Want To Know About Fluoroquinolones

 All About Fluoroquinilones

Do you know about Fluoroquinolones,if not,come to this blog and update yourself to this broad spectrum group of antibiotic.

The basic formula of this group of medicine is Nalidixic acid which is quinilone.Interstingly Flourine was added to quinilones and a new group of medinces was formed known as Fluoroquinilones.

From its 1st medicines to improved formula,this group is divided into 3 generations

1st Generation

Nalidixic acid

( Norfloxacin)

It is moderately effective against gram - ve bacteria. due to its less effective distribution in body,its usage is limited to uncomplicated urinary tract and prostate infections.

2nd Generation

Ciprofloxacin

Ofloxacin

These are active against more numbers of gram - ve bacteria,gonococcus,mycobacteria,salmonella and less number of gram+ ve cocci.

Uses

These drugs are used in

Travelers diarrhea,Typhoid fever,cystic fibrosis ,Resistant Tuberclosis,Anthrerax,in combination with other drugs like Penicillin and seflosporines and also used as alternatives og Aminoglycosides

3rd Generation 

Levofloxacin

Moxifloxacin

Gemifloxacin

These are active against gram + ve rods,gram + ve cocci,gram+vebascilli,streptococcal pneumonia ,chlamydophilla pneumonia.

Moxifloxacin and gemifloxacin are also effective against Anaerobic bacteria

Uses

Skin infections,Acute sinusitis,All types of pneumonia,Acute exacebation of chronic bronchitis,sexually transmitted infections,mixed infections,prostatitis and intra abdominal infections

Absorption

Oral administeration is common,their bioavalibilty is good,now ciprofloxacin is also available in injectable form.

Excretion

These broad sectrum antbiotics are mostl excreted through urinary tract except moxifloxacin which is also eliminated through liver

Side effects|unwanted effects

: Nausia,vomiting ,diarrhea

: Headache,dizziness

: Rarely epileptic attacks in asthamitic patients on theophyllin therapy

: Spontaneuos bleeding in patientson anticoagulant therapy

: Phototoxicity

: Tendinitis in elderly patients

: Pseudomembaranous collitis is very rare but very serious side effect may lead to death

Contraindications

:  pregnancy

: Children under 18 years old

: feeding mothers

: Patients on antiarrythmatic drugs

: patients on theophyline therapy