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Formule chimique
C18H20FN3O4
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RX lien
http://www.rxlist.com/cgi/generic/oflox.htm
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FDA fiche
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msds (fiche de securite des materiaux)
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Synthese de reference
I. Hayakava et al., US. 4,382,892 (1983)
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Poids moleculaire
361.368 g/mol
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Point de fusion
250-257 oC
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H2O Solubilite
28,3 mg / ml
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Etat
Solid
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LogP
1.268
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Formes pharmaceutiques
Solution (injection IV); Tablet; gouttes ophtalmiques
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Indication
Pour le traitement des infections (voies respiratoires, les reins, la peau, des tissus mous, infections urinaires), l'urètre et le col de l'utérus gonorrhée.
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Pharmacologie
Ofloxacine est un antibiotique de la famille des quinolones / fluoroquinolones. Ofloxacine est bactéricide et son mode d'action repose sur le blocage de la réplication de l'ADN bactérien en se liant à une enzyme appelée ADN gyrase, qui permet la détorsion nécessaire pour répliquer une double hélice d'ADN en deux. Notamment le médicament a une affinité 100 fois plus élevée pour l'ADN gyrase bactérienne que pour les mammifères. Ofloxacine est un large spectre antibiotique actif contre les bactéries tant Gram-positives et gram-négatives.
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Absorption
La biodisponibilité de l'ofloxacine dans la formulation comprimé est d'environ 98%
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Toxicite
DL50 = 5450 mg / kg (par voie orale chez la souris)
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Information pour les patients
PATIENT INFORMATION
Patients should be advised:
- to drink fluids liberally;
- that mineral supplements, vitamins with iron or minerals, calcium- , aluminum-, or magnesium-based
antacids, sucralfate or Videx�, (Didanosine), chewable/buffered tablets or the pediatric powder for
oral solution should not be taken within the two-hour period before or within the two-hour period after
taking ofloxacin (See Drug Interactions);
- that ofloxacin can be taken without regard to meals;
- that ofloxacin may cause neurologic adverse effects (e. g. , dizziness, lightheadedness) and that
patients should know how they react to ofloxacin before they operate an automobile or machinery or
engage in activities requiring mental alertness and coordination
- to discontinue treatment and inform their physician if they experience pain, inflammation, or rupture
of a tendon, and to rest and refrain from exercise until the diagnosis of tendinitis or tendon rupture
has been confidently excluded;
- that ofloxacin may be associated with hypersensitivity reactions, even following the first dose, to
discontinue the drug at the first sign of a skin rash, hives or other skin reactions, a rapid heartbeat,
difficulty in swallowing or breathing, any swelling suggesting angioedema (e. g. , swelling of the lips,
tongue, face; tightness of the throat, hoarseness), or any other symptom of an allergic reaction
- to avoid excessive sunlight or artificial ultraviolet light while receiving ofloxacin and to discontinue
therapy if phototoxicity (e. g. , skin eruption) occurs;
- that if they are diabetic and are being treated with insulin or an oral hypoglycemic drug, to discontinue
ofloxacin immediately if a hypoglycemic reaction occurs and consult a physician
- that convulsions have been reported in patients taking quinolones, including ofloxacin, and to notify their
physician before taking this drug if there is a history of this condition.
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Organismes affectes
Bactéries entériques et d'autres eubactéries