Skip to the answer

Cefdinir

Cefdinir is a cephalosporin antibiotic used to treat mild to moderate bacterial infections of the lungs, sinuses, throat, ears (in children) and skin.

Brand name Omnicef
Drug class Cephalosporin Antibacterial
Rx Forms 2
Dr. Brian Staiger, PharmD, BCPS
Reviewed by Last reviewed Jul 10, 2026 Content updated Oct 2, 2026
🧬 Where this information comes from Click to expand

The clinical label records used on this page are FDA-filed Structured Product Labeling (SPL) retrieved through openFDA. We identified 81 clinical label sets within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. Forms, routes, brands, labelers, strengths, and NDC product-record counts are built separately from matching FDA National Drug Code Directory records. The linked DailyMed document is a representative official source for verification, not the page’s only clinical source. View the linked label on DailyMed →

✓No current FDA shortage listed · checked Oct 5, 2026
Cefdinir at a glance The quick version — the full detail is in the Patient Information Guide below.
Dr. Brian Staiger, PharmD, BCPS
The Pharmacist’s Take By · Clinical pharmacist · Written

Cefdinir (Omnicef) is a cephalosporin antibiotic that attacks bacterial cell walls. It is used for mild to moderate pneumonia, sinus infections, strep throat, skin infections and children's ear infections, and it is a common pick when amoxicillin is not a good fit, around since the late 1990s and available as a generic. Most people handle it well. Loose stools and nausea are the usual complaints, and young children often get diaper rash. Mention any penicillin or cephalosporin allergy before starting, and get emergency help for trouble breathing or facial swelling. Call your doctor about severe or bloody diarrhea, even weeks later, since it can signal C. difficile, a serious colon infection.

Clinical pearls

  • Take cefdinir at least 2 hours before or after aluminum or magnesium antacids and iron supplements, since they block absorption.
  • Reddish stools are harmless, caused by cefdinir binding iron in the gut, and iron-fortified infant formula is fine to keep using.
  • A penicillin allergy does not rule cefdinir out, but a past cephalosporin allergy does, so describe exactly what reaction you had.
  • With kidney disease or dialysis the dose may need lowering, since full cephalosporin doses have been linked to seizures.
How you get itPrescription only
Comes asCapsule, Oral suspension
Earliest FDA record1997
Companies listing it with the FDA21
FDA label last updatedNov 1, 2019
FDA’s strongest warning (boxed)None on the label

Patient information guide A plain-language walkthrough of Cefdinir, written from its FDA label.

What Cefdinir is used for

▾

Cefdinir treats mild to moderate bacterial infections in these areas:

  • Community-acquired pneumonia (adults and adolescents)
  • Acute flare-ups of chronic bronchitis (adults and adolescents)
  • Acute maxillary sinusitis, a sinus infection (adults and adolescents)
  • Pharyngitis/tonsillitis caused by Streptococcus pyogenes, meaning strep throat and tonsil infection (adults, adolescents and children)
  • Uncomplicated skin and skin structure infections (adults, adolescents and children)
  • Acute bacterial otitis media, a middle ear infection (children)

Cefdinir has not been studied for preventing rheumatic fever after strep throat. Only intramuscular penicillin has been shown to do that.

Cefdinir dosage

▾

Cefdinir is taken by mouth, once or twice daily, usually for 5 to 10 days depending on the infection. Food does not matter.

  • Cefdinir capsules are for adults and adolescents 13 and older. Pneumonia and skin infections need twice-daily dosing.
  • Cefdinir for oral suspension is for children 6 months through 12 years. Dosing is by body weight, and skin infections need twice-daily dosing.
  • People with severe kidney disease or on hemodialysis get adjusted schedules.

Follow your prescriber and the label, and finish the full course.

Dosing details from the FDA-approved label

From the Cefdinir prescribing information (“Dosage and Administration”). Doses are set by your prescriber for your product, condition, kidney function and age — never change a dose on your own.

  • Community-Acquired Pneumonia (adults and adolescents age 13 years and older, capsules)
    • 300 mg q12h for 10 days
    • Maximum: Total daily dose for all infections is 600 mg
    • Once-daily dosing has not been studied in pneumonia; give twice daily
  • Acute Exacerbations of Chronic Bronchitis (adults and adolescents age 13 years and older, capsules)
    • 300 mg q12h for 5 to 10 days or 600 mg q24h for 10 days
    • Maximum: Total daily dose for all infections is 600 mg
    • May be taken without regard to meals
  • Acute Maxillary Sinusitis (adults and adolescents age 13 years and older, capsules)
    • 300 mg q12h for 10 days or 600 mg q24h for 10 days
    • Maximum: Total daily dose for all infections is 600 mg
    • May be taken without regard to meals
  • Pharyngitis/Tonsillitis (adults and adolescents age 13 years and older, capsules)
    • 300 mg q12h for 5 to 10 days or 600 mg q24h for 10 days
    • Maximum: Total daily dose for all infections is 600 mg
    • May be taken without regard to meals
  • Uncomplicated Skin and Skin Structure Infections (adults and adolescents age 13 years and older, capsules)
    • 300 mg q12h for 10 days
    • Maximum: Total daily dose for all infections is 600 mg
    • Once-daily dosing has not been studied in skin infections; give twice daily
  • Acute Bacterial Otitis Media (pediatric patients age 6 months through 12 years)
    • 7 mg/kg q12h for 5 to 10 days or 14 mg/kg q24h for 10 days
    • Maximum: 14 mg/kg total daily dose, up to a maximum of 600 mg per day
    • Patients weighing ≥ 43 kg should receive the maximum daily dose of 600 mg
  • Acute Maxillary Sinusitis (pediatric patients age 6 months through 12 years)
    • 7 mg/kg q12h for 10 days or 14 mg/kg q24h for 10 days
    • Maximum: 14 mg/kg total daily dose, up to a maximum of 600 mg per day
    • Patients weighing ≥ 43 kg should receive the maximum daily dose of 600 mg
  • Pharyngitis/Tonsillitis (pediatric patients age 6 months through 12 years)
    • 7 mg/kg q12h for 5 to 10 days or 14 mg/kg q24h for 10 days
    • Maximum: 14 mg/kg total daily dose, up to a maximum of 600 mg per day
    • Patients weighing ≥ 43 kg should receive the maximum daily dose of 600 mg
  • Uncomplicated Skin and Skin Structure Infections (pediatric patients age 6 months through 12 years)
    • 7 mg/kg q12h for 10 days
    • Maximum: 14 mg/kg total daily dose, up to a maximum of 600 mg per day
    • Once-daily dosing has not been studied in skin infections; give twice daily
  • Renal insufficiency (creatinine clearance < 30 mL/min)
    • Adults: 300 mg given once daily
    • Pediatric patients (CLcr < 30 mL/min/1.73 m2): 7 mg/kg (up to 300 mg) given once daily
    • Maximum: 300 mg
    • Hemodialysis: 300 mg or 7 mg/kg every other day, with 300 mg (or 7 mg/kg) given at the end of each session
Read the label’s full dosing text

DOSAGE AND ADMINISTRATION (See INDICATIONS AND USAGE for Indicated Pathogens.) Powder for Oral Suspension The recommended dosage and duration of treatment for infections in pediatric patients are described in the following chart; the total daily dose for all infections is 14 mg/kg, up to a maximum dose of 600 mg per day. Once-daily dosing for 10 days is as effective as BID dosing. Once-daily dosing has not been studied in skin infections; therefore, cefdinir for oral suspension USP should be administered twice daily in this infection. Cefdinir for oral suspension USP may be administered without regard to meals. Pediatric Patients (Age 6 Months Through 12 Years) Type of Infection Dosage Duration Acute Bacterial Otitis Media 7 mg/kg q12h 5 to 10 days or 14 mg/kg q24h 10 days Acute Maxillary Sinusitis 7 mg/kg q12h 10 days or 14 mg/kg q24h 10 days Pharyngitis/Tonsillitis 7 mg/kg q12h 5 to 10 days or 14 mg/kg q24h 10 days Uncomplicated Skin and Skin Structure Infections 7 mg/kg q12h 10 days CEFDINIR FOR ORAL SUSPENSION PEDIATRIC DOSAGE CHART Weight 125 mg/5 mL 250 mg/5 mL 9 kg/20 lbs 2.5 mL q12h or 5 mL q24h Use 125 mg/5 mL product 18 kg/40 lbs 5 mL q12h or 10 mL q24h 2.5 mL q12h or 5 mL q24h 27 kg/60 lbs 7.5 mL q12h or 15 mL q24h 3.75 mL q12h or 7.5mL q24h 36 kg/80 lbs 10 mL q12h or 20 mL q24h 5 mL q12h or 10 mL q24h ≥ 43 kg 1 /95 lbs 12 mL q12h or 24 mL q24h 6 mL q12h or 12 mL q24h 1. Pediatric patients who weigh ≥ 43 kg should receive the maximum daily dose of 600 mg. Patients With Renal Insufficiency For adult patients with creatinine clearance < 30 mL/min, the dose of cefdinir should be 300 mg given once daily. Creatinine clearance is difficult to measure in outpatients. However, the following formula may be used to estimate creatinine clearance (CL cr ) in adult patients. For estimates to be valid, serum creatinine levels should reflect steady-state levels of renal function. Males: CL cr = (weight) (140 − age) (72) (serum creatinine) Females: CL cr = 0.85 × above value where creatinine clearance is in mL/min, age is in years, weight is in kilograms, and serum creatinine is in mg/dL. 1 The following formula may be used to estimate creatinine clearance in pediatric patients: CL cr = K × body length or height serum creatinine where K = 0.55 for pediatric patients older than 1 year 2 and 0.45 for infants (up to 1 year) 3 .

Excerpted — the section continues on the label. Read the full Dosage and Administration section on DailyMed →

Cefdinir side effects

▾

Most side effects are mild and go away on their own. The most common are:

Common side effects

  • Diarrhea
  • Nausea
  • Headache
  • Abdominal pain
  • Vaginal yeast infection or vaginitis in women
  • Rash (diaper rash is common in young children)
  • Indigestion, gas or vomiting
  • Rash, especially diaper rash in children 2 and younger

When to get medical help

  • Signs of a serious allergic reaction, such as trouble breathing, swelling of the face or throat, or a severe rash. Get emergency help.
  • Severe or bloody diarrhea, even weeks or months after finishing the antibiotic. Call your doctor.
  • Blistering or peeling skin, or sores in the mouth. Call your doctor right away.
  • Yellowing of the skin or eyes, or signs of liver problems. Call your doctor.
  • A seizure. Cephalosporins have been linked to seizures, especially in people with kidney problems when the dose was not lowered.

Cefdinir warnings and precautions

▾
  • Serious allergic reactions can happen. Cross-reactions with penicillin allergy can occur in up to 10% of those with that history.
  • C. difficile diarrhea can range from mild to fatal colitis and may appear over two months after treatment.
  • Antibiotics should only be used for infections that are proven or strongly suspected to be bacterial, which helps prevent drug-resistant bacteria.
  • Seizures have been reported with cephalosporins, especially in people with kidney problems whose dose was not lowered.

Cefdinir interactions

▾

A few products change how well cefdinir works or how long it stays in the body:

  • Aluminum- or magnesium-containing antacids: lower absorption by about 40%. Separate by at least 2 hours.
  • Iron supplements: can lower absorption by up to 80%. Separate by at least 2 hours.
  • Probenecid: slows kidney clearance and roughly doubles drug exposure.
  • Iron-containing products: may cause harmless reddish stools.

Interactions listed in the FDA-approved label

From the Cefdinir prescribing information (“Drug Interactions”): what the manufacturer studied or reported to the FDA.

  • Antacids (Aluminum- or Magnesium-Containing): Taking 300 mg cefdinir capsules with 30 mL Maalox TC suspension reduces the rate (Cmax) and extent (AUC) of absorption by approximately 40% and prolongs time to Cmax by 1 hour. Take cefdinir at least 2 hours before or after the antacid; no significant effect if the antacid is given 2 hours before or after cefdinir.
  • Probenecid: Probenecid inhibits the renal excretion of cefdinir, resulting in an approximate doubling in AUC, a 54% increase in peak plasma levels, and a 50% prolongation in apparent elimination t½.
  • Iron supplements: A therapeutic iron supplement with 60 mg elemental iron (as FeSO4) reduced extent of absorption by 80%, and vitamins with 10 mg elemental iron reduced it by 31%. Take cefdinir for oral suspension at least 2 hours before or after the supplement.
  • Foods highly fortified with iron (e.g., iron-fortified breakfast cereals): The effect on cefdinir absorption has not been studied.
  • Iron-fortified infant formula: Iron-fortified infant formula (2.2 mg elemental iron/6 oz) has no significant effect on cefdinir pharmacokinetics. Cefdinir for oral suspension can be administered with iron-fortified infant formula.
Read the label’s full interactions text

Drug Interactions Antacids (Aluminum- or Magnesium-Containing) Concomitant administration of 300 mg cefdinir capsules with 30 mL Maalox ® TC suspension reduces the rate (C max ) and extent (AUC) of absorption by approximately 40%. Time to reach C max is also prolonged by 1 hour. There are no significant effects on cefdinir pharmacokinetics if the antacid is administered 2 hours before or 2 hours after cefdinir. If antacids are required during cefdinir for oral suspension therapy, cefdinir for oral suspension should be taken at least 2 hours before or after the antacid. Probenecid As with other β-lactam antibiotics, probenecid inhibits the renal excretion of cefdinir, resulting in an approximate doubling in AUC, a 54% increase in peak cefdinir plasma levels, and a 50% prolongation in the apparent elimination t ½ . Iron Supplements and Foods Fortified With Iron Concomitant administration of cefdinir with a therapeutic iron supplement containing 60 mg of elemental iron (as FeSO 4 ) or vitamins supplemented with 10 mg of elemental iron reduced extent of absorption by 80% and 31%, respectively. If iron supplements are required during cefdinir for oral suspension therapy, cefdinir for oral suspension should be taken at least 2 hours before or after the supplement. The effect of foods highly fortified with elemental iron (primarily iron-fortified breakfast cereals) on cefdinir absorption has not been studied. Concomitantly administered iron-fortified infant formula (2.2 mg elemental iron/6 oz) has no significant effect on cefdinir pharmacokinetics. Therefore, cefdinir for oral suspension can be administered with iron-fortified infant formula. There have been reports of reddish stools in patients receiving cefdinir. In many cases, patients were also receiving iron-containing products. The reddish color is due to the formation of a nonabsorbable complex between cefdinir or its breakdown products and iron in the gastrointestinal tract.

Read the full Drug Interactions section on DailyMed →

Not a complete list. The label covers the interactions the manufacturer studied or reported, and our own interaction database does not cover every medicine either. Bring your full medication list, including vitamins and herbal products, to your pharmacist.

Before taking Cefdinir

▾
  • Do not take cefdinir if you are allergic to cephalosporin antibiotics.
  • Tell your prescriber about any past reaction to penicillins or other drugs.
  • Tell your prescriber if you have kidney disease or are on dialysis.
  • Children’s doses depend on weight.

Cefdinir overdose

▾

Information on overdose in humans is not available. Overdose with similar antibiotics has caused nausea, vomiting, stomach discomfort, diarrhea and convulsions. Hemodialysis removes cefdinir from the body, which may help in a serious reaction, especially with poor kidney function.

How your body processes Cefdinir

▾

Cefdinir reaches its highest blood level about 2 to 4 hours after a dose. Only a portion is absorbed, and food has little clinically important effect. It does not build up in the body with once- or twice-daily dosing when kidneys work normally. Hemodialysis removes it, and probenecid slows its removal. It reaches skin, tonsil and sinus tissue.

How to store Cefdinir

▾

Store the unsuspended powder at 20° to 25°C (68° to 77°F) . stored at controlled room temperature for 10 days.

Written from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →

60

Supplements & herbs that interact with Cefdinir

60 supplements and herbal products have documented interactions with Cefdinir in the licensed clinical database we use. Most are manageable — but your pharmacist should know about everything you take, including vitamins and herbals.

Severity mix
  • Major · 3
  • Moderate · 46
  • Minor · 11
Every supplement checked against Cefdinir — ranked by severity The full interaction hub: 3 major · 46 moderate · 11 minor · every one linked to its full report. Check Cefdinir against your exact supplements

Educational information from a licensed clinical database (Natural Medicines) — see our data sources & update cadence. Not medical advice: an interaction being documented does not mean it will happen to you; do not start or stop medications or supplements without professional guidance.

7

Nutrient depletion considerations

Cefdinir has been associated with lower levels of 7 nutrients in the clinical literature. This does not mean a deficiency will occur — it means these may be worth discussing with your pharmacist or healthcare provider, especially with long-term use.

Evidence & significance mix
  • Higher significance · 6
  • Moderate · 1
See the full Cefdinir nutrient depletion report

Educational information from a licensed clinical database (Natural Medicines) — not medical advice. Do not start or stop medications or supplements without professional guidance.

Cefdinir: pharmacist answers to common questions

Quick, plain-English answers to the questions patients ask most about Cefdinir — the kind of thing our pharmacy team would talk through with you at the counter.

What is cefdinir used for?

▾
It treats mild to moderate bacterial infections such as pneumonia, sinus infections, strep throat, skin infections and, in children, ear infections. It will not help colds or the flu, because those are caused by viruses.

Do I need to take it with food?

▾
No. You can take it with or without food. Try to take it at about the same times each day, and finish the full course even if you feel better.

I take an antacid or iron. Is that a problem?

▾
It can be. Aluminum or magnesium antacids and iron supplements can lower how much cefdinir your body absorbs. Take cefdinir at least 2 hours before or after them.

Why are my stools red?

▾
Reddish stools have been reported, often in people also taking iron-containing products. It happens when cefdinir binds with iron in the gut and is not a sign of bleeding. Still, call us if you are unsure or have other symptoms.

What side effects should I expect?

▾
Diarrhea is the most common, and nausea, headache and stomach pain can happen too. Women may get a vaginal yeast infection, and young children may get diaper rash. Call your doctor for severe or bloody diarrhea, swelling, trouble breathing or a bad skin reaction.

I’m allergic to penicillin. Can I still take it?

▾
Maybe, but be careful. Up to 10% of people with a penicillin allergy may also react to related antibiotics like cefdinir. Always tell your prescriber and pharmacist about your allergy history.

Is Cefdinir available over the counter?

▾
No. Cefdinir is a prescription medicine: every Cefdinir product listed with the FDA is prescription only, so it is not sold over the counter. Your prescriber decides whether it is appropriate for you, and your pharmacist dispenses it.

When was Cefdinir first available?

▾
The earliest FDA record we hold for Cefdinir is from 1997: its first approval in Drugs@FDA or its earliest product listing in the NDC Directory, whichever is older. Many older medicines were in use before their first formal FDA approval, so this is the earliest date on record, not necessarily when Cefdinir was first used.

Who makes Cefdinir?

▾
21 companies currently list Cefdinir products in the FDA's NDC Directory, including NuCare Pharmaceuticals,Inc., A-S Medication Solutions, Preferred Pharmaceuticals Inc.. That count includes repackagers and distributors as well as manufacturers (companies that sell only the raw ingredient are not counted), so fewer companies actually make it; the label on your bottle names the one that supplied yours.

Answers drafted from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →

More about Cefdinir on HelloPharmacist

Detailed data & references for Cefdinir Forms & strengths, pricing, billing codes, manufacturers, safety reports and sourcing — the data behind the page. Most people can stop here. Each section below opens on a tap.

Cefdinir forms and strengths (how it comes)

Cefdinir is available in 2 forms. Different forms and brands can have different approved uses, doses, schedules, and directions. Follow the instructions for your exact product, and do not switch forms without guidance from your prescriber or pharmacist.

Capsule

By mouth
How this form is used
What it may be used for
  • Cefdinir capsules are used in adults and adolescents for community-acquired pneumonia, chronic bronchitis flare-ups, sinus infections, throat and tonsil infections, and uncomplicated skin infections.
Important instructions
  • Cefdinir capsules may be taken with or without food.
  • Cefdinir capsules are given twice daily for pneumonia and skin infections; other infections may allow once- or twice-daily dosing.
  • Cefdinir capsules should be taken at least 2 hours before or after antacids and iron supplements.
  • The label notes that the oral suspension may be better suited for children.
Available strengths 1 strength
91 FDA-listed product records ⓘ

Oral suspension

By mouth
How this form is used
What it may be used for
  • Cefdinir for oral suspension is used in children for middle ear infections, throat and tonsil infections, and uncomplicated skin infections.
  • Cefdinir for oral suspension is also labeled for use in adults and adolescents for pneumonia, chronic bronchitis flare-ups and sinus infections.
Important instructions
  • Cefdinir for oral suspension is mixed with water as directed, and the bottle should be shaken well before each dose.
  • Cefdinir for oral suspension may be used for 10 days after mixing, then any leftover must be thrown away.
  • Cefdinir for oral suspension can be given with or without food and with iron-fortified infant formula.
  • Cefdinir for oral suspension should be taken at least 2 hours before or after antacids and iron supplements.
Available strengths 2 strengths
62 FDA-listed product records ⓘ

Cefdinir on the U.S. market: products, makers and brands

How Cefdinir appears in the FDA’s National Drug Code Directory — including its dosage forms, strengths, brand names, manufacturers, and FDA-listed product records. These are directory records, not sales or prescription volume.

21 companies list 78 Cefdinir product records with the FDA, mostly as capsule, oral suspension; the earliest marketing or approval year on record is 1997. Brand names on the directory include Omnicef; the rest are generics.

2
Dose forms ⓘ
21
Labelers (makers, repackagers, distributors)
1
Brand names
78
FDA-listed product records ⓘ
1997
Earliest FDA record ⓘ

FDA-listed product records by dose form (tablet variants merged) — FDA National Drug Code Directory. Record counts are not sales or prescription volume.

Also listed with the FDA, not a patient dose form: Powder (6) — bulk drug substance sold to compounders/manufacturers and multi-item kits. These aren’t counted in the dose-form total above.

NuCare Pharmaceuticals,Inc.18%
A-S Medication Solutions15%
Preferred Pharmaceuticals Inc.10%
Proficient Rx LP9%
Direct Rx8%
PD-Rx Pharmaceuticals, Inc.6%
Other makers33%

Share of FDA-listed product records by manufacturer — FDA National Drug Code Directory. Record counts are not sales or prescription volume.

How widely Cefdinir is used (Medicaid data)

A general measure of how commonly Cefdinir is prescribed, based on Medicaid — one of the largest public drug programs. The figure below is prescriptions filled in Q1–Q4 2025, summed across every form and brand of the drug.

Think of this as a proxy for how widely Cefdinir is used, drawn from freely available public data. Medicaid is just one program — these numbers don’t include Medicare, other government coverage, or commercial and cash-pay prescriptions, so real-world use is higher than what’s shown here.

2,236,722
Medicaid prescriptions filled (Q1–Q4 2025)
$38.8M gross Medicaid reimbursement (before mandatory rebates — net cost is lower)

How commonly is Cefdinir prescribed? Of the 1,601 medications we measure, Cefdinir ranks #99 by Medicaid prescriptions — more than 94% of them.

Where Cefdinir ranks among the drugs we measure · Q1–Q4 2025 · neighbors ±5

Utilization by Cefdinir product

Pick a product to see its own Medicaid numbers. Each chip is one clinical product — a specific strength & dosage form as defined by RxNorm — with brand-name and generic versions combined.

The 50 mg/mL oral suspension is the most-dispensed Cefdinir product — about 50% of these Medicaid prescriptions.

cefdinir 50 MG/ML Oral Suspension Most dispensed

1,125,025 Medicaid prescriptions (Q1–Q4 2025) 50% of Cefdinir prescriptions shown $21.6M gross reimbursement (before rebates) ≈ $19 per prescription (gross)

Summed across the 8 of 39 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 476576

cefdinir 300 MG Oral Capsule

848,688 Medicaid prescriptions (Q1–Q4 2025) 38% of Cefdinir prescriptions shown $12.4M gross reimbursement (before rebates) ≈ $15 per prescription (gross)

Summed across the 8 of 123 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 200346

cefdinir 25 MG/ML Oral Suspension

263,009 Medicaid prescriptions (Q1–Q4 2025) 12% of Cefdinir prescriptions shown $4.8M gross reimbursement (before rebates) ≈ $18 per prescription (gross)

Summed across the 8 of 32 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 309054

Shares are of the Medicaid prescriptions shown here. Product grouping follows RxNorm (the National Library of Medicine’s drug terminology), so “one product” means one strength & dosage form regardless of manufacturer. Dollar figures are gross Medicaid reimbursement before mandatory rebates — rebates (often large, especially for brand-name drugs) are confidential, so actual net cost to Medicaid is lower than shown.

Source: Medicaid State Drug Utilization Data (CMS), aggregated by generic ingredient — summed across every NDC (all brands, strengths, salt forms and dosage forms) of Cefdinir, and across all states and both fee-for-service and managed-care claims. A general popularity signal; it excludes Medicare, commercial insurance and cash prescriptions, so it is not total U.S. use. Based on the 24 of 194 listed Cefdinir NDCs with Medicaid activity.

Compare Cefdinir products

A representative set of FDA-listed product records for Cefdinir — across manufacturers, strengths, and dosage forms, grouped by form with each product’s manufacturer and how the FDA approved it. The same medicine may be made and packaged by different companies, so a single drug can have many directory entries. (It’s also why a refill can look different — a new shape, color, or box — even though it contains the same medication.)

Showing 78 of 78 products — FDA National Drug Code Directory. See every product, package size and price: browse all 78 Cefdinir NDCs →

Cefdinir side effects reported to the FDA (FAERS)

After a medicine reaches the market, patients, doctors and drugmakers can send the FDA reports of problems they think may be linked to it. Here’s what’s been reported for Cefdinir — a signal of what to watch for, not proof the drug caused it.

The effects most often named in FDA reports that mention Cefdinir are diarrhoea, chronic kidney disease, pneumonia; about 63% of the reports were classed as serious. These are voluntary reports, so they show what people report, not how often it happens.

7,629
Reports mentioning it
63%
Reported as serious
12
Distinct effects shown
Most reported effects
Diarrhoea
531
Chronic Kidney Disease
485
Pneumonia
482
Fatigue
463
Nausea
401
Pain
374
Renal Failure
362
Sinusitis
361
Headache
332
Dyspnoea
327
Age groups
Adult · 672Elderly · 533Child · 77Adolescent · 47Infant · 22Neonate · 4

Source: openFDA, from the FDA Adverse Event Reporting System (FAERS). These are voluntary reports — they don’t prove the drug caused the effect, and counts reflect how often something was reported, not how often it actually happens. Reports also often name the very problem the medicine is taken for — a common reason to file one is that the drug didn’t help — so for a pain reliever you may see “pain” high on the list; that points to why the report was filed, not to the drug causing the symptom. This counts every report that lists Cefdinir in any role, so the total runs higher than the FDA’s official dashboard, which counts only cases where the drug is the suspect. For the authoritative figures, see the FDA FAERS Public Dashboard. Always talk to your pharmacist or doctor.

Cefdinir FDA approval history

How Cefdinir went from FDA review to the pharmacy shelf — the key milestones in its regulatory journey.

Cefdinir was first approved by the FDA in 1997 (Brand: OMNICEF · Abbvie); the first generic version was approved in 2006. It remains available in U.S. pharmacies today.

1997
Brand approved
Brand: OMNICEF · Abbvie
2006
First generic approved
Lower-cost ANDA competition begins
2026
Available today
Active in U.S. pharmacies

Source: Drugs@FDA.

Cefdinir recall history

A recall is when a specific batch of a medicine is pulled from the market — usually a manufacturing issue, not a problem with the drug itself. Class I is most serious, Class III least.

The FDA’s enforcement reports list 2 Cefdinir recalls since July 2021, covering 3 product listings. None of them is still listed as ongoing. A recall names specific lots from one company, so check the lot number on your own bottle rather than assuming every product is affected; your pharmacist can check whether your supply came from an affected lot.

Class II May 8, 2024 · Terminated · Lupin Pharmaceuticals Inc.
Defective container: lack of seal integrity.
  • Cefdinir for Oral Suspension USP, 250 mg/5 mL, packaged in a 60 mL bottle, Rx only, Manufactured for: Lupin Pharmaceuticals, Inc., Baltimore, MD 21202, Manufactured by: Lupin Limited, Mandideep, 462… Lots: Lot #F305184, F305185, F305186, Exp 7/31/ 2025 FDA record D-0518-2024 →
Class II Apr 24, 2024 · Terminated · Lupin Pharmaceuticals Inc.
Presence of foreign substance: Product complaint of foreign material in reconstituted bottle.
  • Cefdinir for Oral Suspension USP 125 mg/5 mL (60 mL when reconstituted), 60 mL bottle, Rx only, Manufactured for: Lupin Pharmaceuticals, Inc., Baltimore, Maryland 21202, United States, Manufactured b… Lots: Lot # F305292, Exp 8/30/2025 FDA record D-0497-2024 →
  • Cefdinir for Oral Suspension USP 250 mg/5 mL (60 mL when reconstituted), 60 mL bottle, Rx only, Manufactured for: Lupin Pharmaceuticals, Inc., Baltimore, Maryland 21202, United States, Manufactured b… Lots: Lot # F305442, Exp 8/30/2025 FDA record D-0496-2024 →

Source: FDA enforcement (recall) reports, via openFDA; our copy was last updated Sep 24, 2026.

RxNorm Concept Web — From Ingredient to Every Form and Strength

This page starts with one ingredient concept (IN). The branches below show its dose-form concepts (SCDF), then the available clinical drug and strength concepts (SCD). Combination products remain separate concepts with their own pages.

Ingredient (IN) Cefdinir RxCUI 25037 2 dose forms · 3 strengths
  1. Dose form (SCDF) Oral Capsule RxCUI 371325 In current FDA listings
    Clinical drug / strength (SCD) 300 MG RxCUI 200346
  2. Dose form (SCDF) Oral Suspension RxCUI 371326 In current FDA listings
    Clinical drug / strength (SCD) 25 MG/ML RxCUI 309054 50 MG/ML RxCUI 476576

Look up RxCUI 25037 in the RxCUI Atlas →

RxNorm is the U.S. National Library of Medicine’s normalized drug vocabulary. Its concept hierarchy can include forms that are not currently marketed; the status on each branch compares that concept with current FDA listings. RxCUIs identify vocabulary concepts, not individual packages or manufacturers.

💵 What Cefdinir costs pharmacies (NADAC benchmark)

The national average invoice price pharmacies pay for the drug itself, from CMS's NADAC survey (data as of Sep 30, 2026). This is a supply-cost benchmark — not a retail price and not what you'd pay at the counter.

FormStrengthPharmacy acquisition benchmark
Capsule · Oral 300 mg $0.458 per capsule NDC details & price history
Capsule 300 mg $0.458 per capsule NDC details & price history
Why show this? Your out-of-pocket cost depends on insurance, pharmacy markup, and discounts — but the acquisition benchmark tells you whether the medication itself is inexpensive or costly, which strengths cost more per dose, and whether a cash-price quote is in a reasonable range. Each row links to the NDC-level record with its full price history.

Source: CMS National Average Drug Acquisition Cost (NADAC), a survey of retail pharmacy invoice prices. Benchmarks shown are the range across package sizes of a representative product for each form and strength — other manufacturers' products may differ.

Cefdinir brand names

Cefdinir is sold under one brand name in the FDA directory — Omnicef. A brand and its generic contain the same active ingredient; the brand name belongs to one company's product.

Omnicef

Who makes Cefdinir: manufacturers and labelers

21 companies list Cefdinir products with the FDA. By number of product records, the largest are NuCare Pharmaceuticals,Inc., A-S Medication Solutions, Preferred Pharmaceuticals Inc.. Labelers include manufacturers and repackagers; the product in your bottle depends on which one your pharmacy stocks.

NuCare Pharmaceuticals,Inc. 14 A-S Medication Solutions 12 Preferred Pharmaceuticals Inc. 8 Proficient Rx LP 7 Direct Rx 6 PD-Rx Pharmaceuticals, Inc. 5 Ascend Laboratories, LLC 3 Aurobindo Pharma Limited 3 Lupin Pharmaceuticals, Inc. 3 Teva Pharmaceuticals USA, Inc. 3 Asclemed USA, Inc. 2 Bryant Ranch Prepack 2 Remedyrepack Inc. 2 American Health Packaging 1 AvKARE 1 BluePoint Laboratories 1 Major Pharmaceuticals 1 Northwind Health Company, LLC 1 Redpharm Drug, Inc. 1 Rising Pharma Holdings, Inc. 1 Sandoz Inc 1

Cefdinir drug class (RxNorm)

Cefdinir belongs to the Cephalosporin Antibacterial class.

Pharmacologic class Cephalosporin Antibacterial
Drug family (ATC) Third-generation cephalosporins

Classified by RxNorm RxClass — the U.S. National Library of Medicine's standardized drug-classification service (Established Pharmacologic Class from the FDA, the ATC drug family from the WHO, and mechanism of action). Reference only, not medical advice.

Sources for this Cefdinir page

Core label, product, RxNorm, safety, and utilization data on this page come from the sources identified below. AI-written, editorial, and licensed sections are labeled separately.

📄
FDA-filed drug labels (SPL) Uses, dosing, warnings & side effects from SPL records retrieved through openFDA; the linked representative set can be verified on DailyMed. ✓ Linked label effective Nov 1, 2019
🏭
Forms, brands & labelersAggregated from ingredient-matched FDA National Drug Code Directory product records for Cefdinir.
📈
Real-world reportsThe FDA Adverse Event Reporting System (FAERS), served through openFDA.
🚨
Recalls & shortagesopenFDA drug-enforcement reports and the FDA drug-shortage database.
🧾 Clinical label set — FDA-filed SPL labels retained for Cefdinir after exact ingredient or ingredient-combination matching and applicable route/form matching
Clinical labels in scope
81
Finished products in the current FDA directory
78
Companies listing them (makers, repackagers, distributors)
21
FDA labeler codes behind them ⓘ
23
Linked representative label ⓘ
Proficient Rx LP
Linked label effective
Nov 1, 2019
Composite sections available
20
Linked SPL Set ID
f30d01e3-0839-4928-a45a-b46c89aa454c
Linked SPL Document ID
a1a1f2d7-b989-41f7-a770-ae1b4b6231ce
Open the linked representative label on DailyMed ↗

How this page is built

HelloPharmacist combines public FDA and NLM records and does not author the underlying clinical facts. The plain-language sections are written with AI from the FDA-approved label text and reviewed by our pharmacy team before publication. Proficient Rx LP is the representative DailyMed label linked for verification and dates. This is general education, not medical advice: always talk to your doctor or pharmacist about your own medicines. How we build and review drug pages →