nitrofurantoin (generic name)

Nitrofurantoin Monohydrate/Macrocrystals (brand name)

It is used to treat urinary tract infections
(nye troe fyoor AN toyn)
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What is this medicine?

NITROFURANTOIN (nye troe fyoor AN toyn) is an antibiotic. It is used to treat urinary tract infections.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • anemia
  • diabetes
  • glucose-6-phosphate dehydrogenase deficiency
  • kidney disease
  • liver disease
  • lung disease
  • other chronic illness
  • an unusual or allergic reaction to nitrofurantoin, other antibiotics, other medicines, foods, dyes or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

Take this suspension by mouth with a glass of water. Follow the directions on your prescription label. Shake well before using. Use a specially marked spoon or container to measure your medicine. Ask your pharmacist if you do not have one. Household spoons are not accurate. If this medicine upsets your stomach, take with food or milk. You can mix the suspension with water, milk, fruit juice, or infant formula. Take your medicine at regular intervals. Do not take your medicine more often than directed. Take all of your medicine as directed even if you think your are better. Do not skip doses or stop your medicine early.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

  • antacids containing magnesium trisilicate
  • probenecid
  • quinolone antibiotics like ciprofloxacin, lomefloxacin, norfloxacin and ofloxacin
  • sulfinpyrazone

What should I watch for while using this medicine?

Tell your doctor or health care professional if your symptoms do not improve or if you get new symptoms. Drink several glasses of water a day. If you are taking this medicine for a long time, visit your doctor for regular checks on your progress.

If you are diabetic, you may get a false positive result for sugar in your urine with certain brands of urine tests. Check with your doctor.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:
  • allergic reactions like skin rash or hives, swelling of the face, lips, or tongue
  • chest pain
  • cough
  • difficulty breathing
  • dizziness, drowsiness
  • fever or infection
  • joint aches or pains
  • pale or blue-tinted skin
  • redness, blistering, peeling or loosening of the skin, including inside the mouth
  • tingling, burning, pain, or numbness in hands or feet
  • unusual bleeding or bruising
  • unusually weak or tired
  • yellowing of eyes or skin

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • dark urine
  • diarrhea
  • headache
  • loss of appetite
  • nausea or vomiting
  • temporary hair loss

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Do not freeze. Protect from light. Throw away any unused medicine after the expiration date.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Last Updated: July 08, 2009
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