nitrofurantoin macrocrystals 100 mg Capsule, 100-count
🆔 Identity & classification
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🏷️ RxNorm drug class
This medicine belongs to the Nitrofuran Antibacterial class.
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🏭 Manufacturer & labeler
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🩺 Clinical
Nitrofurantoin is used to treat urinary tract infections. Nitrofurantoin is in a class of medications called antibiotics. It works by killing bacteria that cause infection. Antibiotics such as nitrofurantoin will not work for colds, flu, or other viral infections. Using antibiotics when they are not needed increases your risk of getting an infection later that resists antibiotic treatment.
Read the full MedlinePlus article ↗- Yes, nitrofurantoin is used specifically for urinary tract infections — typically bladder infections caused by certain bacteria. It's not used for kidney infections or for infectio...
- What exactly is nitrofurantoin used for — is it just for bladder infections?
- Taking it with food genuinely makes a difference — it helps your body absorb the medication better and also reduces the chances of an upset stomach or nausea, which are the most co...
- Do I really have to take it with food? What if I forget?
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💊 What it looks like
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🧪 Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
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UNII H3R47K3TBD
FD&C Blue No. 1 is a synthetic blue dye approved for use in foods and medicines. It serves as a colorant to give the medication its distinctive appearance and help with product identification.
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UNII PN2ZH5LOQY
A synthetic red dye approved by the FDA for use in foods, medicines, and cosmetics. It serves as a colorant to make tablets, capsules, and liquids visually distinctive for product identification.
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UNII 2G86QN327L
Gelatin is a protein derived from animal collagen, commonly used in medicines as a gelling agent and capsule material. It helps create soft or hard capsule shells that hold and release medication, and can also thicken liquid formulations.
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UNII EWQ57Q8I5X
Lactose monohydrate is a natural sugar derived from milk. It serves as a filler and binder in tablets and capsules, helping create the proper size, texture, and consistency of the medicine.
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UNII 70097M6I30
Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
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UNII 368GB5141J
A detergent and foaming agent derived from coconut or palm oil. In medications, it helps break down and mix oil and water-based ingredients, aids in tablet disintegration, and improves how the drug dissolves and spreads in the mouth or digestive system.
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UNII O8232NY3SJ
A plant-based carbohydrate derived from corn kernels. It acts as a filler to add bulk, a binder to hold ingredients together, and a disintegrant to help the tablet break apart in your stomach for absorption.
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UNII 7SEV7J4R1U
A powder made from a naturally occurring mineral. In medicines, talc works as a glidant and anti-caking agent, helping tablets and capsules flow smoothly during manufacturing and preventing clumping.
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UNII 15FIX9V2JP
Titanium dioxide is a bright white mineral powder commonly used as a colorant and opacifying agent. It makes pills and tablets white or lighter in color and helps make coatings non-transparent.
9 inactive ingredients listed in the exact product block matched to this NDC.
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ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.Inactive ingredient FAQ
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💲 Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per each | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data. | |
| Medicare drug plans payPart D · Q2 2026 | $0.3581 | $35.81 / 100 capsules |
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🔁 Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Nitrofurantoin Macrocrystals 100 mg 00115-1645-01 | Amneal | 100 capsules | $0.221 | AB | Availability likely | — |
| Nitrofurantoin Macrocrystals 100 mg 50268-0624-15 | AvPAK | 50 capsules | $0.221 | AB | Availability likely | — |
| nitrofurantoin (macrocrystals) 100 mg 59651-0795-01 | Aurobindo | 100 capsules | $0.221 | AB | Availability likely | — |
| Nitrofurantoin Macrocrystals 100 mg 60687-0850-01 | American | 100 capsules | $0.221 | AB | Availability likely | — |
| Nitrofurantoin 100 mg 62332-0391-31 | Alembic | 100 capsules | $0.221 | AB | Availability likely | — |
| nitrofurantoin macrocrystals 100 mg 68001-0605-00 | BluePoint | 100 capsules | $0.221 | AB | Availability likely | — |
| nitrofurantoin macrocrystals 100 mg 70756-0412-11 | Lifestar | 100 capsules | $0.221 | AB | Availability likely | — |
| nitrofurantoin macrocrystals 100 mg 72603-0184-01 | NorthStar | 100 capsules | $0.221 | AB | Availability likely | — |
| Nitrofurantoin macrocrystals 100 mg 43386-0642-01 | Lupin | 100 capsules | $0.242 | AB | Availability likely | — |
| nitrofurantoin macrocrystals 100 mg 47781-0308-01 | Alvogen | 100 capsules | $0.395 | AB | Discontinued | — |
| Nitrofurantion 100 mg 68001-0386-00 | BluePoint | 100 capsules | $0.395 | — | FDA listed | — |
| nitrofurantoin macrocrystals 100 mg 68382-0560-01 | Zydus | 100 capsules | $0.437 | AB | FDA listed | — |
| Nitrofurantoin 100 mg 46708-0391-31 | Alembic | 100 capsules | — | AB | FDA listed | — |
| Nitrofurantion 100 mg 50090-5693-00 | A-S | 28 capsules | — | — | FDA listed | — |
| nitrofurantoin 100 mg 50090-7217-00 | A-S | 28 capsules | — | AB | FDA listed | — |
| nitrofurantoin (macrocrystals) 100 mg 50090-7308-00 | A-S | 28 capsules | — | AB | FDA listed | — |
| nitrofurantoin macrocrystals 100 mg 51655-0948-20 | Northwind | 20 capsules | — | AB | FDA listed | — |
| Macrodantin 100 mg 52427-0288-01 | Almatica | 100 capsules | — | AB | Discontinued | — |
| Nitrofurantion 100 mg 57664-0233-18 | Sun | 1000 capsules | — | — | FDA listed | — |
| Nitrofurantoin Macrocrystals 100 mg 61919-0842-14 | Direct_Rx | 14 capsules | — | AB | FDA listed | — |
| Nitrofurantion Macrocrystals 100 mg 63187-0245-10 | Proficient | 10 capsules | — | AB | FDA listed | — |
| Nitrofurantoin Macrocrystals 100 mg 67296-2150-01 | Redpharm | 10 capsules | — | AB | FDA listed | — |
| nitrofurantoin macrocrystals 100 mg 67296-2251-04 | Redpharm | 14 capsules | — | AB | FDA listed | — |
| Nitrofurantion 100 mg 68071-2363-07 | NuCare | 14 capsules | — | — | FDA listed | — |
| nitrofurantoin macrocrystals 100 mg 70518-3827-00 | REMEDYREPACK | 14 capsules | — | AB | FDA listed | — |
| Nitrofurantoin 100 mg 70518-4244-00 | REMEDYREPACK | 30 capsules | — | AB | FDA listed | — |
| nitrofurantoin macrocrystals 100 mgthis 70771-1171-02 | Zydus | 100 capsules | — | AB | FDA listed | — |
| Nitrofurantion 100 mg 71205-0171-10 | Proficient | 10 capsules | — | — | FDA listed | — |
| Nitrofurantoin Macrocrystals 100 mg 71205-0297-10 | Proficient | 10 capsules | — | AB | FDA listed | — |
| Nitrofurantion 100 mg 71335-0024-01 | Bryant | 40 capsules | — | — | FDA listed | — |
| nitrofurantoin 100 mg 71335-1069-01 | Bryant | 40 capsules | — | AB | FDA listed | — |
| Nitrofurantoin 100 mg 71335-1135-01 | Bryant | 40 capsules | — | AB | FDA listed | — |
| nitrofurantoin macrocrystals 100 mg 71335-2212-01 | Bryant | 40 capsules | — | AB | FDA listed | — |
| Nitrofurantoin Macrocrystals 100 mg 72789-0270-02 | PD-Rx | 2 capsules | — | AB | FDA listed | — |
| nitrofurantoin macrocrystals 100 mg 72789-0340-10 | PD-Rx | 10 capsules | — | AB | FDA listed | — |
| nitrofurantoin macrocrystals 100 mg 82804-0131-14 | Proficient | 14 capsules | — | AB | FDA listed | — |
| Nitrofurantoin 100 mg 82804-0241-14 | Proficient | 14 capsules | — | AB | FDA listed | — |
| nitrofurantoin macrocrystals 100 mg 82868-0015-14 | Northwind | 14 capsules | — | AB | FDA listed | — |
| nitrofurantoin macrocrystals 100 mg 83939-0016-01 | VERITYRX, | 1 capsule | — | AB | FDA listed | — |
Where does this data come from?
⏳ Availability & generic status
This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.
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📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 70771-1171-00 | 1000 CAPSULE in 1 BOTTLE (70771-1171-0) | 2018-02-15 | Active |
| 70771-1171-01 | 100 CAPSULE in 1 BOTTLE (70771-1171-1) | 2018-02-15 | Active |
| 70771-1171-02 You're viewing this | 10 BLISTER PACK in 1 CARTON (70771-1171-2) / 10 CAPSULE in 1 BLISTER PACK | 2018-02-15 | Active |
Pack size FAQ
What quantity is in NDC 70771-1171-02?
What is the difference between NDC 70771-1171-02 and NDC 70771-1171-01?
What NDC number is used to bill for this package of nitrofurantoin macrocrystals 100 mg Capsule?
🧭 About this NDC listing & data coverage
What data is (and isn’t) available for this NDC — tap to expand
| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | ✓ Available |
| Inactive ingredients (structured) | ✓ Available |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | ✓ Available |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold. |
Questions about this listing
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📄 Full prescribing information FDA SPL
🎯 Indications and Usage ▾
INDICATIONS AND USAGE: Nitrofurantoin macrocrystals capsules are specifically indicated for the treatment of urinary tract infections when due to susceptible strains of Escherichia coli , enterococci, Staphylococcus aureus , and certain susceptible strains of Klebsiella and Enterobacter species. Nitrofurantoin is not indicated for the treatment of pyelonephritis or perinephric abscesses. To reduce the development of drug-resistant bacteria and maintain the effectiveness of nitrofurantoin macrocrystals capsules and other antibacterial drugs, nitrofurantoin macrocrystals capsules should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria.
When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy. Nitrofurantoins lack the broader tissue distribution of other therapeutic agents approved for urinary tract infections.
Consequently, many patients who are treated with nitrofurantoin macrocrystals capsules are predisposed to persistence or reappearance of bacteriuria. Urine specimens for culture and susceptibility testing should be obtained before and after completion of therapy. If persistence or reappearance of bacteriuria occurs after treatment with nitrofurantoin macrocrystals capsules, other therapeutic agents with broader tissue distribution should be selected.
In considering the use of nitrofurantoin macrocrystals capsules, lower eradication rates should be balanced against the increased potential for systemic toxicity and for the development of antimicrobial resistance when agents with broader tissue distribution are utilized.
⏱️ Dosage and Administration ▾
DOSAGE AND ADMINISTRATION: Nitrofurantoin macrocrystals capsules should be given with food to improve drug absorption and, in some patients, tolerance. Adults: 50 to 100 mg four times a day -- the lower dosage level is recommended for uncomplicated urinary tract infections. Pediatric Patients: 5 to 7 mg/kg of body weight per 24 hours, given in four divided doses (contraindicated under one month of age).
Therapy should be continued for one week or for at least 3 days after sterility of the urine is obtained. Continued infection indicates the need for reevaluation. For long-term suppressive therapy in adults, a reduction of dosage to 50 to 100 mg at bedtime may be adequate.
For long-term suppressive therapy in pediatric patients, doses as low as 1 mg/kg per 24 hours, given in a single dose or in two divided doses, may be adequate. SEE WARNINGS SECTION REGARDING RISKS ASSOCIATED WITH LONG-TERM THERAPY.
⛔ Contraindications ▾
CONTRAINDICATIONS: Anuria, oliguria, or significant impairment of renal function (creatinine clearance under 60 mL per minute or clinically significant elevated serum creatinine) are contraindications. Treatment of this type of patient carries an increased risk of toxicity because of impaired excretion of the drug. Because of the possibility of hemolytic anemia due to immature erythrocyte enzyme systems (glutathione instability), the drug is contraindicated in pregnant patients at term (38 to 42 weeks' gestation), during labor and delivery, or when the onset of labor is imminent.
For the same reason, the drug is contraindicated in neonates under one month of age. Nitrofurantoin macrocrystals capsules are contraindicated in patients with a previous history of cholestatic jaundice/hepatic dysfunction associated with nitrofurantoin. Nitrofurantoin macrocrystals capsules are also contraindicated in those patients with known hypersensitivity to nitrofurantoin.
⚠️ Warnings ▾
WARNINGS: Pulmonary reactions: ACUTE , SUBACUTE , OR CHRONIC PULMONARY REACTIONS HAVE BEEN OBSERVED IN PATIENTS TREATED WITH NITROFURANTOIN. IF THESE REACTIONS OCCUR , NITROFURANTOIN MACROCRYSTALS SHOULD BE DISCONTINUED AND APPROPRIATE MEASURES TAKEN. REPORTS HAVE CITED PULMONARY REACTIONS AS A CONTRIBUTING CAUSE OF DEATH.
CHRONIC PULMONARY REACTIONS (DIFFUSE INTERSTITIAL PNEUMONITIS OR PULMONARY FIBROSIS , OR BOTH) CAN DEVELOP INSIDIOUSLY. THESE REACTIONS OCCUR RARELY AND GENERALLY IN PATIENTS RECEIVING THERAPY FOR SIX MONTHS OR LONGER. CLOSE MONITORING OF THE PULMONARY CONDITION OF PATIENTS RECEIVING LONG-TERM THERAPY IS WARRANTED AND REQUIRES THAT THE BENEFITS OF THERAPY BE WEIGHED AGAINST POTENTIAL RISKS (SEE RESPIRATORY REACTIONS).
Hepatotoxicity: Hepatic reactions, including hepatitis, cholestatic jaundice, chronic active hepatitis, and hepatic necrosis, occur rarely. Fatalities have been reported. The onset of chronic active hepatitis may be insidious, and patients should be monitored periodically for changes in biochemical tests that would indicate liver injury.
If hepatitis occurs, the drug should be withdrawn immediately and appropriate measures should be taken. Neuropathy: Peripheral neuropathy, which may become severe or irreversible, has occurred. Fatalities have been reported.
Conditions such as renal impairment (creatinine clearance under 60 mL per minute or clinically significant elevated serum creatinine), anemia, diabetes mellitus, electrolyte imbalance, vitamin B deficiency, and debilitating disease may enhance the occurrence of peripheral neuropathy. Patients receiving long-term therapy should be monitored periodically for changes in renal function. Optic neuritis has been reported rarely in postmarketing experience with nitrofurantoin formulations.
Hemolytic anemia: Cases of hemolytic anemia of the primaquine-sensitivity type have been induced by nitrofurantoin. Hemolysis appears to be linked to a glucose-6-phosphate dehydrogenase deficiency in the red blood cells of the affected patients. This deficiency is found in 10 percent of Blacks and a small percentage of ethnic groups of Mediterranean and Near-Eastern origin.
Hemolysis is an indication for discontinuing nitrofurantoin macrocrystals; hemolysis ceases when the drug is withdrawn. Clostridium difficile-associated diarrhea: Clostridium difficile associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents, including nitrofurantoin, and may range in severity from mild diarrhea to fatal colitis. Treatment with antibacterial agents alters the normal flora of the colon leading to overgrowth of C. difficile .
C. difficile produces toxins A and B which contribute to the development of CDAD. Hypertoxin producing strains of C. difficile cause increased morbidity and mortality, as these infections can be refractory to antimicrobial therapy and may require colectomy. CDAD must be considered in all patients who present with diarrhea following antibiotic use.
Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents. If CDAD is suspected or confirmed, ongoing antibiotic use not directed against C. difficile may need to be discontinued. Appropriate fluid and electrolyte management, protein supplementation, antibiotic treatment of C. difficile , and surgical evaluation should be instituted as clinically indicated.
🤒 Adverse Reactions ▾
ADVERSE REACTIONS: Respiratory: CHRONIC, SUBACUTE, OR ACUTE PULMONARY HYPERSENSITIVITY REACTIONS MAY OCCUR. CHRONIC PULMONARY REACTIONS OCCUR GENERALLY IN PATIENTS WHO HAVE RECEIVED CONTINUOUS TREATMENT FOR SIX MONTHS OR LONGER. MALAISE, DYSPNEA ON EXERTION, COUGH, AND ALTERED PULMONARY FUNCTION ARE COMMON MANIFESTATIONS WHICH CAN OCCUR INSIDIOUSLY.
RADIOLOGIC AND HISTOLOGIC FINDINGS OF DIFFUSE INTERSTITIAL PNEUMONITIS OR FIBROSIS, OR BOTH, ARE ALSO COMMON MANIFESTATIONS OF THE CHRONIC PULMONARY REACTION. FEVER IS RARELY PROMINENT. THE SEVERITY OF CHRONIC PULMONARY REACTIONS AND THEIR DEGREE OF RESOLUTION APPEAR TO BE RELATED TO THE DURATION OF THERAPY AFTER THE FIRST CLINICAL SIGNS APPEAR.
PULMONARY FUNCTION MAY BE IMPAIRED PERMANENTLY, EVEN AFTER CESSATION OF THERAPY. THE RISK IS GREATER WHEN CHRONIC PULMONARY REACTIONS ARE NOT RECOGNIZED EARLY. In subacute pulmonary reactions, fever and eosinophilia occur less often than in the acute form.
Upon cessation of therapy, recovery may require several months. If the symptoms are not recognized as being drug-related and nitrofurantoin therapy is not stopped, the symptoms may become more severe. Acute pulmonary reactions are commonly manifested by fever, chills, cough, chest pain, dyspnea, pulmonary infiltration with consolidation or pleural effusion on x-ray, and eosinophilia.
Acute reactions usually occur within the first week of treatment and are reversible with cessation of therapy. Resolution often is dramatic (see WARNINGS ). Changes in EKG (e.g., non-specific ST/T wave changes, bundle branch block) have been reported in association with pulmonary reactions.
Cyanosis has been reported rarely. Hepatic: Hepatic reactions, including hepatitis, cholestatic jaundice, chronic active hepatitis, and hepatic necrosis, occur rarely (see WARNINGS ). Neurologic: Peripheral neuropathy, which may become severe or irreversible, has occurred.
Fatalities have been reported. Conditions such as renal impairment (creatinine clearance under 60 mL per minute or clinically significant elevated serum creatinine), anemia, diabetes mellitus, electrolyte imbalance, vitamin B deficiency, and debilitating diseases may increase the possibility of peripheral neuropathy (see WARNINGS ). Asthenia, vertigo, nystagmus, dizziness, headache, and drowsiness also have been reported with the use of nitrofurantoin.
Benign intracranial hypertension (pseudotumor cerebri), confusion, depression, optic neuritis, and psychotic reactions have been reported rarely. Bulging fontanels, as a sign of benign intracranial hypertension in infants, have been reported rarely. Dermatologic: Exfoliative dermatitis and erythema multiforme (including Stevens-Johnson syndrome) have been reported rarely.
Transient alopecia also has been reported. Allergic: A lupus-like syndrome associated with pulmonary reactions to nitrofurantoin has been reported. Also, angioedema; maculopapular, erythematous, or eczematous eruptions; pruritus; urticaria; anaphylaxis; arthralgia; myalgia; drug fever; chills; and vasculitis (sometimes associated with pulmonary reactions) have been reported.
Hypersensitivity reactions represent the most frequent spontaneously-reported adverse events in worldwide postmarketing experience with nitrofurantoin formulations. Gastrointestinal: Nausea, emesis, and anorexia occur most often. Abdominal pain and diarrhea are less common gastrointestinal reactions.
These dose-related reactions can be minimized by reduction of dosage. Sialadenitis and pancreatitis have been reported. There have been sporadic reports of pseudomembranous colitis with the use of nitrofurantoin.
The onset of pseudomembranous colitis symptoms may occur during or after antimicrobial treatment (see WARNINGS ). Hematologic: Cyanosis secondary to methemoglobinemia has been reported rarely. Miscellaneous: As with other antimicrobial agents, superinfections caused by resistant organisms, e.g., Pseudomonas species or Candida species, can occur.
Laboratory Advers…
🆘 Overdosage ▾
OVERDOSAGE: Occasional incidents of acute overdosage of nitrofurantoin macrocrystals have not resulted in any specific symptoms other than vomiting. Induction of emesis is recommended. There is no specific antidote, but a high fluid intake should be maintained to promote urinary excretion of the drug. It is dialyzable.
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY: Nitrofurantoin macrocrystals is a larger crystal form of nitrofurantoin. The absorption of nitrofurantoin macrocrystals is slower and its excretion somewhat less when compared to nitrofurantoin. Blood concentrations at therapeutic dosage are usually low.
It is highly soluble in urine, to which it may impart a brown color. Following a dose regimen of 100 mg q.i.d. for 7 days, average urinary drug recoveries (0 to 24 hours) on day 1 and day 7 were 37.9% and 35%. Unlike many drugs, the presence of food or agents delaying gastric emptying can increase the bioavailability of nitrofurantoin macrocrystals, presumably by allowing better dissolution in gastric juices.
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED: Nitrofurantoin Capsules, USP (Macrocrystals) 50 mg are light yellow to yellow powder filled in size "3" empty hard gelatin capsules with blue opaque colored cap and white opaque colored body imprinted with '559' in black ink and are supplied as follows: NDC 70771-1170-1 in bottles of 100 capsules NDC 70771-1170-0 in bottles of 1000 capsules NDC 70771-1170-2 in unit-dose blister cartons of 100 (10 x 10) unit-dose capsules Nitrofurantoin Capsules, USP (Macrocrystals) 100 mg are light yellow to yellow powder filled in size "2" empty hard gelatin capsules with blue opaque colored cap and blue opaque colored body imprinted with '560' in black ink and are supplied as follows: NDC 70771-1171-1 in bottles of 100 capsules NDC 70771-1171-0 in bottles of 1000 capsules NDC 70771-1171-2 in unit-dose blister cartons of 100 (10 x 10) unit-dose capsules Storage Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature] .
Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure. Manufactured by: Zydus Lifesciences Ltd., Ahmedabad, India Rev.: 11/23
📋 Description ▾
DESCRIPTION: Nitrofurantoin capsules, USP (macrocrystals) is a synthetic chemical of controlled crystal size. It is a stable, lemon-yellow, crystalline compound. Nitrofurantoin capsules, USP (macrocrystals) is an antibacterial agent for specific urinary tract infections.
It is available in 50 mg and 100 mg capsules for oral administration. 1-[[(5-nitro-2-furanyl)methylene] amino]-2,4-imidazolidinedione Nitrofurantoin macrocrystals is a lemon-yellow crystalline compound. It is soluble in dimethylformamide, very slightly soluble in water and in alcohol.
Each nitrofurantoin capsules, USP (macrocrystals) intended for oral administration contains 50 mg and 100 mg of nitrofurantoin macrocrystals. In addition, each capsule contains the following inactive ingredients: gelatin, lactose monohydrate, magnesium stearate, pregelatinized starch, talc and titanium dioxide. Additionally each 50 mg and 100 mg capsule shell contains FD & C Blue # 1, FD & C Red # 3 and sodium lauryl sulphate.
The capsule is printed with black pharmaceutical ink which contains black iron oxide, potassium hydroxide, propylene glycol and shellac. figure