Macrodantin

The dosage of Macrobid for children over 12 years of age is one 100 milligram capsule every 12 hours for 7 days. Safety and effectiveness have not been established for children under 12.

OLDER ADULTS

Doctors tend to prescribe lower doses of Macrodantin for older adults. The drug is more likely to cause lung and liver problems in members of this group; and because more older adults have poor kidneys, the risk of toxic reactions to Macrodantin is also greater.

Overdosage

An overdose of nitrofurantoin does not cause any specific symptoms other than vomiting. If vomiting does not occur soon after an excessive dose, it should be induced.

If you suspect an overdose, seek emergency medical treatment immediately.