Generic Macrodantin

Brand-name and generic forms of Macrodantin (nitrofurantoin macrocrystalline) are both currently available to both treat and prevent urinary tract infections. The generic capsules come in two strengths (50 mg and 100 mg) and are made by Mylan Pharmaceuticals and other companies. There are no generic versions of the 25-mg capsules at this time.

Can I Buy Generic Macrodantin?

Macrodantin® (nitrofurantoin macrocrystalline) is a prescription medication approved for treating and preventing bladder infections. When used to treat bladder infections, it is usually taken four times a day; when used to prevent them, it is usually taken once or twice a day.
Currently, brand-name Macrodantin is made by Procter & Gamble Pharmaceuticals, Inc. However, the patents for Macrodantin have expired, and generic versions are now available.

Available Strengths

Generic Macrodantin capsules come in the following strengths:
  • Nitrofurantoin 50 mg
  • Nitrofurantoin 100 mg.
At this time, no generic versions of the 25-mg capsules are available.

Who Makes Generic Macrodantin?

Generic Macrodantin is made by various companies, including:
  • Mylan Pharmaceuticals
  • Teva Specialty Pharmaceuticals
  • Watson Pharmaceuticals.

Other Forms of Generic Nitrofurantoin

Care must be taken to avoid confusing generic Macrodantin with generic Macrobid® (nitrofurantoin monohydrate/macrocrystalline), a similar medication that is taken just twice a day. The generic names are quite similar and are often abbreviated in order to fit on prescription labels.
While most pharmacists are aware of this potential problem and are careful to avoid confusing the two, it is a good idea to check with your pharmacist if your generic Macrodantin looks different from what you have received before.
Last reviewed by: Kristi Monson, PharmD
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