出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/05/23 01:27:29」(JST)
Systematic (IUPAC) name | |
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(2S,5R,6R)-3,3-dimethyl-7-oxo-6-(2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid | |
Clinical data | |
Trade names | BenPen |
AHFS/Drugs.com | Micromedex Detailed Consumer Information |
MedlinePlus | a685013 |
Pregnancy
category |
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Legal status
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Routes of
administration |
Intravenous, Intramuscular, formerly used orally |
Pharmacokinetic data | |
Protein binding | 60 % |
Metabolism | hepatic |
Half-life | 30 min |
Excretion | renal |
Identifiers | |
CAS Registry Number
|
61-33-6 Y (free acid) 69-57-8 (sodium salt) |
ATC code
|
J01CE01 S01AA14 QJ51CE01 |
PubChem | CID 5904 |
DrugBank | DB01053 Y |
ChemSpider | 5693 Y |
UNII | Q42T66VG0C Y |
KEGG | D02336 N |
ChEBI | CHEBI:18208 N |
ChEMBL | CHEMBL29 N |
Chemical data | |
Formula | C16H18N2O4S |
Molecular mass
|
334.4 g/mol |
SMILES
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InChI
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N (what is this?) (verify) |
Benzylpenicillin (INN, AAN, BAN), commonly known as penicillin G, (USAN) is a narrow spectrum penicillin antibiotic that is given intravenously or intramuscularly as a treatment for syphilis, meningitis, endocarditis, pneumonia, lung abscesses and septicaemia in children.[1] Penicillin G is typically given by injection parenterally, bypassing the intestines, because it is unstable in the highly acidic stomach. Because the drug is given parenterally, higher tissue concentrations of penicillin G can be achieved than is possible with phenoxymethylpenicillin. These higher concentrations translate to increased antibacterial activity.
It is on the World Health Organization's List of Essential Medicines, a list of the most important medications needed in a basic health system.[2]
Specific indications for benzylpenicillin include:[3]
As an antibiotic, Penicillin G is noted to possess effectiveness mainly against Gram-positive organisms. Some Gram-negative organisms such as Neisseria gonorrhoeae and Neisseria meningitidis are also reported to be susceptible to Penicillin G.[4]
This section does not cite any references or sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. (April 2011) |
Adverse effects can include hypersensitivity reactions including urticaria, fever, joint pains, rashes, angioedema, anaphylaxis, serum sickness-like reaction. Rarely CNS toxicity including convulsions (especially with high doses or in severe renal impairment), interstitial nephritis, haemolytic anaemia, leucopenia, thrombocytopenia, and coagulation disorders. Also reported diarrhoea (including antibiotic-associated colitis).
Benzylpenicillin serum concentrations can be monitored either by traditional microbiological assay or by more modern chromatographic techniques. Such measurements can be useful to avoid central nervous system toxicity in any patient receiving large doses of the drug on a chronic basis, but they are especially relevant to patients with renal failure, who may accumulate the drug due to reduced urinary excretion rates.[5][6]
This section requires expansion. (March 2010) |
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PCGのMIC値(μg/ml) | ||
ペニシリン感受性肺炎球菌 | PSSP | ≦0.06 |
ペニシリン中等度耐性肺炎球菌 | PISP | 0.12-1.0 |
ペニシリン耐性肺炎球菌 | PRSP | ≧2.0 |
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