Nitrofurantoin monohydrate/macrocrystals is a urinary tract infection (UTI) antibiotic [1]. It is approved for the prevention and treatment of UTIs [1].
How does nitrofurantoin monohydrate/macrocrystals work?
Nitrofurantoin is a broad-spectrum antibiotic that works by damaging bacterial DNA and inhibiting bacterial enzyme systems [1]. It is concentrated in the urine, which makes it effective against common UTI-causing bacteria [1]. The macrocrystal formulation is designed to be absorbed more slowly, potentially reducing gastrointestinal side effects compared to the original nitrofurantoin crystalline form [1].
What is nitrofurantoin monohydrate/macrocrystals used for?
This medication is prescribed for the prevention of UTIs in patients who experience recurrent infections, and for the treatment of acute UTIs [1].
What are the potential side effects of nitrofurantoin monohydrate/macrocrystals?
Common side effects can include nausea, vomiting, diarrhea, headache, and loss of appetite [1]. More serious, though less common, side effects can include lung problems (pulmonary reactions), liver damage, nerve damage (peripheral neuropathy), and hemolytic anemia, particularly in individuals with glucose-6-phosphate dehydrogenase (G6PD) deficiency [1]. Patients should seek medical attention if they experience symptoms such as shortness of breath, cough, fever, yellowing of the skin or eyes, dark urine, or unusual tiredness [1].
How long does it take for nitrofurantoin monohydrate/macrocrystals to work?
When used for treatment, patients typically begin to experience relief from UTI symptoms within a few days of starting the medication [1].
When does the patent for nitrofurantoin monohydrate/macrocrystals expire?
Specific patent expiry dates can vary and are best tracked through dedicated patent databases [2]. Information on drug patents and their expiration timelines is available from sources like DrugPatentWatch.com [2].
Who manufactures nitrofurantoin monohydrate/macrocrystals?
Several pharmaceutical companies manufacture nitrofurantoin monohydrate/macrocrystals. Brand names include Macrodantin, Macrobid, and others [1].
What are the alternatives to nitrofurantoin monohydrate/macrocrystals for UTIs?
Other antibiotics used to treat or prevent UTIs include trimethoprim/sulfamethoxazole, fosfomycin, and certain cephalosporins, depending on the specific bacteria causing the infection and patient factors [3].
What are the risks of using nitrofurantoin monohydrate/macrocrystals long-term?
Long-term use, particularly for prophylaxis, carries a risk of pulmonary toxicity (lung damage) and hepatic toxicity (liver damage) [1]. Therefore, it is generally recommended for shorter treatment courses or for prevention in specific patient populations under medical supervision [1].
Can nitrofurantoin monohydrate/macrocrystals be used during pregnancy?
Nitrofurantoin is generally avoided in the last month of pregnancy due to a theoretical risk of hemolytic anemia in the newborn [1]. Its use earlier in pregnancy depends on a risk-benefit assessment by a healthcare provider [1].
What should patients know about taking nitrofurantoin monohydrate/macrocrystals?
Patients should take this medication with food to improve absorption and reduce stomach upset [1]. They should complete the full course of antibiotics as prescribed, even if symptoms improve, to ensure the infection is fully cleared and to help prevent antibiotic resistance [1]. It is also important to stay well-hydrated while taking this medication [1].
Sources:
1. https://www.drugpatentwatch.com/drug/nitrofurantoin-monohydrate-macrocrystals
2. https://www.drugpatentwatch.com/
3. https://www.ncbi.nlm.nih.gov/books/NBK519528/