Brand Names: PC Pen VK, Pen-V

Generic Name: penicillin V (Pronunciation: pen i SILL in)

• What is penicillin V (PC Pen VK, Pen-V)?
• What are the possible side effects of penicillin V (PC Pen VK, Pen-V)?
• What is the most important information I should know about penicillin V (PC Pen VK, Pen-V)?
• What should I discuss with my healthcare provider before taking penicillin V (PC Pen VK, Pen-V)?
• How should I take penicillin V (PC Pen VK, Pen-V)?
• What happens if I miss a dose (PC Pen VK, Pen-V)?
• What happens if I overdose (PC Pen VK, Pen-V)?
• What should I avoid while taking penicillin V (PC Pen VK, Pen-V)?
• What other drugs will affect penicillin V (PC Pen VK, Pen-V)?
• Where can I get more information?

What is penicillin V (PC Pen VK, Pen-V)?

Penicillin V is an antibiotic in the penicillin group of drugs. It fights bacteria in your body.

Penicillin V is used to treat many different types of infections caused by bacteria, such as ear infections,.

Penicillin V may also be used for other purposes not listed in this medication guide.

Penicillin VK 250 mg-GG

round, white, imprinted with PVK 250, GG 949

Penicillin VK 250 mg-MAJ

oval, white, imprinted with 16, BIOCRAFT

Penicillin VK 250 mg-TEV

oblong, white, imprinted with 93, 5194

Penicillin VK 500 mg-TEV

oval, white, imprinted with 93, 5195

Penicillin VK 500 mg-UDL

round, white, imprinted with BL, 17

Veetids 250 mg

round, white, imprinted with BL V1

Veetids 500 mg

round, white, imprinted with BL V2

What are the possible side effects of penicillin V (PC Pen VK, Pen-V)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have any of these serious side effects:

• diarrhea that is watery or bloody;
• fever, chills, body aches, flu symptoms;
• easy bruising or bleeding, unusual weakness;
• urinating less than usual or not at all;
• severe skin rash, itching, or peeling;
• agitation, confusion, unusual thoughts or behavior; or
• seizure (black-out or convulsions).

Less serious side effects are more likely to occur, such as:

• nausea, vomiting, stomach pain;
• vaginal itching or discharge;
• headache;
• swollen, black, or "hairy" tongue; or
• thrush (white patches or inside your mouth or throat).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about penicillin V (PC Pen VK, Pen-V)?

Do not use this medication if you are allergic to penicillin V or to any other penicillin antibiotic, such as amoxicillin (Amoxil), ampicillin (Omnipen, Principen), carbenicillin (Geocillin), dicloxacillin (Dycill, Dynapen), or oxacillin (Bactocill).

Before using penicillin V, tell your doctor if you are allergic to cephalosporins such as Ceclor, Ceftin, Duricef, Keflex, and others, or if you have asthma, kidney disease, or a history of any type of allergy.

Penicillin V can make birth control pills less effective, which may result in pregnancy. Before taking penicillin V, tell your doctor if you use birth control pills.

Take this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Penicillin V will not treat a viral infection such as the common cold or flu.

Do not give this medication to another person, even if they have the same symptoms you do.

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or has blood in it, call your doctor. Do not use any medicine to stop the diarrhea unless your doctor has told you to.

What should I discuss with my healthcare provider before taking penicillin V (PC Pen VK, Pen-V)?

Do not use this medication if you are allergic to penicillin V or to any other penicillin antibiotic, such as:

• amoxicillin (Amoxil, Amoxicot, Biomox, Dispermox, Trimox);
• ampicillin (Omnipen, Principen);
• carbenicillin (Geocillin);
• dicloxacillin (Dycill, Dynapen); or
• oxacillin (Bactocill).

Before using penicillin V, tell your doctor if you are allergic to any drugs (especially cephalosporins such as Ceclor, Ceftin, Duricef, Keflex, and others), or if you have:

• asthma;
• kidney disease;
• a bleeding or blood clotting disorder;
• a history of diarrhea caused by taking antibiotics; or
• a history of any type of allergy.

If you have any of these conditions, you may need a dose adjustment or special tests to safely take penicillin V.

FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

Penicillin V can make birth control pills less effective, which may result in pregnancy. Before taking penicillin V, tell your doctor if you use birth control pills.

Penicillin V can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I take penicillin V (PC Pen VK, Pen-V)?

Take this medication exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the directions on your prescription label.

You may take penicillin V with or without food.

To be sure this medication is helping your condition, your blood will need to be tested on a regular basis. Your kidney or liver function may also need to be tested. Do not miss any scheduled visits to your doctor.

Shake the oral suspension (liquid) well just before you measure a dose. To be sure you get the correct dose, measure the liquid with a marked measuring spoon or medicine cup, not with a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.

Take this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Penicillin V will not treat a viral infection such as the common cold or flu.

Do not give penicillin V to another person, even if they have the same symptoms you do.

This medication can cause you to have unusual results with certain medical tests. Tell any doctor who treats you that you are using penicillin V.

Store penicillin V tablets at room temperature away from moisture, heat, and light.

Store liquid penicillin V in a refrigerator but do not allow it to freeze. Throw away any liquid penicillin that has not been used within 14 days after it was mixed at the pharmacy.

What happens if I miss a dose (PC Pen VK, Pen-V)?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.

What happens if I overdose (PC Pen VK, Pen-V)?

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms may include confusion, behavior changes, a severe skin rash, urinating less than usual, or seizure (black-out or convulsions).

What should I avoid while taking penicillin V (PC Pen VK, Pen-V)?

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or has blood in it, call your doctor. Do not use any medicine to stop the diarrhea unless your doctor has told you to.

What other drugs will affect penicillin V (PC Pen VK, Pen-V)?

Before taking penicillin V, tell your doctor if you are using any of the following drugs:

• methotrexate (Rheumatrex, Trexall); or
• probenecid (Benemid).

This list is not complete and there may be other drugs that can interact with penicillin V. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about penicillin V.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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Last Updated: April 1, 2009