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Nitrofurantoin belongs to the class of medications called antibiotics. It is used to treat Urinary Tract Infections or bladder infections caused by certain types of bacteria.
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Nitrofurantoin belongs to the class of medications called antibiotics. It is used to treat Urinary Tract Infections or bladder infections caused by certain types of bacteria. It works by killing the bacteria and preventing them from reproducing.
Macrobid may be available under multiple brand names and/or in several different forms. Any specific brand name of Macrobid may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of Macrobid may not be used for all of the conditions discussed here.
Your doctor may have suggested this medication for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking this medication, speak to your doctor. Do not stop taking Macrobid without consulting your doctor.
Do not give Macrobid to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take this medication if their doctor has not prescribed it.
We sort your medication into clearly labeled, individual packs so you can be sure you're taking the right dose at the right time.
The recommended dose of this medication for adults and children over 12 years old is 100 mg 2 times daily. Nitrofurantoin should be taken with food or milk to reduce the risk of stomach upset.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is important to take this medication exactly as prescribed by your doctor. Finish all of this medication, even if you start to feel better. If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store Macrobid at room temperature, protect it from light and moisture, and keep it out of the reach of children.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.
Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.
The side effects listed below are not experienced by everyone who takes Macrobid. If you are concerned about side effects, discuss the risks and benefits of Macrobid with your doctor.
The following side effects have been reported by at least 1% of people taking Macrobid. Many of these side effects can be managed, and some may go away on their own over time.
Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.
Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.
Check with your doctor as soon as possible if any of the following side effects occur:
Stop taking the medication and seek immediate medical attention if any of the following occur:
Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking Macrobid.
Our pharmacists are happy to answer your questions. Get in touch by text, live chat, phone or email. We're standing by 7 days a week.
Each opaque, black and yellow, hard shell gelatin capsule, imprinted "Macrobid" on the black portion and "Norwich Eaton" on the yellow portion, contains the equivalent of 100 mg of nitrofurantoin in the form of nitrofurantoin macrocrystals and nitrofurantoin monohydrate. Nonmedicinal ingredients: carbomer 934P, compressible sugar, corn starch, D&C Yellow No. 10, edible gray ink, FD&C Blue No. 1, FD&C Red No. 40, gelatin, lactose, magnesium stearate, povidone, talc, and titanium dioxide.
Do not take nitrofurantoin if you:
Do not give Macrobid to infants under one month of age.
Your medication is delivered directly to you at no added cost. We even offer same-day delivery in select locations.
There may be an interaction between nitrofurantoin and any of the following:
If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:
An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.
Medications other than those listed above may interact with Macrobid. Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the Nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.
Before you begin using a medication, be sure to inform your doctor of any medical conditions or Allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use Macrobid.
Anemia: Rarely, nitrofurantoin may cause low levels of red blood cells. This is more likely to happen if you have the genetic condition G-6-PD deficiency. If you experience symptoms of reduced red blood cell count (anemia) such as shortness of breath, feeling unusually tired, or pale skin, contact your doctor as soon as possible.
Bacterial resistance: Misuse of an antibiotic such as nitrofurantoin may lead to the growth of resistant bacteria that will not be killed by the antibiotic. If this happens, the antibiotic may not work for you in the future. Although you may begin to feel better when you first start taking nitrofurantoin, you need to take all the medication exactly as directed by your doctor to finish ridding your body of the infection and to prevent resistant bacteria from taking hold. Do not take nitrofurantoin or other antibiotics to treat a viral infection such as The Common Cold; antibiotics do not kill viruses, and using them to treat viral infections can lead to the growth of resistant bacteria.
Discolouration of urine: Macrobid may turn your urine a rust yellow or brown colour. This is a normal effect of the medication and is not a cause for concern.
Kidney function: If you have reduced kidney function or Kidney Disease, discuss with your doctor how Macrobid may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Macrobid, and whether any special monitoring is needed.
Liver function: Nitrofurantoin may affect liver function. If you have liver problems, discuss with your doctor how Macrobid may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Macrobid, and whether any special monitoring is needed.
Lung inflammation: Rarely, some people taking this medication have experienced lung inflammation (interstitial lung disease), causing difficulty breathing. This complication can be serious and sometimes fatal. If you experience new or worsening shortness of breath or cough (with or without fever) at any time while you are taking nitrofurantoin, contact your doctor immediately.
Nerve damage: Tingling, numbness, or pain have been reported with the use of nitrofurantoin. These effects may be more likely to occur for people who have other conditions that are linked to nerve damage such as Diabetes, certain vitamin deficiencies, or fluid and electrolyte problems.
Overgrowth of organisms: The use of Macrobid may cause an overgrowth of microorganisms not killed by the medication, possibly causing yeast infections or resistant bacteria.
Pregnancy: Macrobid should not be used during pregnancy unless the benefits outweigh the risks. Do not use Macrobid if you are in labour or expect to go into labour soon (i.e. you are close to your due date). If you become pregnant while taking Macrobid, contact your doctor immediately.
Breast-feeding: Macrobid passes into breast milk. If you are a breast-feeding mother and are taking nitrofurantoin, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.
Children: The safety and effectiveness of using this medication have not been established for children less than one month of age.
We manage your refills and get in touch with your doctors for prescription renewals so that you always have the medication you need.
All material © 1996-2021 MediResource Inc. Terms and conditions of use. The contents herein are for informational purposes only. Always seek the advice of your physician or other qualified health providers with any questions you may have regarding a medical condition.
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