Penicillin V
(pen i SILL in)A-Cillin, Beepen-VK, Ledercillin VK, PC Pen VK, Pen-V, Pen-Vee K, V-Cillin K, Veetids
What is the most important information I should know about penicillin V?
Take all of the penicillin V that has been prescribed for you even if you begin to feel better. Your symptoms may begin to improve before the infection is completely treated.
Penicillin V may decrease the effectiveness of birth control pills. Use a second method of birth control while taking penicillin V to protect against pregnancy.
What is penicillin V?
Penicillin V is an antibiotic in the class of drugs called penicillins. It fights bacteria in your body.
Penicillin V is used to treat many different types of infections, such as tonsillitis, pneumonia, strep throat, bronchitis, and infections of the skin.
Penicillin V may also be used for purposes other than those listed in this medication guide.
Who should not take penicillin V?
If you have ever had an allergic reaction to another penicillin or to a cephalosporin, do not take penicillin V unless your doctor is aware of your allergy and monitors your therapy.
Before taking this medication, tell your doctor if you have kidney disease, stomach or intestinal disease, or infectious mononucleosis. You may not be able to take penicillin V because of an increased risk of side effects.
If you are a diabetic, some glucose urine tests may give false positive results while you are taking penicillin V.
Penicillin V is in the FDA pregnancy category B. This means that it is unlikely to harm an unborn baby. Do not, however, take penicillin V without first talking to your doctor if you are pregnant.
It is not known whether penicillin V passes into breast milk. Do not take this medication without first talking to your doctor if you are breast-feeding a baby.
How should I take penicillin V?
Take penicillin V exactly as directed by your doctor. If you do not understand these instructions, ask your pharmacist, nurse, or doctor to explain them to you.
Take each dose with a full glass of water.
Penicillin V can be taken with or without food. Do not drink fruit juice or carbonated beverages (soda) with your dose, however. These beverages will decrease the effectiveness of the drug.
Penicillin V should be taken at evenly spaced intervals throughout the day and night to keep the level in your blood high enough to treat the infection.
Shake the liquid form of penicillin V well before measuring a dose. To ensure that you get a correct dose, measure the suspension with a dose-measuring spoon or cup, not a regular tablespoon. If you do not have a dose-measuring device, ask your pharmacist where you can get one.
Take all of the penicillin V that has been prescribed for you even if you begin to feel better. Your symptoms may start to improve before the infection is completely treated.
Store the tablets and capsules at room temperature and store the suspension in the refrigerator for longer use. The suspension is good for 14 days if it is stored in the refrigerator. Throw away any unused liquid after this amount of time.
What happens if I miss a dose?
Take the missed dose as soon as you remember. However, if it is almost time for your next dose, skip the dose you missed and take only your next regularly scheduled dose. Do not take a double dose of this medication unless otherwise directed by your doctor.
If you have only missed one dose, you can take the rest of your scheduled doses for the day at evenly spaced intervals.
What happens if I overdose?
Seek emergency medical attention.
Symptoms of an penicillin V overdose include muscle spasms or weakness, pain or twitching, pain in the fingers or toes, loss of feeling in the fingers or toes, seizures, confusion, coma, and agitation.
What should I avoid while taking penicillin V?
Alcohol may irritate your stomach if taken with penicillin V, so use it with moderation.
What are the possible side effects of penicillin V?
If you experience any of the following serious side effects, stop taking penicillin V and seek emergency medical attention:
an allergic reaction (shortness of breath; closing of your throat; hives; swelling of your lips, face, or tongue; rash; or fainting);
seizures;
severe watery diarrhea and abdominal cramps; or
unusual bleeding or bruising.
Other, less serious side effects may be more likely to occur. Continue to take penicillin V and talk to your doctor if you experience
mild nausea, vomiting, diarrhea, or abdominal pain;
white patches on the tongue (thrush/yeast infection);
itching or discharge of the vagina (vaginal yeast infection); or
black, "hairy" tongue or sore mouth or tongue.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
What other drugs will affect penicillin V?
Some drugs may decrease the effects of penicillin V and prevent it from properly treating your infection. Before taking penicillin V, tell your doctor if you are taking any of the following drugs:
cholestyramine (Questran) or colestipol (Colestid); or
another antibiotic (for the same or for a different infection) such as erythromycin (Ery-Tab, E-Mycin, E.E.S., others), tetracycline (Sumycin, others), minocycline (Minocin), doxycycline (Doryx, Vibramycin, others), or any other.
Penicillin V may decrease the effectiveness of birth control pills. Use a second method of birth control while taking penicillin V to protect against pregnancy.
Penicillin V increases the effects of methotrexate, and you may need a dose adjustment during therapy with penicillin V.
Penicillin V also increases the side effects of allopurinol (Zyloprim) and may cause a rash.
Probenecid (Benemid) increases the effects of penicillin V. These drugs may be used together for this purpose; however, be sure your doctor is aware if you are taking probenecid. You may need a lower dose of penicillin.
Drugs other than those listed here may also interact with penicillin V. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.
Where can I get more information?
Your pharmacist has additional information about penicillin V written for health professionals that you may read.
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.
Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist. Click here for more information on Penicillin
Copyright 1996-2004 Cerner Multum, Inc. Version: 3.04. Revision Date: 1/23/04.
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