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|Penicillin V |
Drugs search, click the first letter of a drug name: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 Home Penicillin V( Phenoxymethyl Penicillin, Penicillin V Potassium ) Pronouncation: (pen-ih-SILL-in V)Class: Natural penicillin Trade Names: Trade Names: Trade Names: Trade Names: Trade Names: Nadopen-V (Canada) Novo-Pen-VK (Canada) Nu-Pen-VK (Canada) Pen-Vee (Canada) PVF K (Canada) Mechanism of ActionPharmacologyInhibits mucopeptide synthesis of bacterial cell wall. PharmacokineticsAbsorptionOral absorption is 60% to 73%. T max is 0.5 to 1 hr. C max is 2 to 3 mcg/mL. DistributionWidely distributed to most tissues and body fluids; distribution into CSF is low with noninflamed meninges. Protein binding is 80%. Vd is 0.5 L/kg. Crosses the placenta and distributes into breast milk. MetabolismHepatic biotransformation is 55%. EliminationMainly renal (20% to 40% as unchanged). T 1/2 is 0.5 to 1 hr. Special PopulationsRenal Function ImpairmentFor Ccr less than 10 mL/min, t 1/2 increased to 4.1 hr. Indications and UsageTreatment of upper respiratory tract infections; treatment of pneumococcal, streptococci, and staphylococcal infections and fusospirochetosis (Vincent"s infection) of oropharynx caused by susceptible microorganisms. Unlabeled UsesProphylactic treatment of sickle cell anemia in children; treatment of anaerobic infections; treatment of Lyme disease ( Borrelia burgdorferi ). ContraindicationsHypersensitivity to penicillins. Do not treat severe pneumonia, empyema, bacteremia, pericarditis, meningitis, and purulent or septic arthritis with oral penicillin V during acute stage. Dosage and AdministrationAdults and children over 12 yrPO 125 to 500 mg qid. General AdviceAdminister without regard to meals. Administer with food if GI upset occurs. Storage/StabilityReconstituted oral solution is stable for 14 days when refrigerated (36° to 46°F) Drug InteractionsBeta-blockersMay potentiate anaphylactic reactions of penicillin. Contraceptives, oralMay reduce efficacy of oral contraceptives. ErythromycinMay cause synergism or antagonism to develop. TetracyclinesMay impair bactericidal effects of penicillin V. Laboratory Test InteractionsAntiglobulin ( Coombs" ) testDrug may cause false-positive results. Urine glucose testDrug may cause false-positive results with copper sulfate tests ( Benedict"s test, Fehling"s test or Clinitest tablets); enzyme-based tests (eg, Clinistix , Tes-tape ) are not affected. Urine protein determinationsDrug may cause false-positive reactions with sulfosalicylic acid and boiling test, acetic acid test, biuret reaction and nitric acid test; bromphenol blue test ( Multi-Stix ) is not affected. Adverse ReactionsCNSDizziness; fatigue; insomnia; reversible hyperactivity; neurotoxicity (eg, lethargy, neuromuscular irritability, hallucinations, convulsions, seizures). EENTItchy eyes; furry tongue; black “hairy” tongue; stomatitis; sore mouth or tongue. GIGlossitis; gastritis; dry mouth; nausea; vomiting; abdominal pain or cramp; epigastric distress; diarrhea or bloody diarrhea; rectal bleeding; flatulence; enterocolitis; pseudomembranous colitis. GenitourinaryInterstitial nephritis (eg, oliguria, proteinuria, hematuria, hyaline casts, pyuria); nephropathy; increased BUN and creatinine. HematologicDecreased hemoglobin, hematocrit, RBC, WBC, neutrophils, lymphocytes, platelets; increased lymphocytes, monocytes, basophils, eosinophils, and platelets. MetabolicElevated serum alkaline phosphatase; hypernatremia; hypokalemia; albumin, total proteins and uric acid. MiscellaneousHypersensitivity reactions (eg, urticaria, angioneurotic edema, laryngospasm, laryngeal edema, bronchospasm, hypotension, vascular collapse, death, maculopapular to exfoliative dermatitis, vesicular eruptions, erythema multiforme, serum sickness, skin rashes, prostration); vaginitis; hyperthermia. PrecautionsPregnancyCategory B . LactationSmall amount excreted in breast milk. May cause diarrhea, candidiasis, or allergic response in nursing infant. HypersensitivityReactions range from mild to life threatening. Administer drug with caution to cephalosporin-sensitive patients because of possible crossreactivity. Renal FunctionUse drug with caution; dosage adjustment may be necessary. SuperinfectionMay result in bacterial or fungal overgrowth of nonsusceptible organisms. Pseudomembranous colitisMay occur because of overgrowth of clostridia. Streptococcal infectionsTherapy must be minimum of 10 days. OverdosageSymptomsNeuromuscular hyperexcitability, agitation, confusion, asterixis, hallucinations, stupor, coma, multifocal myoclonus, encephalopathy, hyperkalemia. Patient Information
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