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- Pharmacology For Miconazole + Gentamicin
Miconazole + Gentamicin Pharmacology
Miconazole + Gentamicin
About Miconazole + GentamicinN/AMechanism of Action of Miconazole + GentamicinN/APharmacokinets of Miconazole + GentamicinN/AOnset of Action for Miconazole + GentamicinN/ADuration of Action for Miconazole + GentamicinN/AHalf Life of Miconazole + GentamicinN/ASide Effects of Miconazole + GentamicinN/AContra-indications of Miconazole + GentamicinN/ASpecial Precautions while taking Miconazole + GentamicinN/APregnancy Related InformationN/AOld Age Related InformationN/ABreast Feeding Related InformationN/AChildren Related InformationN/AIndications for Miconazole + GentamicinN/AInteractions for Miconazole + GentamicinN/ATypical Dosage for Miconazole + GentamicinN/ASchedule of Miconazole + GentamicinN/AStorage Requirements for Miconazole + GentamicinN/AEffects of Missed Dosage of Miconazole + GentamicinN/AEffects of Overdose of Miconazole + GentamicinN/AMiconazole
About MiconazoleAn imidazole derivative, Broad spectrum Antifungal.Mechanism of Action of MiconazoleMiconazole is fungicidal or fungistatic depending on the drug concentrations. I t inhibits the conversion of Lanosterol to 14 demethyl Lanosterol by inhibiting the cytochromeP450 enzyme 14 alpha demethylase and impair ergosterol synthesisPharmacokinets of MiconazoleAbsorption: Oral absorption of Miconazole is poor. Distribution: It is distributed in the body in protein bound form Metabolism: It undergoes metabolism in the liver. Excretion: It is excreted in urine and faeces.Onset of Action for MiconazoleN/ADuration of Action for MiconazoleN/AHalf Life of Miconazole1 daySide Effects of Miconazole1.Vulvovaginal burning
2.Burning
3.Irritation
4.Pruritis
5.Maceration
6.Dermatitis Contra-indications of Miconazole1.Hypersensitivity to Miconazole and other Azole antifungalsSpecial Precautions while taking Miconazole1.Hepatic dysfunctionPregnancy Related InformationContraindicatedOld Age Related InformationUse with cautionBreast Feeding Related InformationContraindicatedChildren Related InformationUse with caution
NEONATES: contraindicated
Indications for Miconazole1.Tinea versicolor
2.Vulvovaginal candidiasis
3.Tinea pedis
4.Tinea corporis
5.Tinea cruris
6.Otomycosis
7.Onychomycosis
8.Oral candidiasis
9.Intestinal candidiasis
10.Diaper dermatitisInteractions for MiconazoleBenzoyl peroxide: Antibacterial synergism. Typical Dosage for MiconazoleAdult: Topical use:
Cutaneous infections: Apply the cream twice daily on the affected part for about 1 month
Tinea versicolor: Apply the cream once daily on the affected part
Vaginal use: Insert 300 mg suppository at bed time for 3 days or Insert 100 mg suppository at bed time for 7 days
CHILDREN:
Topical use:
Cutaneous infections: Apply the cream twice daily on the affected part for about 1 month
Tinea vericolor: Apply the cream once daily on the affected part
Schedule of MiconazoleHStorage Requirements for MiconazoleThe drug should be stored at 15 - 30 degree C.Effects of Missed Dosage of MiconazoleTake 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 MiconazoleGive supportive measures and treatment.
Gentamicin
About GentamicinAminoglycoside antibiotic.Mechanism of Action of GentamicinGentamicin exerts its bactericidal action against gram negative organisms & some of gram positive organisms by inhibiting bacterial protein synthesis. The process involves 1. Penetration of bacterial cell membrane & binding directly to the bacterial ribosome, 2. Misleading of m-RNA codon by bacterial ribosome, 3. Formation of peptide chains with wrong amino acid sequence which gets incorporated into bacterial cell membrane and alters its permeability, 4. Bacterial cell lysis. Some bacterial strains resistant to other amino glycosides are sensitive to Gentamicin.
Pharmacokinets of GentamicinAbsorption: Poorly absorbed orally
Distribution: Distributed extracellularly. CSF penetration & intraocular penetration poor.
Metabolism: Not metabolized
Excretion: Excreted mainly through urine.
Onset of Action for Gentamicin1 hour
Duration of Action for Gentamicin8 hoursHalf Life of Gentamicin2 hoursSide Effects of Gentamicin1. Vestibular damage & Ototoxicity
2. Allergic manifestations
3. Nephrotoxicity
4. Dizziness
5. Nausea
6. Vomiting
7. Seizures
Contra-indications of Gentamicin1. Hypersensitive to the drug or other amino glycosides
2. Along with chloramphenicol or tetracycline
3. Renal impairment
4. Labyrinthine disorders
Special Precautions while taking Gentamicin1. Renal impairment
2. Neuromuscular disorders
Pregnancy Related InformationContraindicatedOld Age Related InformationUse with caution
Breast Feeding Related InformationContraindicated
Children Related InformationUse with caution
Infants : Use with caution
Indications for Gentamicin1. Infections caused by staphylococci, pseudomonas, proteous, klebsiella, enterobacter & serratia.
2. Meningitis.
3. Endocarditis
4. Urinary Tract Infections.
5. Otitis & Ocular infections.
6. Infections of burns & Skin ulcers
Interactions for GentamicinAmphotericin B, Cisplatin, Cephalosporin, Vancomycin, Methoxyflurane, Frusemide, Bumetanide: Increased nephrotoxicity.
Anaesthetics, Neuromuscular blocking agents (Tubocurarine): Risk of neuromuscular blockade and respiratory paralysis.
Penicillin, Cephalosporins, Carbenicillin, Ticarcillin: Exert antibiotic synergism, especially useful in Pseudomonas infections.
Loop diuretics: Concurrent use of these agents may increase the risk of respiratory paralysis and renal dysfunction.
Lab Tests: Aminoglycoside serum levels: Guard against in vitro inactivation of aminoglycosides by b-lactum antibiotics in patients on combination therapy.Typical Dosage for GentamicinDosage:
Adults: 2 to 5mg/kg/day; Thrice daily for a week or more
Children: 2 to 2.5mg/kg; Thrice daily.
Schedule of GentamicinHStorage Requirements for GentamicinStore below 30 degree Celsius and protect from light.Effects of Missed Dosage of GentamicinTake the missed dose as soon as noticed and if it is the time to next dose then skip the missed dose.Continue the regular schedule. Do not double the dose.Effects of Overdose of GentamicinAn overdose results in ototoxicity, nephrotoxicity, neuromuscular disorders & hypersensitivity manifestations.Treatment includes removal of drug by dialysis or by treatment with anticholinesterase like neostigmine and by administration of Ca , Prednisolone etc.
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