Generic Nafcillin

Nafcillin is only available in generic form, as the brand-name versions of the drug are no longer manufactured. The U.S. Food and Drug Administration has tested the generic nafcillin products that are currently available and has determined that they are equivalent to each other. These generics come in 1-gram, 2-gram, and 10-gram vials, and are made by various manufacturers.

Is There a Generic Version of Nafcillin?

Nafcillin is a prescription antibiotic. It is a penicillin medication that is given intravenously (by IV) or injected into a muscle (by IM injection). It is used to treat a variety of different infections.
 
Nafcillin was sold under the brand names of Nallpen® and Unipen®, but the brand-name medications are no longer available. Nafcillin is still available from generic manufacturers.
 

Available Strengths

Generic nafcillin is available in 1-gram and 2-gram vials, as well as 10-gram bulk pharmacy vials that are used in hospitals or other settings that use nafcillin frequently. It is made by various different companies, such as:
 
  • APP Pharmaceuticals
  • Sagent Pharmaceuticals
  • Sandoz, Inc.
 

Are All Nafcillin Products the Same?

All generic medications must undergo certain tests to compare them to brand-name medications, or, if there are no brand-name versions on the market, to each other. The U.S. Food and Drug Administration (FDA) then looks at these tests to decide if the generics are equivalent and assigns each generic a rating.
 
An "AP" rating means that the FDA has determined that a generic medication is equivalent. All of the generic nafcillin versions currently available have an "AP" rating, meaning they should be equivalent to each other.
 
However, generic medications are allowed to have different inactive ingredients. This might include fillers, dyes, or other ingredients that may cause problems for people with allergies or sensitivities.
 

Nafcillin Antibiotic Information

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