Nitrofurantoin
Nitrofurantoin (Macrodantin, Macrobid) is a targeted antibiotic medication widely used to resolve bacterial infections in the lower urinary tract. This listing features 2 formulations, including Furadantin and Macrobid, which are available to patients to address specific bacterial sensitivities.
Furadantin
Cystitis, Urinary Tract Infection
50 · 100mg
Nitrofurantoin 50mg and 100mg tablets, used for cystitis and urinary tract infection. Bacterial flavoproteins reduce it to reactive intermediates.
Key points
- Because it concentrates in urine rather than the bloodstream, its antibacterial action stays largely confined to the urinary tract.
- It is commonly used for cystitis and other urinary tract infections, working by damaging the DNA bacteria need to grow.
- It is available as a standard tablet or a prolonged-release hard capsule, with the choice depending on dosing needs and tolerance.
- Because it is filtered through the kidneys, adequate kidney function is needed before starting treatment, and mild nausea or headache can occur.
What is Nitrofurantoin?
Nitrofurantoin is an antimicrobial agent belonging to the class of nitrofuran antibiotics. It focuses specifically on disinfecting the urinary tract by inhibiting the growth and reproduction of bacteria. Because it concentrates primarily in the urine rather than the bloodstream, it is highly effective for localized bladder issues.
What Nitrofurantoin is used for
Use cases primarily involve treating or preventing conditions like Cystitis and the broader set of Urinary Tract Infection (UTI). This medication belongs to the broader Antibiotics category designed to manage susceptible bacterial pathogens. It acts locally within the urinary system to resolve symptoms and eliminate the underlying bacterial cause.
How does Nitrofurantoin work?
Nitrofurantoin works by damaging the DNA of bacteria that causes infections. Once ingested, the compound is processed and excreted into the urine, where it reaches the high concentrations required to stop bacterial protein synthesis. Because it stays active within the bladder and urethra, it treats the source of the infection with minimal impact on the rest of the body.
Nitrofurantoin brands and forms
Patients can find this medication in various formulations that dictate how the active ingredient is released into the system. Options include the standard Tablet and the Prolonged-release capsule, hard. Choosing between these varieties depends on the specific dosing required and how your system tolerates the medication. These brands and generic versions aim to provide consistent outcomes for users.
Safety overview for Nitrofurantoin
What to check before using this medicine
Verify that your kidney function is adequate, as this medication is primarily filtered and excreted through the urine. Discuss any history of allergic reactions to antibiotics or existing digestive or nerve conditions with a clinician.
Possible reactions and tolerability
Some people may experience mild nausea, headache, or changes in urine colour. These effects are generally manageable, but any persistent discomfort or signs of an allergic reaction warrant immediate attention.
Interactions and health factors
Certain antacids or medications that alter urine pH can interfere with the way this agent works. Product labelling and verified clinical sources remain the correct references for specific contraindications, interactions and reactions.
Further reading
What is nitrofurantoin used for?
Nitrofurantoin is used to treat or prevent cystitis and urinary tract infections. It acts locally within the urinary system to deal with susceptible bacteria.
How does nitrofurantoin work?
Nitrofurantoin damages the DNA of bacteria that cause infection, which stops them growing. Because it is excreted into the urine, it reaches high concentrations there and acts on bacteria in the urinary tract.
How long does nitrofurantoin take to work?
Nitrofurantoin starts to work within 1 to 2 hours and its duration is 12 hours.
What are the common side effects of nitrofurantoin?
Mild nausea, headache or changes in urine colour can occur. More moderate effects include diarrhoea and abdominal ache, and any persistent discomfort should be checked by a doctor or pharmacist.
Can nitrofurantoin be taken with other medicines?
Certain antacids or medicines that alter urine pH can interfere with how it works. Magnesium trisilicate and probenecid are listed interactions, so speak to a doctor or pharmacist about what you are taking.
Who should not take nitrofurantoin?
It is not suitable for people with renal impairment or a hypersensitivity to nitrofurantoin.
What nitrofurantoin products are available?
Products containing nitrofurantoin include Macrobid and Furadantin. Compare forms, strengths and packs in the listings above.
What brand names is nitrofurantoin sold under?
Besides the products listed here, nitrofurantoin is sold under brand names such as Macrodantin. Names differ from country to country, so the active ingredient is the surest way to compare.
Is nitrofurantoin available over the counter in Thailand?
Yes. In Thailand nitrofurantoin is sold by pharmacists without a prescription, and Yasabai does not ask for one either. We are an online store, not a dispensing pharmacy; we arrange your order and delivery on your behalf.
Ordering without a prescription →Do you deliver nitrofurantoin to Thailand?
Yes. Our pharmacy partners ship from India to Thailand and across Asia in discreet packaging. Standard Airmail takes up to 3 weeks; Express Tracked Courier takes up to 1 week.
How ordering works →