Metronidazole + Ciprofloxacin Pharmacology

Metronidazole + Ciprofloxacin

About Metronidazole + Ciprofloxacin
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Mechanism of Action of Metronidazole + Ciprofloxacin
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Pharmacokinets of Metronidazole + Ciprofloxacin
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Onset of Action for Metronidazole + Ciprofloxacin
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Duration of Action for Metronidazole + Ciprofloxacin
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Half Life of Metronidazole + Ciprofloxacin
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Side Effects of Metronidazole + Ciprofloxacin
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Contra-indications of Metronidazole + Ciprofloxacin
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Special Precautions while taking Metronidazole + Ciprofloxacin
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Pregnancy Related Information
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Old Age Related Information
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Breast Feeding Related Information
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Children Related Information
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Indications for Metronidazole + Ciprofloxacin
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Interactions for Metronidazole + Ciprofloxacin
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Typical Dosage for Metronidazole + Ciprofloxacin
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Schedule of Metronidazole + Ciprofloxacin
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Storage Requirements for Metronidazole + Ciprofloxacin
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Effects of Missed Dosage of Metronidazole + Ciprofloxacin
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Effects of Overdose of Metronidazole + Ciprofloxacin
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Metronidazole

About Metronidazole
A nitroimidazole antibiotic, Anti-infective, Antiprotozoal,amebicide.
Mechanism of Action of Metronidazole
Metronidazole is nitro imidazoles which have broad spectrum cidal activity against Protozoa and some anaerobic bacteria. Its selective toxicity to anaerobic microbes involves 1. Drug enters the cell by diffusion, 2. Nitro group of drug is reduced by redox proteins present only in anaerobic organisms to reactive nitro radical which exerts cytotoxic action by damaging DNA and other critical biomolecules. 3. DNA helix destabilization & strand breakage has been observed.
Pharmacokinets of Metronidazole
Absorption: Well absorbed orally, Distribution: Widely distributed,
Metabolism: Metabolized in liver by oxidation & glucuronide conjugation, Excretion: Excreted in urine.
Onset of Action for Metronidazole
1 to 2 days
Duration of Action for Metronidazole
8hours.
Half Life of Metronidazole
8 hours.
Side Effects of Metronidazole
1.Anorexia.
2.Metallic taste
3.Nausea
4.Vomiting
5.Diarrhoea
6.Headache
7.Looseness of stool.
8.Peripheral neuropathy &CNS effects.
9.Mutagenesis.
10.Radiosensitisation.
11.Transient leucopenia
12.Dry mouth
13.Abdominal distress
14.Dizziness
15.Vertigo
16.Thrombophlebitis at site of injection
17.Ototoxicity
Contra-indications of Metronidazole
1.Hypersensitivity to the drug
2.Blood dyscrasias
3.CNS disorders
Special Precautions while taking Metronidazole
1.Renal impairment
2.Hepatic impairment
3.Alcoholic cirrhosis
4.Use cautiously along with other hepatotoxic drugs & In visual field changes
Pregnancy Related Information
Use with caution
First trimester:contra indicated
Old Age Related Information
May be used.
Breast Feeding Related Information
Contraindicated
Children Related Information
Use with caution
Neonates: Contraindicated
Indications for Metronidazole
1.Amoebiasis
2.Giardiasis
3.Trichomonas vaginitis
4.Pseudo membranous enterocolitis
5.Anaerobic bacterial infections after surgery, Brain abscess, & Endocarditis
6.Helicobacter pylori infections
7.Ulcerative gingivitis
Interactions for Metronidazole
Warfarin & other coumarin anticoagulants: Potentiates the anticoagulant effect resulting in increased prothrombin time.
Alcohol: A disulfiram-like reaction. Abdominal cramps, nausea, vomiting, headache & flushing.
Disulfiram: Acute psychotic reaction or confusional state.
Phenobarbital & Phenytoin: Increased metabolism of metronidazole resulting in decreased efficacy.
Lithium: Increased lithium levels and toxicity.
Flurouracil: Increased toxicity of flurouracil.
Lab tests: May interfere with chemical analysis for AST,SGOT, ALT, SGPT, LDH, triglycerides and hexokinase glucose. Zero values may occur.
Typical Dosage for Metronidazole
Adult
Amoebiasis:400 to 800 mg 8hourly for 5 to 10days depending up on the severity of infection
In severe infections and liver abscess: 1gm as slow I.V. infusion followed by 0.5 gm twice daily till oral therapy is started
Giardiasis:200mg 8hourly for 1week or 2gm/day for 3days or I.V.500mg thrice daily
Trichomonas vaginitis: 400mg 8 hourly for a week or 2gm once daily for a week.
Male partner should be concurrently treated with the drug
Pseudo membranous enterocolitis:800 mg 8hourly
Anaerobic bacterial infections after surgery, Brain abscess, & Endocarditis:400 to 800 mg 8hourly
In severe cases: 15mg/kg I.V. infusion for 1hour followed by 7.5mg/kg 4 times daily till oral therapy is substituted
Helicobacter pylori infections:400mg 8hourly along with amoxicillin/clarithromycin and a proton pump inhibitor
Ulcerative gingivitis:200 to 800mg 8hourly
Children
Amoebiasis: 30 to 50mg/kg/day for 5to10 days.
Giardiasis:10 to 15mg/kg/day thrice daily
Children (below 12years): 7.5mg/kg I.V.
Schedule of Metronidazole
H
Storage Requirements for Metronidazole
Store in a well closed container in a cool dark place. Keep out of the reach of children.
Effects of Missed Dosage of Metronidazole
Take the missed dose as soon as noticed and if it is the time for next dose then skip the missed dose. Continue the regular schedule. Do not double the dose.
Effects of Overdose of Metronidazole
Treatment is supportive & symptomatic. Drug is removed by induced emesis, gastric lavage, and administration of activated charcoal & use of cathartics. For controlling seizures diazepam & phenytoin may be used.

Ciprofloxacin

About Ciprofloxacin
It is a broad spectrum fluoroquinolone with activity against Pseudomonas aeruginosa.
EYE DROPS: It is a fluroquinolone antibacterial having broad spectrum of activity.
Mechanism of Action of Ciprofloxacin
Ciprofloxacin is a bacteriostatic at low concentration and bactericidal at high concentration. It act by inhibiting the enzyme DNA gyrase (Topoisomerase 2) and Topoisomerase 4.DNA gyrase helps in the formation of a highly condensed three dimensional structure of the DNA by its nicking and closing activity and also by introducing negative supercoil in to the DNA double helix. Ciprofloxacin inhibits DNA gyrase which results in abnormal linkage between opened DNA and gyrase and negative supercoiling is also impaired. This will inhibits transcription of DNA in to RNA and subsequent protein synthesis.
Pharmacokinets of Ciprofloxacin
Absorption: They are adequately absorbed after oral administration. Distribution: It is distributed widely in the body. Metabolism: It undergoes hepatic metabolism. Excretion: Drug is excreted mainly through urine.

Onset of Action for Ciprofloxacin
Within 1hr.
Duration of Action for Ciprofloxacin
8-12 hours.
Half Life of Ciprofloxacin
3 - 5 hour
Side Effects of Ciprofloxacin
1.Nausea
2.Vomiting
3.Diarrhoea
4.Abdominal discomfort
5.Restlessness
6.Dizziness
7.Drowsiness
8.Arthralgia
9.Rash
10.Confusion
11.Insomnia
12.Anorexia
13.Bad taste
14.Headache
15.Photosensitivity

Contra-indications of Ciprofloxacin
Hypersensitivity to Ciprofloxacin and other Fluoroquinolones
Special Precautions while taking Ciprofloxacin
1.Hepatic impairment
2.Renal impairment
3.Epilepsy
4.Dehydration
5.Caution while driving the vehicle or operating machine or involved in any hazardous activities.
Pregnancy Related Information
Use with caution.
Old Age Related Information
Use with caution.
Breast Feeding Related Information
Contraindicated
Children Related Information
Contraindicated
NEONATES: contraindicated
Indications for Ciprofloxacin
1.Urinary tract infection
2.Respiratory tract infection
3.Bone and joint infections,
4.Infectious diarrhoea
5.Gonorrhoea
6.ENT infections
7.Skin and soft tissue infections
8.Typhoid fever
9.Intra-abdominal infections
10.Prostatitis
11. Sinusitis
12.Chancroid
13.Gynaecological infections
14.Tularemia
Interactions for Ciprofloxacin
Antacids (aluminium/magnesium hydroxide), Iron salts, Zinc salts.: Absorption of ciprofloxacin is decreased.
Antineoplastic drugs: Decrease serum levels of ciprofloxacin.
Caffeine: Enhanced efficacy of caffeine.
Oral anti-coagulants: Enhanced efficacy of anti-coagulants.
Cyclosporine: Nephrotoxicity increased by ciprofloxacin.
Theophylline: Increased plasma levels of theophylline resulting in toxicity.
NSAIDs: CNS excitation may occur.
Rifampicin: Decreases serum concenteration of ciprofloxacin.
Chloramphenicol: Antagonises effects of ciprofloxacin.
Typical Dosage for Ciprofloxacin
Adults:
Dose is determined on the basis of severity of the infection, type of infecting organism, age, weight and renal function of the patient.
UTI: 0.5 - 1 g / day in 2 divided doses.
Respiratory tract infection, Bone and joint infections, Infectious diarrhoea, ENT infections, .Skin and soft tissue infections, Enteric fever: 1 - 1.5 g / day in 2 divided doses
Typhoid fever, Intra-abdominal infections, Gynaecological infection: 1 g / day in 2 divided doses
Uncomplicated gonorrhea: 250 mg / day
Schedule of Ciprofloxacin
H
Storage Requirements for Ciprofloxacin
Store at 15 - 30 degree C in a tightly closed container.
Effects of Missed Dosage of Ciprofloxacin
Take the missed dose as soon as noticed and if it is the time for next dose then skip the missed dose.
Effects of Overdose of Ciprofloxacin
Give supportive measures and symptomatic treatment. Induce emesis or gastric lavage has to be done. Dialysis can be done if necessary.

Home Delivery for Metronidazole + Ciprofloxacin in Your City

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