prostaphlin
Prostaphlin (Oxacillin Sodium) is a penicillin-class antibacterial used to treat Cellulitis, Bacterial Endocarditis, Osteomyelitis, Postoperative Complications.
Oxacillin Sodium · by Apothecon
Available as a generic: Oxacillin Sodium
Key facts
- Active ingredient
- Oxacillin Sodium
- Drug class
- Penicillin-Class Antibacterial
- Form
- Capsule
- Strength
- Oxacillin Sodium EQ 500MG Base
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- cellulitis, bacterial endocarditis, osteomyelitis
- Manufacturer
- Apothecon
- FDA application
- NDA050118
- Availability
- Discontinued (per FDA)
Drug class
May treat (source: NIH RxClass)
- cellulitis
- bacterial endocarditis
- osteomyelitis
- postoperative complications
- respiratory tract infections
- staphylococcal infections
See how Prostaphlin ranks — best-rated penicillin-class antibacterial for:
Dosage forms
Capsule
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
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Frequently asked questions
- What does Prostaphlin treat?
- Prostaphlin (Oxacillin Sodium) may be used to treat cellulitis, bacterial endocarditis, osteomyelitis, postoperative complications, respiratory tract infections, staphylococcal infections, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- Is there a coupon or discount for Prostaphlin?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Prostaphlin. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Prostaphlin?
- Prostaphlin is marketed by Apothecon. You can see Apothecon's full profile, rating, and other products on pharmaranks.
- Is Prostaphlin a brand-name or generic drug?
- Prostaphlin is a brand-name product with the active ingredient Oxacillin Sodium. Lower-cost generic equivalents containing Oxacillin Sodium are available — ask your pharmacist.
- Is Prostaphlin available over the counter?
- No. Prostaphlin is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Prostaphlin come in?
- Prostaphlin is currently marketed as capsule, per the FDA's National Drug Code Directory.
- What class of drug is Prostaphlin?
- Prostaphlin is classified as penicillin-class antibacterial, per the FDA's Established Pharmacologic Class.
- Is Prostaphlin FDA-registered?
- Prostaphlin is on record with the U.S. FDA under application number NDA050118. You can verify this on its official FDA label.
Information is sourced from public FDA regulatory data. Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
What people report to the FDA about OXACILLIN SODIUM
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 169 reports naming OXACILLIN SODIUM — the active ingredient in Prostaphlin, and the FDA flagged 86% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- drug reaction with eosinophilia and systemic symptoms17 reports
- hepatic cytolysis11 reports
- toxic epidermal necrolysis11 reports
- pyrexia10 reports
- drug-induced liver injury9 reports
- diarrhoea8 reports
- eosinophilia8 reports
- rash8 reports
Read these as a signal, not a rate. A report does not mean OXACILLIN SODIUM caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label.
Source: openFDA drug/event (FAERS), retrieved September 25, 2026.
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