Also tell your health care professional if you are allergic to any other substances, such as foods, sulfites or other preservatives, or dyes. Additionally, when hydrochlorothiazide is used during pregnancy, it may cause jaundice, blood problems, and other side effects in the newborn baby. Therefore, it is important that you check with your doctor immediately if you think that you may be pregnant . It is not known whether losartan passes into breast milk. However, it does pass into the milk of lactating rats.
Hydrochlorothiazide does pass into breast milk.
Be sure that you discuss this with your doctor if you decide to breast-feed while taking these medicines. Therefore, it may not be known whether they work exactly the same way as they do in younger adults. Although there is no specific information comparing the use of losartan and hydrochlorothiazide combination 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.