nafcillin sodium (Nafcillin) (Injection) 1 g/4mL

Nafcillin sodium injection is a penicillin-type antibiotic used to treat bacterial infections. This sterile solution comes in a 1 g/4mL vial for intravenous or intramuscular use. It works against certain gram-positive bacteria by disrupting cell wall formation. Always follow healthcare provider guidance when using this medication.

Strength

1 g/4mL

Manufacturer / TM Owner

Sagent Pharmaceuticals

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Indications & Clinical Uses

Nafcillin sodium is commonly prescribed for infections caused by susceptible staphylococci, including penicillinase-producing strains. It is often used for skin and soft tissue infections, bone and joint infections, and certain respiratory tract infections. Healthcare professionals may recommend it when oral antibiotics are not suitable or effective. Always consult a doctor to determine if nafcillin sodium is appropriate for your condition.

Side Effects

As an antibiotic, nafcillin sodium works by interfering with the bacteria’s ability to build protective cell walls, leading to bacterial breakdown. Patients may experience relief from symptoms such as fever, swelling, or pain as the infection begins to clear. It does not treat viral infections like colds or flu. Individual responses may vary based on infection type and severity.

Precautions & Warnings

Store nafcillin sodium injection at controlled room temperature and protect it from light. Use only as directed by a healthcare professional. Discard any unused portion after preparation or if the solution appears discolored or contains particles. Keep out of reach of children and pets. Inform your provider about any allergies, especially to penicillin or cephalosporins.

Avoid Interactions

Nafcillin sodium may interact with other medications, including certain blood thinners, oral contraceptives, and drugs processed by the liver. Combining it with alcohol may reduce effectiveness or increase side effects. Always inform your healthcare provider about all prescription, over-the-counter, and herbal products you are using. Regular monitoring may be recommended during combined therapy.

Frequently Asked Questions

Nafcillin sodium is an antibiotic used to treat infections caused by certain bacteria, particularly penicillin-resistant staphylococci.

It is given by injection into a vein or muscle as prescribed by a healthcare professional.

No, nafcillin sodium requires a valid prescription from a licensed healthcare provider for legal purchase.

Possible side effects include rash, nausea, or pain at the injection site; report persistent issues to a doctor.

Consult your healthcare provider; safety depends on individual health factors and should be assessed case by case.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated: 28 Jul 2026

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