Furadantin Warnings and Precautions
If your healthcare provider recommends long-term treatment with the antibiotic Furadantin, you may require careful monitoring of your lungs, liver, and kidneys. Other warnings and precautions with Furadantin apply to people with diabetes, women who are pregnant or breastfeeding, and people with glucose-6-phosphate dehydrogenase deficiency.
What Should I Tell My Healthcare Provider?Prior to taking Furadantin® (nitrofurantoin suspension), talk to your healthcare provider if you have:
- Kidney disease, such as kidney failure (renal failure)
- Vitamin B deficiency
- Glucose-6-phosphate dehydrogenase deficiency
- An electrolyte imbalance
- Any allergies, including to food, dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant
Be sure to tell your healthcare provider about all other medicines you may be taking, including prescription and nonprescription medications, vitamins, and herbal supplements.
Specific Furadantin Precautions and WarningsPrecautions and warnings to be aware of prior to taking Furadantin include the following:
- In rare cases, people taking Furadantin have experienced liver damage, including fatal liver problems. If you take this medication long-term (or frequently), your healthcare provider may want to monitor your liver function.
- Furadantin can cause nerve problems, which can sometimes be quite serious. Let your healthcare provider know if you experience any unusual sensations (such as burning, numbness, or tingling), especially in the hands or feet. People with poor kidney function, anemia, diabetes, an electrolyte imbalance, or a vitamin B deficiency may be more likely to experience such nerve problems.
- Serious lung problems have occurred in people taking nitrofurantoin (the active ingredient in Furadantin). Such problems are rare, but are more common in people taking nitrofurantoin for six months or longer. People who take this medication long-term should have their lungs monitored carefully. Be sure to report any lung symptoms, such as shortness of breath or an unexplained cough, to your healthcare provider right away.
- People who take this medication long-term should have their kidney function monitored regularly (using a simple blood test).
- There have been cases of hemolytic anemia (destruction of red blood cells) linked to nitrofurantoin, particularly in people with glucose-6-phosphate dehydrogenase deficiency.
- Furadantin is considered a pregnancy Category B medicine. This means that it is probably safe for use during pregnancy, although the full risks are currently unknown. However, Furadantin is not recommended for women who are near the end of pregnancy (see Furadantin and Pregnancy for more information).
- Many antibiotics have been known to cause pseudomembranous colitis (severe diarrhea). This is a serious condition that may be fatal. If you experience severe, bloody, or prolonged diarrhea, contact your healthcare provider right away.
- Furadantin can interact with certain medications (see Furadantin Drug Interactions).
- Furadantin passes through breast milk in trace amounts. Therefore, if you are breastfeeding, check with your healthcare provider before taking this drug (see Furadantin and Breastfeeding).