- Side Effects
- Drug Interactions
- Pregnancy & Breastfeeding
- What Else to Know
Brand Name: Penicillin V
Generic Name: phenoxymethyl penicillin
Drug Class: Penicillins, Natural
What is penicillin V, and what is it used for?
- Penicillin V is effective for treatment of laryngitis, bronchitis, pneumonia, and soft tissue and skin infections caused by susceptible bacteria.
- It also is used for preventing recurrence of rheumatic fever and chorea (a disorder of uncontrolled movement of the body).
- Only mild to moderate infections are treated with oral penicillin V.
- Patients with more severe infections are given penicillin by injection.
What are the side effects of penicillin V?
Common side effects of penicillin V include:
- abdominal pain,
- black hairy tongue,
- rash, and
Patients with a history of allergic reactions to other penicillins should not receive penicillin V. Persons who are allergic to the cephalosporin class of antibiotics, which are related to the penicillins, for example, cefaclor (Ceclor), cephalexin (Keflex), and cefprozil (Cefzil), may or may not be allergic to penicillins.
Serious but rare reactions include:
- hemolytic anemia,
- super infection,
- reduced kidney function,
- severe allergic reactions (anaphylaxis), and
- low platelet or red blood cell count.
Penicillins can alter the normal bacteria in the colon and encourage overgrowth of some bacteria such as Clostridium difficile which causes inflammation of the colon (pseudomembranous colitis). Patients who develop signs of pseudomembranous colitis after starting penicillin (diarrhea, fever, abdominal pain, and possibly shock) should contact their doctor immediately.
What is the dosage for penicillin V?
The usual adult dose of penicillin V is 125 to 500 mg every 6-8 hours.
Which drugs interact with penicillin V?
- Probenecid (Benemid) causes an increase in the level of penicillin in the blood by reducing the elimination of penicillin by the kidneys. In fact, sometimes probenecid is combined with penicillin so that a smaller amount of penicillin results in higher blood levels.
- Penicillin may reduce the effectiveness of BCG live vaccine (used for prevention of tuberculosis) or live typhoid vaccine. Penicillin therapy should be completed before giving live bacterial vaccines.
Pregnancy and breastfeeding
- Penicillin is considered safe during pregnancy.
- Penicillin is excreted in breast milk and may cause diarrhea or allergic responses in nursing infants. If penicillin is used while nursing, the potential benefit of penicillin for the mother should be weighed against the potential risk of side effects in the infant. Penicillin is used for treating infections in infants.
What else should I know about penicillin V?
What preparations of penicillin V (phenoxymethyl penicillin) are available?
Tablets: 250 and 500 mg. Powder: 125 and 250 mg/5 mL.
How should I keep penicillin V (phenoxymethyl penicillin) stored?
- Tablets should be stored between 15 C and 30 C (59 and 86 F).
- After mixing with water, the solution should be kept refrigerated and can be used for up to 14 days after it is reconstituted by the pharmacist.
- It must be shaken before each use and should be kept well-sealed.
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Penicillin V (Veetids and Pen-Vee-K have been discontinued) is an antibiotic prescribed to treat infections from a variety of bacteria that causes infections of the middle ear, tonsils, throat, bronchitis, pneumonia, urinary tract, and gonorrhea. Side effects include rash, itching, abdominal pain, vomiting, nausea, diarrhea. Drug interactions, dosage, and pregnancy and breastfeeding safety should be reviewed prior to taking any medication.
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Colitis refers to inflammation of the inner lining of the colon. Symptoms of the inflammation of the colon lining include diarrhea, pain, and blood in the stool. There are several causes of colitis, including infection, ischemia of the colon, inflammatory bowel disease (Crohn's disease, ulcerative colitis, infectious colitis like C. difficile, or microscopic colitis). Treatment depends on the cause of the colitis.
Strep throat is a bacterial infection of the throat. Signs and symptoms of strep throat include headache, nausea, vomiting, sore throat, and fever. Strep throat symptoms in infants and children are different than in adults. Strep throat is contagious and is generally passed from person to person. Treatment for strep throat symptoms includes home remedies and OTC medication; however, the only cure for strep throat is antibiotics.
Laryngitis is an inflammation of the voice box (vocal cords). The most common cause of acute laryngitis is an infection, which inflames the vocal cords. Symptoms may vary from the degree of laryngitis and age of the person (laryngitis in infants and children is more commonly caused by croup).
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Is Strep Throat Contagious?
Strep throat is caused by group A streptococcus bacteria. Incubation period for strep throat is 1-5 days after exposure. If strep throat is treated with antibiotics, it is no longer contagious after 24 hours; if it is not treated with antibiotics, it is contagious for 2-3 weeks. Symptoms include fever, sore throat, tonsillitis, white spots or patches on the tonsils, and nausea and vomiting. Diagnosis of strep throat is performed through a rapid strep test.
Sore throat (throat pain) usually is described as pain or discomfort in the throat area. A sore throat may be caused by bacterial infections, viral infections, toxins, irritants, trauma, or injury to the throat area. Common symptoms of a sore throat include a fever, cough, runny nose, hoarseness, earaches, sneezing, and body aches. Home remedies for a sore throat include warm soothing liquids and throat lozenges. OTC remedies for a sore throat include OTC pain relievers such as ibuprofen or acetaminophen. Antibiotics may be necessary for some cases of sore throat.
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Is Pneumonia Contagious?
Pneumonia is inflammation of the lung usually caused by bacterial or viral infection (rarely, also by fungi) that causes the air sacs to fill with pus. If inflammation affects both lungs, the infection is termed double pneumonia. If it affects one lung, it is termed single pneumonia. If it affects only a certain lobe of a lung it's termed lobar pneumonia. Most pneumonias are caused by bacteria and viruses, but some pneumonias are caused by inhaling toxic chemicals that damage lung tissue.
Is Laryngitis Contagious?
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Laryngitis Home Remedies
Laryngitis is an inflammation of the larynx. Inflammation of the larynx is most often caused by viral infections. Symptoms include sore throat, cough, problems swallowing, and fever. The voice changes produced by laryngitis may last after the fever and other symptoms of the acute infection have gone away. The best natural home remedy to relieve pain and other symptoms caused by laryngitis includes resting your voice and breathing humidified air often. Turning on the hot water in the bathroom and then sitting in the steam can soothe and relieve laryngitis symptoms. Acetaminophen (Tylenol) and anti-inflammatory drugs (NSAIDs) like ibuprofen (Advil, Aleve) can relieve pain and inflammation caused by laryngitis. Don't give children aspirin to infants, toddlers, children, and teens because of the risk of developing Reye's syndrome, which can be fatal. Home remedies like resting your voice and sitting in humidified air can cure laryngitis. Medications like anti-inflammatory drugs (NSAIDs) like ibuprofen (Advil, Aleve) and acetaminophen (Tylenol) can relieve and soothe pain and symptoms caused by laryngitis.
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What Are the First Warning Signs of Pneumonia?
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What Is the Treatment for Asthmatic Bronchitis?
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