🦠microbiology review

Nitrofurantoin

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Nitrofurantoin is an antibiotic specifically used to treat urinary tract infections. It works by inhibiting bacterial enzymes and interfering with cell wall synthesis.

5 Must Know Facts For Your Next Test

  1. Nitrofurantoin is particularly effective against E. coli, a common causative agent of UTIs.
  2. It is often prescribed in both acute and chronic urinary tract infections.
  3. Nitrofurantoin is available in both macrocrystalline and monohydrate/macrocrystalline forms.
  4. The drug is concentrated in the urine, which makes it less effective for systemic infections but ideal for UTIs.
  5. Common side effects include gastrointestinal disturbances and hypersensitivity reactions.

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