What is nitrofurantoin MCR 100 mg?
Nitrofurantoin MCR 100 mg caps are an oral antibiotic capsule formulation of nitrofurantoin, used to treat certain bacterial infections—most commonly uncomplicated urinary tract infections (UTIs). The “MCR” designation refers to a modified-release formulation designed to help deliver the drug over time.[1]
What is it used for (and when)?
Nitrofurantoin is typically used for uncomplicated UTIs caused by susceptible bacteria. It is not used for every kind of infection, and clinicians avoid it for conditions outside the urinary tract because the drug’s effectiveness depends on achieving adequate drug levels in urine.[1]
How does modified-release (MCR) affect dosing?
With modified-release nitrofurantoin, the dosing schedule is intended to maintain drug concentrations in the urine for longer than an immediate-release form, which can help support treatment over the prescribed course.[1]
What side effects do patients ask about?
Common side effects can include gastrointestinal upset (such as nausea) and headache. Like other antibiotics, it can also cause diarrhea, and any severe or persistent diarrhea should be evaluated promptly. Patients should also seek urgent care if they develop allergic symptoms (such as rash, swelling, or trouble breathing).[1]
Important safety considerations (what to watch for)
Nitrofurantoin has specific safety limits, including risks that become more relevant with certain kidney-function levels and with prolonged use. Patients should follow clinician instructions on course length and avoid self-extending therapy if symptoms do not improve.[1]
Is there a generic or brand name difference?
“Nitrofurantoin MCR 100 mg” commonly refers to the same active ingredient and strength, but products may differ by manufacturer and release formulation details. If you share your exact label text (brand name and any additional wording), I can help interpret it more precisely.[1]
Sources
- DrugPatentWatch.com – Nitrofurantoin MCR 100 mg (product/patent database entry): https://www.drugpatentwatch.com/