• ​Upset stomach (diarrhea, nausea, vomiting) Be sure to take nitrofurantoin with food or a glass of milk. If you or your child do and still have stomach upsets, contact your doctor.
• ​Skin rash, difficulty in breathing, chills, fever. Stop taking the medication, and consult doctor immediately.
• Dark yellow urine. This side effect is harmless and is reversible upon discontinuation of treatment.
• Numbness and pin-prick sensation in finger and toes. Contact your doctor.

• Inform your doctor if you or your child have glucose-6- phosphate dehydrogenase (G6PD) deficiency.
• Inform your doctor if you or your child have kidney disease, or if you are pregnant and within a few weeks of delivery date, or if you are breastfeeding.

Your doctor has determined how often you or your child should take this medication. To be effective, doses of Nitrofurantoin should be taken at intervals as far apart as possible and evenly spaced. For example, if your doctor tells you to administer it four times a day, it is best to take one dose every six hours. However, if you or your child cannot take it at recommended time, you or your child may still take it at evenly spaced intervals between the time you or your child wake up in the morning and the time you or your child go to bed at night (for example, at 7am, noon, 5pm and 10pm).

Nitrofurantoin tablets should be taken with meals or with a full glass of milk or water.

Administer the missed dose as soon as you remember it. Take any remaining doses for that day at evenly spaced intervals.

Drink at least 8 full 8-ounce glasses of water or other liquid every day.

Be sure to complete the whole course as prescribed, even though symptoms of the infection may have disappeared.

Consult your doctor if you or your child still have symptoms of the infection after completing the course.