether methylene blue passes into breast milk. Although most medicines pass into breast milk in small amounts, many of them may be used safely while breast-feeding. Mothers who are taking this medicine and who wish to breast-feed should discuss this with their doctor.
Babies are especially sensitive to the effects of methylene blue.
This may increase the chance of side effects during treatment. Therefore, it may not be known whether they work exactly the same way they do in younger adults. Although there is no specific information comparing the use of methylene blue in the elderly with use in other age groups, this medicine is not expected to cause different side effects or problems in older people than it does in younger adults. Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary.