Crotamiton¿¡ ´ëÇÑ Mechanism_Of_Action Á¤º¸ Crotamiton relieves itching by producing what is called a counter-irritation. As crotamiton evaporates from the skin, it produces a cooling effect. This cooling effect helps to divert your body's attention away from the itching. Lidocaine¿¡ ´ëÇÑ Mechanism_Of_Action Á¤º¸ Lidocaine stabilizes the neuronal membrane by inhibiting the ionic fluxes required for the initiation and conduction of impulses thereby effecting local anesthetic action. Miconazole¿¡ ´ëÇÑ Mechanism_Of_Action Á¤º¸ Miconazole interacts with 14-¥á demethylase, a cytochrome P-450 enzyme necessary to convert lanosterol to ergosterol. As ergosterol is an essential component of the fungal cell membrane, inhibition of its synthesis results in increased cellular permeability causing leakage of cellular contents. Miconazole may also inhibit endogenous respiration, interact with membrane phospholipids, inhibit the transformation of yeasts to mycelial forms, inhibit purine uptake, and impair triglyceride and/or phospholipid biosynthesis.
Pharmacology
Crotamiton¿¡ ´ëÇÑ Pharmacology Á¤º¸ Crotamiton is usually used to treat pruritis (itching of the skin) caused by scabies or sunburn. Crotamiton relieves itching by producing what is called a counter-irritation. As crotamiton evaporates from the skin, it produces a cooling effect. This cooling effect helps to divert your body's attention away from the itching. Due to this cooling effect it is also effective for the relief of sunburn. The drug is also believed to kill scabies through an unknown mechanism. Lidocaine¿¡ ´ëÇÑ Pharmacology Á¤º¸ Lidocaine is an anesthetic agent indicated for production of local or regional anesthesia and in the treatment of ventricular tachycardia occurring during cardiac manipulation, such as surgery or catheterization, or which may occur during acute myocardial infarction, digitalis toxicity, or other cardiac diseases. The mode of action of the antiarrhythmic effect of Lidocaine appears to be similar to that of procaine, procainamide and quinidine. Ventricular excitability is depressed and the stimulation threshold of the ventricle is increased during diastole. The sinoatrial node is, however, unaffected. In contrast to the latter 3 drugs, Lidocaine in therapeutic doses does not produce a significant decrease in arterial pressure or in cardiac contractile force. In larger doses, lidocaine may produce circulatory depression, but the magnitude of the change is less than that found with comparable doses of procainamide. Miconazole¿¡ ´ëÇÑ Pharmacology Á¤º¸ Miconazole is an anti-fungal medication related to fluconazole (Diflucan), ketoconazole (Nizoral), itraconazole (Sporanox), and clotrimazole (Lotrimin, Mycelex). It is used either on the skin or in the vagina for fungal infections. Miconazole was approved by the FDA in 1974. Miconazole prevents fungal organisms from producing vital substances required for growth and function. This medication is effective only for infections caused by fungal organisms. It will not work for bacterial or viral infections.
Crotamiton¿¡ ´ëÇÑ ´Ü¹é°áÇÕ Á¤º¸ Not Available Lidocaine¿¡ ´ëÇÑ ´Ü¹é°áÇÕ Á¤º¸ 60-80% Miconazole¿¡ ´ëÇÑ ´Ü¹é°áÇÕ Á¤º¸ Not Available
Half-life
Crotamiton¿¡ ´ëÇÑ ¹Ý°¨±â Á¤º¸ Not Available Lidocaine¿¡ ´ëÇÑ ¹Ý°¨±â Á¤º¸ 109 minutes Miconazole¿¡ ´ëÇÑ ¹Ý°¨±â Á¤º¸ Not Available
Absorption
Crotamiton¿¡ ´ëÇÑ Absorption Á¤º¸ 10 % absorbed when applied locally. Lidocaine¿¡ ´ëÇÑ Absorption Á¤º¸ Information derived from diverse formulations, concentrations and usages reveals that lidocaine is completely absorbed following parenteral administration, its rate of absorption depending, for example, upon various factors such as the site of administration and the presence or absence of a vasoconstrictor agent. Miconazole¿¡ ´ëÇÑ Absorption Á¤º¸ Not Available
Crotamiton¿¡ ´ëÇÑ Biotransformation Á¤º¸ Not Available Lidocaine¿¡ ´ëÇÑ Biotransformation Á¤º¸ Primarily hepatic. Miconazole¿¡ ´ëÇÑ Biotransformation Á¤º¸ Not Available
Toxicity
Crotamiton¿¡ ´ëÇÑ Toxicity Á¤º¸ Not Available Lidocaine¿¡ ´ëÇÑ Toxicity Á¤º¸ The oral LD 50 of lidocaine HCl in non-fasted female rats is 459 (346-773) mg/kg (as the salt) and 214 (159-324) mg/kg (as the salt) in fasted female rats. Symptoms of overdose include convulsions, hypoxia, acidosis, bradycardia, arrhythmias and cardiac arrest. Miconazole¿¡ ´ëÇÑ Toxicity Á¤º¸ Oral, mouse: LD50 = 3800 mg/kg; Oral, rat: LD50 = 3 gm/kg. Ingestion of the amounts of the components contained in a tube of cream are unlikely to produce overdosage and toxic effects.
Drug Interactions
Crotamiton¿¡ ´ëÇÑ Drug_Interactions Á¤º¸ Acetohexamide The beta-blocker decreases the symptoms of hypoglycemiaChlorpropamide The beta-blocker decreases the symptoms of hypoglycemiaCimetidine Cimetidine increases the effect of the beta-blockerClonidine Increased hypertension when clonidine stoppedDisopyramide The beta-blocker increases toxicity of disopyramideGliclazide The beta-blocker decreases the symptoms of hypoglycemiaGlipizide The beta-blocker decreases the symptoms of hypoglycemiaGlisoxepide The beta-blocker decreases the symptoms of hypoglycemiaGlibenclamide The beta-blocker decreases the symptoms of hypoglycemiaGlycodiazine The beta-blocker decreases the symptoms of hypoglycemiaInsulin The beta-blocker decreases the symptoms of hypoglycemiaLidocaine The beta-blocker increases the effect and toxicity of lidocainePropafenone Propafenone increases the effect of beta-blockerRepaglinide The beta-blocker decreases the symptoms of hypoglycemiaRifampin Rifampin decreases the effect of the metabolized beta-blockerTelithromycin Telithromycin may possibly increase metoprolol effectTolazamide The beta-blocker decreases the symptoms of hypoglycemiaTolbutamide The beta-blocker decreases the symptoms of hypoglycemiaAmobarbital The barbiturate decreases the effect of metabolized beta-blockerAprobarbital The barbiturate decreases the effect of metabolized beta-blockerButalbital The barbiturate decreases the effect of metabolized beta-blockerButabarbital The barbiturate decreases the effect of metabolized beta-blockerButethal The barbiturate decreases the effect of metabolized beta-blockerDihydroquinidine barbiturate The barbiturate decreases the effect of metabolized beta-blockerHeptabarbital The barbiturate decreases the effect of metabolized beta-blockerHexobarbital The barbiturate decreases the effect of metabolized beta-blockerMethohexital The barbiturate decreases the effect of metabolized beta-blockerMethylphenobarbital The barbiturate decreases the effect of metabolized beta-blockerPentobarbital The barbiturate decreases the effect of metabolized beta-blockerPhenobarbital The barbiturate decreases the effect of metabolized beta-blockerPrimidone The barbiturate decreases the effect of metabolized beta-blockerQuinidine barbiturate The barbiturate decreases the effect of metabolized beta-blockerSecobarbital The barbiturate decreases the effect of metabolized beta-blockerTalbutal The barbiturate decreases the effect of metabolized beta-blockerCitalopram The SSRI increases the effect of the beta-blockerEscitalopram The SSRI increases the effect of the beta-blockerFluoxetine The SSRI increases the effect of the beta-blockerSertraline The SSRI increases the effect of the beta-blockerParoxetine The SSRI increases the effect of the beta-blockerDihydroergotamine Ischemia with risk of gangreneDihydroergotoxine Ischemia with risk of gangreneErgonovine Ischemia with risk of gangreneErgotamine Ischemia with risk of gangreneMethysergide Ischemia with risk of gangreneVerapamil Increased effect of both drugsHydralazine Increased effect of both drugsDiltiazem Increased risk of bradycardiaEpinephrine Hypertension, then bradycardiaFenoterol AntagonismFormoterol AntagonismIsoproterenol AntagonismOrciprenaline AntagonismPirbuterol AntagonismPrazosin Risk of hypotension at the beginning of therapyProcaterol AntagonismSalbutamol AntagonismSalmeterol AntagonismTerbutaline AntagonismIbuprofen Risk of inhibition of renal prostaglandinsIndomethacin Risk of inhibition of renal prostaglandinsPiroxicam Risk of inhibition of renal prostaglandins Lidocaine¿¡ ´ëÇÑ Drug_Interactions Á¤º¸ Not Available Miconazole¿¡ ´ëÇÑ Drug_Interactions Á¤º¸ Warfarin Vaginal miconazole increases the anticoagulant effectAcenocoumarol Vaginal miconazole increases the anticoagulant effectDicumarol Vaginal miconazole increases the anticoagulant effectAnisindione Vaginal miconazole increases the anticoagulant effect
Crotamiton¿¡ ´ëÇÑ Food Interaction Á¤º¸ Not Available Lidocaine¿¡ ´ëÇÑ Food Interaction Á¤º¸ Not Available Miconazole¿¡ ´ëÇÑ Food Interaction Á¤º¸ Not Available
Crotamiton¿¡ ´ëÇÑ Description Á¤º¸ Crotamiton is a scabicidal and antipruritic agent available as a cream or lotion for topical use only. It is a colorless to slightly yellowish oil, having a faint amine-like odor. It is miscible with alcohol and with methanol. Lidocaine¿¡ ´ëÇÑ Description Á¤º¸ A local anesthetic and cardiac depressant used as an antiarrhythmia agent. Its actions are more intense and its effects more prolonged than those of procaine but its duration of action is shorter than that of bupivacaine or prilocaine. [PubChem] Miconazole¿¡ ´ëÇÑ Description Á¤º¸ An imidazole antifungal agent that is used topically and by intravenous infusion. [PubChem]