Nitrofurantoin: The Antibiotic for Urinary Tract Infections
What is Nitrofurantoin?
Nitrofurantoin is an antibiotic primarily used for the treatment of urinary tract infections (UTIs), mainly caused by Escherichia coli (E. coli) and other susceptible bacteria. It works by interfering with bacterial DNA and preventing their replication, which helps to eradicate the infection.
How Nitrofurantoin Works
Nitrofurantoin is a bactericidal antibiotic that damages bacterial DNA, preventing bacteria from reproducing and ultimately killing them. It is most effective in the lower urinary tract (bladder and urethra) and is typically used for acute cystitis (bladder infections).
When to Use Nitrofurantoin
● Urinary Tract Infections: Nitrofurantoin is primarily used for treating uncomplicated UTIs caused by susceptible organisms, especially cystitis (bladder infections).
● Prophylaxis for Recurrent UTIs: It is also used for preventing recurrent urinary tract infections in individuals with a history of frequent infections.
Dosage
● Adult Dose for UTI:
● 50 mg to 100 mg orally, four times daily, for 5-7 days depending on the infection severity.
● For chronic prophylaxis, the usual dose is 50 mg to 100 mg once daily, typically at bedtime.
● Pediatric Dose: For children over 1 month, the dose is typically 1 mg/kg body weight per day, divided into 2-4 doses, with a maximum dose of 200 mg per day.
Side Effects
● Common Effects: Nausea, vomiting, abdominal pain, and diarrhea.
● Serious Adverse Effects: Liver toxicity, pulmonary toxicity (including lung inflammation), and peripheral neuropathy (nerve damage). Long-term or high-dose use can increase the risk of these serious side effects.