Nitrofurantoin 100mg (Mono/Macro)
Generic For: Macrobid
Nitrofurantoin mono/macro 100mg (brand name Macrobid) is a nitrofuran antibiotic used to treat acute uncomplicated urinary tract infections (bladder infections) caused by susceptible bacteria. If a licensed provider determines it is appropriate for you after review, your prescription ships from a licensed U.S. pharmacy.
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Buy Nitrofurantoin Mono/Macro 100mg (Macrobid) Online
Nitrofuran antibiotic for urinary tract infections (UTIs) and acute bladder infections (cystitis)
Nitrofurantoin 100mg (Mono/Macro) Quick Facts
| Drug class | Nitrofuran antibiotic |
|---|---|
| Treats | Urinary tract infections (UTIs), acute bladder infections (cystitis) |
| Form | Capsule |
| Typical dosing | Take 1 capsule by mouth twice a day for 10 days. |
| Prescription required | Yes — prescription only |
What Is Nitrofurantoin 100mg (Mono/Macro)?
Nitrofurantoin mono/macro is an oral antibiotic that combines nitrofurantoin monohydrate and macrocrystals in a single capsule, sold under the brand name Macrobid. It works by concentrating in the urine, where it damages bacterial proteins and DNA to stop the growth of bacteria that cause urinary tract infections. It is FDA-approved specifically for acute uncomplicated urinary tract infections (acute cystitis) and is not intended for kidney infections or infections outside the urinary tract. A prescription from a licensed provider is required.
What Does Nitrofurantoin 100mg (Mono/Macro) Treat?
Acute uncomplicated urinary tract infections (UTIs)
Acute bladder infections (cystitis)
UTIs caused by susceptible Escherichia coli strains
UTIs caused by susceptible Staphylococcus saprophyticus strains
Nitrofurantoin 100mg (Mono/Macro) Dosage
Adults: 100 mg by mouth every 12 hours for 7 days.
Take with food to improve absorption and tolerability.
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Nitrofurantoin 100mg (Mono/Macro) Side Effects
Common side effects
- Nausea
- Headache
- Gas (flatulence)
- Diarrhea
- Dizziness
- Abdominal pain
- Harmless brown or dark yellow discoloration of urine
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Acute or chronic pulmonary reactions (cough, shortness of breath, fever)
- Liver injury (jaundice, dark urine, hepatitis symptoms)
- Peripheral neuropathy (numbness or tingling in hands or feet)
- Hemolytic anemia (unusual fatigue, pale skin), especially with G6PD deficiency
- Severe or persistent diarrhea (possible C. difficile infection)
- Severe allergic or skin reactions
Warnings & Interactions
Do not use with significantly reduced kidney function (contraindicated per labeling)
Contraindicated in pregnancy at term (38–42 weeks), during labor, or when delivery is imminent
Contraindicated in infants under 1 month of age
Do not use if you had prior liver or lung reactions to nitrofurantoin
Use with caution in G6PD deficiency due to hemolytic anemia risk
Magnesium trisilicate antacids can reduce absorption; avoid taking together
Not effective for kidney infections (pyelonephritis) or perinephric abscesses
Tell your prescriber about all medications, supplements, and health conditions before starting nitrofurantoin 100mg (mono/macro).
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