Penicillin 250mg
Generic For: Pen-Vee K
Penicillin 250mg (Pen-Vee K) is a prescription penicillin-class antibiotic used to treat bacterial infections such as strep throat, mild skin infections, and certain dental infections. While many people search for penicillin or amoxicillin over the counter, both require a prescription in the U.S. After review by a licensed provider, your order ships from a licensed U.S. pharmacy.
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10-day supply · $0.75/tablet
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Buy Penicillin 250mg (Pen-Vee K) Online
A penicillin-class antibiotic for strep throat, skin infections, and dental infections
Penicillin 250mg Quick Facts
| Drug class | Penicillin antibiotic |
|---|---|
| Treats | Strep throat, skin infections, dental infections, rheumatic fever prevention |
| Form | Tablet |
| Typical dosing | Take 1 tablet by mouth 4 times daily for 10 days. |
| Prescription required | Yes — prescription only |
What Is Penicillin 250mg?
Penicillin 250mg, known by the brand name Pen-Vee K (penicillin V potassium), is an oral antibiotic that works by stopping the growth of susceptible bacteria. It is commonly prescribed for streptococcal throat infections, mild-to-moderate skin infections, and infections of the mouth and gums. Although penicillin and amoxicillin are sometimes searched for over the counter, neither is available without a prescription in the United States. A licensed provider must review your health information before this medication can be dispensed.
What Does Penicillin 250mg Treat?
Streptococcal pharyngitis (strep throat)
Mild-to-moderate skin and soft tissue infections
Dental and gum infections (fusospirochetosis)
Mild pneumococcal respiratory tract infections
Prevention of recurrent rheumatic fever
Erysipelas caused by streptococci
Penicillin 250mg Dosage
Strep throat: 250 mg by mouth every 6–8 hours for 10 days
Skin infections: 250–500 mg by mouth every 6–8 hours
Rheumatic fever prevention: 250 mg by mouth twice daily
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Penicillin 250mg Side Effects
Common side effects
- Nausea
- Vomiting
- Diarrhea
- Upset stomach
- Black or hairy tongue
- Oral thrush (white patches in mouth)
- Mild skin rash
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Severe allergic reaction (hives, swelling, trouble breathing)
- Severe or bloody diarrhea (C. difficile colitis)
- Unusual bleeding or bruising
- Seizures (with high doses)
- Severe blistering or peeling skin rash
Warnings & Interactions
Do not use if allergic to penicillin or cephalosporin antibiotics
Serious, sometimes fatal anaphylactic reactions have occurred
May cause C. difficile–associated diarrhea, even weeks after treatment
Complete the full prescribed course, even if symptoms improve
May reduce effectiveness of oral contraceptives
Probenecid increases penicillin blood levels
Tell your provider if you have kidney disease or a history of asthma or allergies
Tell your prescriber about all medications, supplements, and health conditions before starting penicillin 250mg.
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