
Ciprofloxacin
Bactericidal by inhibition of DNA
supercoiling in the bacteria. One of the most active fluroquinolones,
it’s spectrum includes gram – negative aerobic bacteria
including Enterobacteriaceae, Haemophilus, Neisseriae and Pseudomonas
aeruginosa. It is also active in vitro, against many Gram positive
aerobic pathogens including penicilinase-producing, and methicillin-resistant
staphylococci.
Indications &
Dosage:
Oral – UTI:250-500
mg b.i.d.
Prostatitis and complicated UTI: 500 mg 12 hourly
Lower Respiratory & Tract Infections : 250-500 mg , 12 hourly.Sometimes
750 mg 12 hourly may be given.
Skin & soft Tissue, Bone and Joint Infections: 500-750 mg 12
hourly.
Surgical Prophyaxis – 750mg 60-90 mins before procedure.
IV : UTI: 100 mg
by slow infusion. Gonorrhoea : 100 mg single dose.
Renal Impairment : Dose changes according to creatinine clearance.
Duration of treatment: Generally 5-7 days. Continued for atleast
3 days after symptoms have subsided.
Composition:
Each Tablet Contains
(a) Ciprofloxacin B.P. 250mg.
(b) Ciprofloxacin B.P. 500mg.
Safety Alert:
CL: Children below
12 years and adolescents except where benefit clear exceeds risk.
Pregnancy, Lactation, Risk.
SP: Epilepsy, severe renal dysfunction, history
of convulsive disorders.
INT POT-HAZ : Decreased ciprofloxacin absorption
when co=administered with magnesium-aluminium antacids.
ADR POT-LT: Anaphylactoid reaction. Others –
dizziness, convulsions, headache, confusion.
INT- FOOD: Milk & food reduce rate not extent
of absorption. Not clinically signifant.
Cloxacillin
Cloxacillin is resistant to degradation
by penicillinases. It is particularly useful against penicillinase–
producing staphytococci. Highly active against staph.aureus,strep.pyogenes,strep.viridans
and trep.pneumoniae.
Indications &
Dosage:
Oral – Skin
and soft tissue infections, burns mastitis, osteomyletis, Tonsular
Abscess, Pneumonia – 500 mg 6 hrly may be doubled in severe
infections. Children 2-10 years Half adult dose.Under 2 years:quarter
adult dose. A daily dose of 18 g has been used for acute haematogenous
osteitis and Staph infections of CNS.
IM/IV – Severe infections
– IM 250-500mg Children – 25-100mg/kg in divided doses.
Composition:
Each Capsule Contains
(a) Cloxacillin B.P. 250mg.
(b) Cloxacillin B.P. 500mg.
Composition(Syrup
30/60ml):
Each 5ml Syrup Contains
Cloxacillin B.P. 125mg.
Safety Alert:
CL:Hypersens to
penicillins, jaundice in neonates.
SP: Hepatic disease. Pregnancy
& Lactation.
INT POT-HAZ: Loss of potency of
cloxacillin in solution reported with erythromycin, gentaicin, kanamycin,
colistin sulphomthate sodium, oxytetracycline, chlorpromazine, Vitamin
C and polymyxin B sulphate. Cloxacillin should not be added to intravenous
lipids, blood products, protein hydrolysates or other proteinaceous
fluids(degree of serum protein building for cloxacillin is 94%).Chloramphenicol
and tetracycline antagonize bactericidal effect of penicillins.
Others – Co-administration of protein binding of cloxacillin
thereby increasing free serum levels.
ADR POT-LT: Rare Hypersensivity.
Others – Neutropenia, agranulocytosis, neurotoxicity, rash,
increased incidence of phlebitis with I.V. administration.
LAB INT: Interferes with urinary
test for Bence-Jones proteins.
INT FOOD: Delayed absorption, Lower
plasma levels.

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