Doxycycline¿¡ ´ëÇÑ Mechanism_Of_Action Á¤º¸ Doxycycline, like minocycline, is lipophilic and can pass through the lipid bilayer of bacteria. Doxycycline reversibly binds to the 30 S ribosomal subunits and possibly the 50S ribosomal subunit(s), blocking the binding of aminoacyl tRNA to the mRNA and inhibiting bacterial protein synthesis.
Pharmacology
Doxycycline¿¡ ´ëÇÑ Pharmacology Á¤º¸ Doxycycline, a long-acting tetracycline derived from oxytetracycline, is used to inhibit bacterial protein synthesis and treat non-gonococcal urethritis and cervicitis, exacerbations of bronchitis in patients with COPD, and adult periodontitis.
Doxycycline¿¡ ´ëÇÑ Absorption Á¤º¸ Completely absorbed following oral administration.
Biotransformation
Doxycycline¿¡ ´ëÇÑ Biotransformation Á¤º¸ Hepatic
Toxicity
Doxycycline¿¡ ´ëÇÑ Toxicity Á¤º¸ Symptoms of overdose include anorexia, nausea, diarrhoea, glossitis, dysphagia, enterocolitis and inflammatory lesions (with monilial overgrowth) in the anogenital region, skin reactions such as maculopapular and erythematous rashes, exfoliative dermatitis, photosensitivity, hypersensitivity reactions such as urticaria, angioneurotic oedema, anaphylaxis, anaphyl-actoid purpura, pericarditis, and exacerbation of systemic lupus erythematosus, benign intracranial hypertension in adults disappearing on discontinuation of the medicine, haematologic abnormalities such as haemolytic anaemia, thrombocytopenia, neutropenia, and eosinophilia. LD50=262 mg/kg (I.P. in rat).
Drug Interactions
Doxycycline¿¡ ´ëÇÑ Drug_Interactions Á¤º¸ Acitretin Increased risk of intracranial hypertensionAmobarbital The anticonvulsant decreases the effect of doxycyclineAmoxicillin Possible antagonism of actionAmpicillin Possible antagonism of actionAnisindione The tetracycline increases the anticoagulant effectAprobarbital The anticonvulsant decreases the effect of doxycyclineAzlocillin Possible antagonism of actionAztreonam Possible antagonism of actionCarbenicillin Possible antagonism of actionButabarbital The anticonvulsant decreases the effect of doxycyclineButalbital The anticonvulsant decreases the effect of doxycyclineButethal The anticonvulsant decreases the effect of doxycyclineCarbamazepine The anticonvulsant decreases the effect of doxycyclineClavulanate Possible antagonism of actionCloxacillin Possible antagonism of actionCyclacillin Possible antagonism of actionDicloxacillin Possible antagonism of actionDicumarol The tetracycline increases the anticoagulant effectDigoxin The tetracycline increases the effect of digoxin in 10% of patientsDihydroquinidine barbiturate The anticonvulsant decreases the effect of doxycyclineEthinyl Estradiol This anti-infectious agent could decrease the effect of the oral contraceptiveEthotoin The anticonvulsant decreases the effect of doxycyclineEtretinate Increased risk of intracranial hypertensionFlucloxacillin Possible antagonism of actionFosphenytoin The anticonvulsant decreases the effect of doxycyclineHeptabarbital The anticonvulsant decreases the effect of doxycyclineHetacillin Possible antagonism of actionHexobarbital The anticonvulsant decreases the effect of doxycyclineInsulin Tetracycline increases the risk of hypoglycemiaInsulin-aspart Tetracycline increases the risk of hypoglycemiaInsulin-detemir Tetracycline increases the risk of hypoglycemiaInsulin-glargine Tetracycline increases the risk of hypoglycemiaInsulin-glulisine Tetracycline increases the risk of hypoglycemiaInsulin-lispro Tetracycline increases the risk of hypoglycemiaIsotretinoin Increased risk of intracranial hypertensionMephenytoin The anticonvulsant decreases the effect of doxycyclineMestranol This anti-infectious agent could decrease the effect of the oral contraceptiveMezlocillin Possible antagonism of actionMethohexital The anticonvulsant decreases the effect of doxycyclineMethylphenobarbital The anticonvulsant decreases the effect of doxycyclineNafcillin Possible antagonism of actionOxacillin Possible antagonism of actionPenicillin G Possible antagonism of actionPenicillin V Possible antagonism of actionPhenobarbital The anticonvulsant decreases the effect of doxycyclinePentobarbital The anticonvulsant decreases the effect of doxycyclinePhenytoin The anticonvulsant decreases the effect of doxycyclinePiperacillin Possible antagonism of actionPrimidone The anticonvulsant decreases the effect of doxycyclineQuinidine barbiturate The anticonvulsant decreases the effect of doxycyclineRifabutin The rifamycin decreases the effect of doxycyclineRifampin The rifamycin decreases the effect of doxycyclineSecobarbital The anticonvulsant decreases the effect of doxycyclineTalbutal The anticonvulsant decreases the effect of doxycyclineWarfarin The tetracycline increases the anticoagulant effectAluminium Formation of non-absorbable complexesMethotrexate The tetracycline increases methotrexate toxicityMagnesium oxide Formation of non-absorbable complexesMagnesium Formation of non-absorbable complexesAttapulgite Formation of non-absorbable complexesBacampicillin Possible antagonism of actionBismuth Formation of non-absorbable complexesCalcium Formation of non-absorbable complexesIron Formation of non-absorbable complexesMeticillin Possible antagonism of actionZinc Formation of non-absorbable complexesAcenocoumarol The tetracycline increases the anticoagulant effectPivampicillin Possible antagonism of actionPivmecillinam Possible antagonism of actionTazobactam Possible antagonism of actionTicarcillin Possible antagonism of action
Doxycycline¿¡ ´ëÇÑ Food Interaction Á¤º¸ Avoid alcohol.Avoid milk, calcium containing dairy products, iron, antacids, or aluminum salts 2 hours before or 6 hours after using antacids while on this medication.Take with a full glass of water Do not take calcium, aluminum, magnesium or Iron supplements within 2 hours of taking this medication.
Doxycycline¿¡ ´ëÇÑ Description Á¤º¸ A synthetic tetracycline derivative with similar antimicrobial activity. Animal studies suggest that it may cause less tooth staining than other tetracyclines. It is used in some areas for the treatment of chloroquine-resistant falciparum malaria (malaria, falciparum). [PubChem]