Ceftriaxone is a third-generation cephalosporin antibiotic given by injection to treat serious bacterial infections including pneumonia, meningitis, urinary tract infections, gonorrhea, and sepsis.

What Is Ceftriaxone?

Ceftriaxone (brand name: Rocephin, now discontinued) is a broad-spectrum injectable antibiotic in the cephalosporin class. It works by killing bacteria that cause infections throughout the body.

Here are the key facts:

• Generic name: Ceftriaxone Sodium
• Brand name: Rocephin (discontinued; only generics are available)
• Drug class: Third-generation cephalosporin antibiotic
• Manufacturers: Multiple generic manufacturers including Hikma, Sandoz, Apotex, Fresenius Kabi, and WG Critical Care
• FDA approved: Yes, for multiple indications
• Controlled substance: No — Ceftriaxone is not a controlled substance
• How it's given: By intravenous (IV) infusion or intramuscular (IM) injection only. It is not available as a pill or oral medication.

What Is Ceftriaxone Used For?

Ceftriaxone is FDA-approved for treating a wide range of bacterial infections:

• Lower respiratory tract infections — including community-acquired pneumonia
• Urinary tract infections — including complicated UTIs and pyelonephritis
• Bacterial meningitis — a life-threatening infection of the brain and spinal cord lining
• Bacterial septicemia — bloodstream infections
• Skin and skin structure infections — including cellulitis and wound infections
• Bone and joint infections — including osteomyelitis
• Intra-abdominal infections — including peritonitis
• Gonorrhea — single-dose treatment for uncomplicated infections
• Pelvic inflammatory disease (PID)
• Surgical prophylaxis — preventing infection during surgery
• Acute bacterial otitis media — middle ear infections in children

Ceftriaxone is also used off-label for several other conditions, including:

• Lyme disease (neuroborreliosis)
• Infective endocarditis
• Typhoid fever
• Neurosyphilis
• Febrile neutropenia
• Prophylaxis for close contacts of meningitis patients

How Is Ceftriaxone Given?

Ceftriaxone is always administered by a healthcare provider — it's not a medication you take at home on your own (though home IV therapy with nursing support is possible for extended courses).

There are two administration routes:

• Intravenous (IV) infusion — Delivered through a vein over 30-60 minutes. This is the most common route for hospitalized patients and those at infusion centers.
• Intramuscular (IM) injection — A shot given in a large muscle (usually the buttock or thigh). Used for single-dose treatments and outpatient settings.

Available Formulations

• Powder for injection: 250 mg, 500 mg, 1 g, and 2 g vials
• Premixed frozen IV bags: 1 g/50 mL and 2 g/50 mL in dextrose
• ADD-Vantage vials: 1 g and 2 g
• Pharmacy bulk package: 10 g

Typical Dosing

• Most infections: 1-2 g once daily (or divided every 12 hours), IV or IM
• Meningitis: 2 g every 12 hours IV
• Gonorrhea: Single 500 mg IM dose
• Surgical prophylaxis: 1 g single dose within 1 hour before incision
• Maximum daily dose: 4 g

Treatment duration varies from a single dose (gonorrhea) to 4-6 weeks (endocarditis, osteomyelitis) depending on the infection being treated.

Who Should Not Take Ceftriaxone?

Ceftriaxone is contraindicated in certain groups:

• Allergy to cephalosporins — Anyone with a known hypersensitivity to Ceftriaxone or other cephalosporin antibiotics should not receive it.
• Premature neonates — Contraindicated up to a corrected age of 41 weeks.
• Jaundiced (hyperbilirubinemic) newborns — Ceftriaxone can displace bilirubin from albumin, worsening jaundice.
• Neonates receiving calcium-containing IV solutions — Risk of fatal ceftriaxone-calcium precipitates in the lungs and kidneys.

Patients with penicillin allergies should discuss their allergy history with their doctor. Cross-reactivity is estimated at only 1-2%, so most patients with mild penicillin allergies can safely receive Ceftriaxone.

For more on side effects and risks, see our detailed guide on Ceftriaxone side effects.

How Much Does Ceftriaxone Cost?

Because Ceftriaxone is a generic medication with multiple manufacturers, it's relatively affordable — though prices vary by formulation and where you receive it:

• Cash price: $5 to $55 per vial depending on strength
• With discount coupons: As low as $4.61-$6.60 per 1 g vial at retail pharmacies
• Premixed IV bags: $20-$25 per bag

Most insurance plans (including Medicare, Medicaid, and commercial insurance) cover Ceftriaxone as a preferred generic injectable antibiotic. When administered in a hospital or clinic, it's typically billed under the medical benefit rather than the pharmacy benefit.

There are no manufacturer savings programs or copay cards for Ceftriaxone since it's a multi-source generic. For financial assistance, check our savings guide or resources like NeedyMeds and RxAssist.

Final Thoughts

Ceftriaxone is a workhorse antibiotic — effective against a wide range of serious infections, convenient with once-daily dosing, and generally well-tolerated. Its main drawback is that it must be given by injection, which means you'll need a healthcare provider, clinic, or infusion center to receive it.

In 2026, the biggest challenge with Ceftriaxone is availability. Ongoing shortages have made it harder to find at some pharmacies and hospitals. If you're having trouble locating it, Medfinder can help you find pharmacies and clinics with current stock.

For more information, explore our guides on how Ceftriaxone works, drug interactions, and finding a doctor who can prescribe it.