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	[Á¶È¸]    
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    | Related FDA Approved Drug | 
    
      
      ±âÁØ ¼ººÐ: CHLORZOXAZONECHLORZOXAZONE (CHLORZOXAZONE) 
PARAFLEX (CHLORZOXAZONE) 
PARAFON FORTE DSC (CHLORZOXAZONE) 
STRIFON FORTE DSC (CHLORZOXAZONE) 
±âÁØ ¼ººÐ: CAFFEINEACETAMINOPHEN, ASPIRIN AND CAFFEINE (ACETAMINOPHEN; ASPIRIN; CAFFEINE) 
ACETAMINOPHEN, BUTALBITAL AND CAFFEINE (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
ACETAMINOPHEN, CAFFEINE, AND DIHYDROCODEINE BITARTRATE (ACETAMINOPHEN; CAFFEINE; DIHYDROCODEINE BITARTRATE) 
ANOQUAN (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
BUTALBITAL ACETAMINOPHEN AND CAFFEINE (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
BUTALBITAL, ACETAMINOPHEN AND CAFFEINE (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
BUTALBITAL, ACETAMINOPHEN, AND CAFFEINE WITH CODEINE PHOSPHATE (ACETAMINOPHEN; BUTALBITAL; CAFFEINE; CODEINE PHOSPHATE) 
BUTALBITAL, ACETAMINOPHEN, CAFFEINE AND CODEINE PHOSPHATE (ACETAMINOPHEN; BUTALBITAL; CAFFEINE; CODEINE PHOSPHATE) 
BUTALBITAL, ASPIRIN AND CAFFEINE (ASPIRIN; BUTALBITAL; CAFFEINE) 
BUTALBITAL, ASPIRIN, CAFFEINE, AND CODEINE PHOSPHATE (ASPIRIN; BUTALBITAL; CAFFEINE; CODEINE PHOSPHATE) 
BUTALBITAL; ACETAMINOPHEN; CAFFEINE; CODEINE (BUTALBITAL; ACETAMINOPHEN; CAFFEINE; CODEINE PHOSPHATE) 
CAFCIT (CAFFEINE CITRATE) 
CAFERGOT (CAFFEINE; ERGOTAMINE TARTRATE) 
CAFFEINE CITRATE (CAFFEINE CITRATE) 
COMPOUND 65 (ASPIRIN; CAFFEINE; PROPOXYPHENE HYDROCHLORIDE) 
DARVON COMPOUND (ASPIRIN; CAFFEINE; PROPOXYPHENE HYDROCHLORIDE) 
DARVON COMPOUND-65 (ASPIRIN; CAFFEINE; PROPOXYPHENE HYDROCHLORIDE) 
DHC PLUS (ACETAMINOPHEN; CAFFEINE; DIHYDROCODEINE BITARTRATE) 
ERGOTAMINE TARTRATE AND CAFFEINE (CAFFEINE; ERGOTAMINE TARTRATE) 
ESGIC (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
ESGIC-PLUS (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
EXCEDRIN (MIGRAINE) (ACETAMINOPHEN; ASPIRIN; CAFFEINE) 
FEMCET (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
FIORICET (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
FIORICET W/ CODEINE (ACETAMINOPHEN; BUTALBITAL; CAFFEINE; CODEINE PHOSPHATE) 
FIORINAL (ASPIRIN; BUTALBITAL; CAFFEINE) 
FIORINAL W/CODEINE (ASPIRIN; BUTALBITAL; CAFFEINE; CODEINE PHOSPHATE) 
INVAGESIC (ASPIRIN; CAFFEINE; ORPHENADRINE CITRATE) 
INVAGESIC FORTE (ASPIRIN; CAFFEINE; ORPHENADRINE CITRATE) 
LANORINAL (ASPIRIN; BUTALBITAL; CAFFEINE) 
MEDIGESIC PLUS (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
MIGERGOT (CAFFEINE; ERGOTAMINE TARTRATE) 
NORGESIC (ASPIRIN; CAFFEINE; ORPHENADRINE CITRATE) 
NORGESIC FORTE (ASPIRIN; CAFFEINE; ORPHENADRINE CITRATE) 
ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE (ASPIRIN; CAFFEINE; ORPHENADRINE CITRATE) 
ORPHENGESIC (ASPIRIN; CAFFEINE; ORPHENADRINE CITRATE) 
ORPHENGESIC FORTE (ASPIRIN; CAFFEINE; ORPHENADRINE CITRATE) 
PHRENILIN WITH CAFFEINE AND CODEINE (ACETAMINOPHEN; BUTALBITAL; CAFFEINE; CODEINE PHOSPHATE) 
PROPOXYPHENE COMPOUND 65 (ASPIRIN; CAFFEINE; PROPOXYPHENE HYDROCHLORIDE) 
PROPOXYPHENE COMPOUND-65 (ASPIRIN; CAFFEINE; PROPOXYPHENE HYDROCHLORIDE) 
PROPOXYPHENE HYDROCHLORIDE W/ ASPIRIN AND CAFFEINE (ASPIRIN; CAFFEINE; PROPOXYPHENE HYDROCHLORIDE) 
SYNALGOS-DC (ASPIRIN; CAFFEINE; DIHYDROCODEINE BITARTRATE) 
SYNALGOS-DC-A (ACETAMINOPHEN; CAFFEINE; DIHYDROCODEINE BITARTRATE) 
TRIAD (ACETAMINOPHEN; BUTALBITAL; CAFFEINE) 
WIGRAINE (CAFFEINE; ERGOTAMINE TARTRATE) 
        
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    | Mechanism of Action | 
    
       Caffeine¿¡ ´ëÇÑ Mechanism_Of_Action Á¤º¸ Caffeine stimulates medullary, vagal, vasomotor, and respiratory centers, promoting bradycardia, vasoconstriction, and increased respiratory rate. This action was previously believed to be due primarily to increased intracellular cyclic 3¡Ç,5¡Ç-adenosine monophosphate (cyclic AMP) following inhibition of phosphodiesterase, the enzyme that degrades cyclic AMP. It is now thought that xanthines such as caffeine act as agonists at adenosine-receptors within the plasma membrane of virtually every cell. As adenosine acts as an autocoid, inhibiting the release of neurotransmitters from presynaptic sites but augmenting the actions of norepinephrine or angiotensin, antagonism of adenosine receptors promotes neurotransmitter release. This explains the stimulatory effects of caffeine. Blockade of the adenosine A1 receptor in the heart leads to the accelerated, pronounced "pounding" of the heart upon caffeine intake.
  Chlorzoxazone¿¡ ´ëÇÑ Mechanism_Of_Action Á¤º¸ Chlorzoxazone inhibits degranulation of mast cells, subsequently preventing the release of histamine and slow-reacting substance of anaphylaxis (SRS-A), mediators of type I allergic reactions. Chlorzoxazone also may reduce the release of inflammatory leukotrienes. Chlorzoxazone may act by inhibiting calcium influx. 
     | 
   
  
   
    | Pharmacology | 
     
       Caffeine¿¡ ´ëÇÑ Pharmacology Á¤º¸ Caffeine, a naturally occurring xanthine derivative like theobromine and the bronchodilator theophylline, is used as a CNS stimulant, mild diuretic, and respiratory stimulant (in neonates with apnea of prematurity). Often combined with analgesics or with ergot alkaloids, caffeine is used to treat migraine and other headache types. Over the counter, caffeine is available to treat drowsiness or mild water-weight gain.
  Chlorzoxazone¿¡ ´ëÇÑ Pharmacology Á¤º¸ Chlorzoxazone, a synthetic compound, inhibits antigen-induced bronchospasms and, hence, is used to treat asthma and allergic rhinitis. Chlorzoxazone is used as an ophthalmic solution to treat conjunctivitis and is taken orally to treat systemic mastocytosis and ulcerative colitis. Chlorzoxazone is also a centrally-acting agent for painful musculoskeletal conditions. Data available from animal experiments as well as human study indicate that chlorzoxazone acts primarily at the level of the spinal cord and subcortical areas of the brain where it inhibits multisynaptic reflex a.c. involved in producing and maintaining skeletal muscle spasm of varied etiology. The clinical result is a reduction of the skeletal muscle spasm with relief of pain and increased mobility of the involved muscles. 
     | 
   
  
   
    | Protein Binding | 
    
       Caffeine¿¡ ´ëÇÑ ´Ü¹é°áÇÕ Á¤º¸ Low (25 to 36%).
  Chlorzoxazone¿¡ ´ëÇÑ ´Ü¹é°áÇÕ Á¤º¸ 13-18% 
     | 
   
  
   
    | Half-life | 
    
       Caffeine¿¡ ´ëÇÑ ¹Ý°¨±â Á¤º¸ 3 to 7 hours in adults, 65 to 130 hours in neonates
  Chlorzoxazone¿¡ ´ëÇÑ ¹Ý°¨±â Á¤º¸ Not Available 
     | 
   
  
   
    | Absorption | 
    
       Caffeine¿¡ ´ëÇÑ Absorption Á¤º¸ Readily absorbed after oral or parenteral administration. The peak plasma level for caffeine range from 6-10mg/L and the mean time to reach peak concentration ranged from 30 minutes to 2 hours.
  Chlorzoxazone¿¡ ´ëÇÑ Absorption Á¤º¸ Not Available 
     | 
   
  
   
    | Pharmacokinetics | 
    
       ChlorzoxazoneÀÇ ¾à¹°µ¿·ÂÇÐÀÚ·á 
- ÀÛ¿ë¹ßÇö½Ã°£ : 1½Ã°£ À̳»
 - Èí¼ö : °æ±¸ : ½Å¼ÓÇÏ°Ô Èí¼öµÊ
 - ´ë»ç : °£¿¡¼ glucuronide Æ÷ÇÕÀ¸·Î ¸¹Àº ¾çÀÌ ´ë»çµÊ
 - ¼Ò½Ç : Æ÷ÇÕü·Î ½Å¹è¼³
  
 CaffeineÀÇ ¾à¹°µ¿·ÂÇÐÀÚ·á 
	-  Èí¼ö : °æ±¸ : ½Å¼ÓÇϰÔ, ¿ÏÀüÈ÷ Èí¼öµÊ (99%)
 
  -  ºÐÆ÷ : ¸ðµç ü¾×¿¡ ºÐÆ÷Çϸç, ³úÇ÷°üÀ庮, ŹÝÀ» Åë°úÇϰí, À¯ÁóÀ¸·Îµµ ºÐºñµÊ
		
		-  ºÐÆ÷¿ëÀû :
		
 -  ½Å»ý¾Æ : 0.92 L/kg
		
 -  ¼ºÀÎ : 0.58 L/kg
		
  
 	 -  ´Ü¹é°áÇÕ : 15-35%
	
 -  ´ë»ç : ¼ºÀÎ : °ÅÀÇ ´ëºÎºÐÀÌ °£¿¡¼ ´ë»çµÇ¸ç, Å»¸ÞƿȵǾî paraxanthine (72%), theobromine (20%), theophylline (8%)À¸·Î ´ë»çµÊ
	
 
  -  ¹Ý°¨±â : 
   		
		-  ¹Ì¼÷¾Æ : 65-103 ½Ã°£
	   	
 -  ¿Ï¼÷¾Æ : 82½Ã°£
   		
 -  3-4°³¿ù ¿µ¾Æ : 14.4 ½Ã°£
   		
 -  5-6°³¿ù ¿µ¾Æ : 2.6 ½Ã°£
   		
 -  ¼ºÀÎ : 3-7.5 ½Ã°£ (Æò±Õ 4.9 ½Ã°£)
   		
 -  ÀӽźΠ: 18½Ã°£±îÁö
		
  
	
  -  Ç÷ÁßÃÖ°í³óµµ µµ´Þ½Ã°£ : 15-45ºÐ
	
 
  -  ¼Ò½Ç : 
   	
		-  ¼ºÀÎ : ¹Ìº¯Èü·Î ½Å¹è¼³µÇ´Â ¾çÀº 0.5-3.5%
   		
 -  ½Å»ý¾Æ : °ÅÀÇ ´ëºÎºÐ ¹Ìº¯Èü·Î ½Å¹è¼³µÊ
		
  
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    | Biotransformation | 
    
       Caffeine¿¡ ´ëÇÑ Biotransformation Á¤º¸ Hepatic cytochrome P450 1A2 (CYP 1A2) is involved in caffeine biotransformation. About 80% of a dose of caffeine is metabolized to paraxanthine (1,7-dimethylxanthine), 10% to theobromine (3,7-dimethylxanthine), and 4% to theophylline (1,3-dimethylxanthine).
  Chlorzoxazone¿¡ ´ëÇÑ Biotransformation Á¤º¸ Chlorzoxazone is rapidly metabolized in the liver and is excreted in the urine, primarily in a conjugated form as the glucuronide. 
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    | Toxicity | 
    
       Caffeine¿¡ ´ëÇÑ Toxicity Á¤º¸ LD50=127 mg/kg (orally in mice)
  Chlorzoxazone¿¡ ´ëÇÑ Toxicity Á¤º¸ Oral, mouse: LD50 = 440 mg/kg; Oral, rat: LD50 = 763 mg/kg; Symptoms of overdose include diarrhea, dizziness, drowsiness, headache, light-headedness, nausea, and vomiting. 
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    | Drug Interactions | 
    
       Caffeine¿¡ ´ëÇÑ Drug_Interactions Á¤º¸ Not Available
  Chlorzoxazone¿¡ ´ëÇÑ Drug_Interactions Á¤º¸ Disulfiram	Disulfiram increases chlorzoxazone levels 
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    CYP450  Drug Interaction | 
    
      [CYP450 TableÁ÷Á¢Á¶È¸] Chlorzoxazone¿¡ ´ëÇÑ P450 table
  SUBSTRATES 
CYP 2E1 
acetaminophen 
**chlorzoxazone** 
ethanol 
 INHIBITORS 
CYP 2E1 
disulfiram 
 INDUCERS 
CYP 2E1 
ethanol 
isoniazid 
 
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    | Drug Target | 
    
      
      [Drug Target]
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    | SNP Á¤º¸ | 
    
      Name:Caffeine (DB00201)
 Interacting Gene/Enzyme:Cytochrome P450 1A2 (Gene symbol = CYP1A2) Swissprot P05177
 SNP(s):rs762551 (C allele)
 Effect:Myocardial infarction
 Reference(s):Cornelis MC, El-Sohemy A, Kabagambe EK, Campos H: Coffee, CYP1A2 genotype, and risk of myocardial infarction. JAMA. 2006 Mar 8;295(10):1135-41. [PubMed] 
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    | Description | 
    
       Caffeine¿¡ ´ëÇÑ Description Á¤º¸ A methylxanthine naturally occurring in some beverages and also used as a pharmacological agent. Caffeine&
  Chlorzoxazone¿¡ ´ëÇÑ Description Á¤º¸ A centrally acting central muscle relaxant with sedative properties. It is claimed to inhibit muscle spasm by exerting an effect primarily at the level of the spinal cord and subcortical areas of the brain. (From Martindale, The Extra Pharmacopoea, 30th ed, p1202) 
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    | Dosage Form | 
    
       Caffeine¿¡ ´ëÇÑ Dosage_Form Á¤º¸ Capsule	OralElixir	OralLiquid	OralPill	OralSolution	OralSolution / drops	OralSuppository	RectalSuspension	OralSyrup	OralTablet	OralTablet, extended release	Oral
  Chlorzoxazone¿¡ ´ëÇÑ Dosage_Form Á¤º¸ Capsule	Oral 
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    | Drug Category | 
    
       Caffeine¿¡ ´ëÇÑ Drug_Category Á¤º¸ Anorexigenic AgentsCentral Nervous System StimulantsPhosphodiesterase Inhibitors
  Chlorzoxazone¿¡ ´ëÇÑ Drug_Category Á¤º¸ Muscle Relaxants, Central 
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    | Smiles String Canonical | 
    
       Caffeine¿¡ ´ëÇÑ Smiles_String_canonical Á¤º¸ CN1C=NC2=C1C(=O)N(C)C(=O)N2C
  Chlorzoxazone¿¡ ´ëÇÑ Smiles_String_canonical Á¤º¸ ClC1=CC2=C(OC(=O)N2)C=C1 
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    | Smiles String Isomeric | 
    
       Caffeine¿¡ ´ëÇÑ Smiles_String_isomeric Á¤º¸ CN1C=NC2=C1C(=O)N(C)C(=O)N2C
  Chlorzoxazone¿¡ ´ëÇÑ Smiles_String_isomeric Á¤º¸ ClC1=CC2=C(OC(=O)N2)C=C1 
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    | InChI Identifier | 
    
       Caffeine¿¡ ´ëÇÑ InChI_Identifier Á¤º¸ InChI=1/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(14)11(6)2/h4H,1-3H3
  Chlorzoxazone¿¡ ´ëÇÑ InChI_Identifier Á¤º¸ InChI=1/C7H4ClNO2/c8-4-1-2-6-5(3-4)9-7(10)11-6/h1-3H,(H,9,10)/f/h9H 
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    | Chemical IUPAC Name | 
    
       Caffeine¿¡ ´ëÇÑ Chemical_IUPAC_Name Á¤º¸ 1,3,7-trimethylpurine-2,6-dione
  Chlorzoxazone¿¡ ´ëÇÑ Chemical_IUPAC_Name Á¤º¸ 5-chloro-3H-1,3-benzoxazol-2-one 
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    | Drug-Induced Toxicity Related Proteins | 
    
      CAFFEINE ÀÇ Drug-Induced Toxicity Related ProteinÁ¤º¸ Replated Protein:Metallothionein Drug:caffeine Toxicity:hepatotoxicity.  [¹Ù·Î°¡±â] 
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