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Doctor insights on: Nitrofurantoin

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Dr. Ira Katz
295 doctors shared insights

Nitrofurantoin (Overview)

Nitrofurantoin is an antibiotic which is marketed under the following brand names; niftran, furadantin, (nitrofurantoin) furabid, macrobid, macrodantin, nitrofur mac, nitro macro, nifty-sr, martifur-mr, uro-tablinen or nifuretten (in germany), martifur-100 (in india), urantoin, nifuran (in macedonia) and uvamin (in middle east). It is usually used in treating urinary tract infection. It is often used against e. Co.


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What is nitrofurantoin and its side effects?

What is nitrofurantoin and its side effects?

Urinary antiseptic: Often used to treat cystitis. It has a huge number of potential side-effects, most of which are too detailed to go into here. Long term it may produce potentially life-threatening changes in lung tissue. ...Read more

Dr. Ira Katz
295 doctors shared insights

Nitrofurantoin (Overview)

Nitrofurantoin is an antibiotic which is marketed under the following brand names; niftran, furadantin, (nitrofurantoin) furabid, macrobid, macrodantin, nitrofur mac, nitro macro, nifty-sr, martifur-mr, uro-tablinen or nifuretten (in germany), martifur-100 (in india), urantoin, nifuran (in macedonia) and uvamin (in middle east). It is usually used in treating urinary tract infection. It is often used against e. Co.


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Please describe the medication: nitrofurantoin?

Please describe the medication: nitrofurantoin?

Macrobid: Nitrofurantoin is an antibiotic which is marketed under the following brand names; niftran, furadantin, (nitrofurantoin) furabid, macrobid, macrodantin, nitrofur mac, nitro macro, nifty-sr, martifur-mr, uro-tablinen or nifuretten (in germany), martifur-100 (in india), urantoin, nifuran (in macedonia) and uvamin (in middle east). It is usually used in treating urinary tract infection. It is often used against e. Co. ...Read more

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I have been prescribed 50mg nitrofurantoin for 3 days (12tabs) for a uti. I have already taken 4 and feel no different, is this normal?

I have been prescribed 50mg nitrofurantoin for 3 days (12tabs) for a uti. I have already taken 4 and feel no different, is this normal?

Yes, but 50mg is low: Symptoms may take 2 - 3 days to subside. Most dr.S prescribe 100mg 3 or 4x a day, or Macrobid 100 mg twice a day. Need to get urine rechecked if symptoms persisit more than 3 days because infecting organism may not be sensitive to macrodantin. In which case another antibiotic like Bactrim or Cipro (ciprofloxacin) may be necessary. Suggest urine culture & sensitivity test is performed if infection still present. ...Read more

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I was just prescribed nitrofurantoin-macro 100mg 2x's a day for 5 days for a uti. I also have asthma. Are there any known complications with asthma?

Not usually: Occasionally this antibiotic does cause a pulmonary condition but it more likely to cause it in an asthmatic then a nonasthmatic. ...Read more

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Have a UTI but when use nitrofurantoin 5 days still have the same pain in back > what medicine for tissues active need to take and what period ?

Have a UTI but when use nitrofurantoin 5 days still have the same pain in back > what medicine for tissues active need to take and what period ?

Back pain and UTI: If your back pain is actually due to a UTI you should not be taking Nitrofurantoin since you probably have an upper tract infection. You really need to be fully evaluated by a doctor familiar with utis (infectious disease expert, urologist, nephrologist) and if not due to UTI your back pain also needs to be assessed differently. ...Read more

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Doctor told me to take 1 nitrofurantoin after & before intercourse. Within how many hours afterwards should I be taking it for it to be effective?

UTI prophylaxis: Nitrofurantoin Rxd for you to take before and after intercourse is mostly likely most likely is because you had been having recurrent UTIs after intercourse and this should decrease the number that you have. Since it is a medication that would normally have to be Rxd 4 times per day for regular treatment take the second dose within 6 hours after the first dose you took before intercourse. ...Read more

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What can be prescribed for a UTI if nitrofurantoin didn't work. Is there a second line drug?

Yes: It depends on allergies, other meds, whether or not your are pregnant, and whether or not a culture was done. Bactrim (sulfamethoxazole and trimethoprim) (a sulfa drug), ciprofloxin and Amoxicillin are common alternatives. If a culture was done, it generally directs your doctor to the right drug. ...Read more

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How long for nitrofurantoin UTI antibiotics to kick in?

How long for nitrofurantoin UTI antibiotics to kick in?

UTI: The action of this antimicrobial is very rapid, but the symptoms, which are a result of inflammation due to the infection, may persist for a day or two. If they persist for a longer time period see your doctor about a possible need to change antibiotics. ...Read more

Dr. Peter Ihle
138 doctors shared insights

Macrodantin (Definition)

Macrodantin is ...Read more


Dr. Jeffrey Wint
120 doctors shared insights

Furadantin (Definition)

Furadantin is ...Read more