To reduce the development of drug-resistant bacteria and maintain the effectiveness of Macrobid and other antibacterial drugs, Macrobid should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria. Allergan’s websites may ask your browser to store cookies, a small piece of data, on your computer or mobile device. A cookie can be used to enable a site to remember information that you previously input. Skipping doses or not completing the full course of Macrobid can decrease its effectiveness and can lead to the growth of bacteria that are resistant to the effects of Macrobid. What are the possible food and drug interactions associated with this medication? Chaque capsule de gélatine dure, opaque, noire et jaune, portant la mention « Macrobid » imprimée sur la partie noire et « Norwich Eaton » sur la partie jaune contient l'équivalent de 100 mg de nitrofurantoïne sous forme de macrocristaux et de monohydrate de nitrofurantoïne. Drug or Test. Interaction. Comments. Antacids (magnesium trisilicate) Decreased rate and extent of absorption of nitrofurantoin b c e. Avoid concomitant use b c e acute, subacute, or chronic pulmonary reactions have been observed in patients treated with nitrofurantoin. if these reactions occur, macrobid should be discontinued and appropriate measures taken. To reduce the development of drug-resistant bacteria and maintain the effectiveness of Macrobid and other antibacterial drugs, Macrobid should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria. Macrobid drug interactions (in more detail) Further information Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use Macrobid only for the indication prescribed. and drug concentrations inhibitory of bacterial growth are reached or exceeded in the urine. Plasma levels attained with MacroBID usually do not exceed 1 µg/mL and are not Urinary tract infections due to susceptible strains of Escherichia coli, enterococci, Staphylococcus aureus, and certain susceptible strains of Klebsiella andEnterobacter species.