General Information of DFM (ID: F08213)
Name	Fidaxomicin 200 mg tablet
Company	Avera McKennan Hospital; Merck Sharp & Dohme
Active Pharmaceutical Ingredient (API)	Fidaxomicin		API Info click to show the detail info of this API
	Clostridium difficile infection		ICD-11: 1A04	Approved
Drug Inactive Ingredient (DIGs)
	DIG ID	DIG Info	DIG Name	DIG Functional Class
	E0J0LX	DIG Info	Butylated hydroxytoluene	Antioxidant
	E01UTP	DIG Info	Magnesium stearate	lubricant
	E0V3ER	DIG Info	Polyvinyl alcohol	Coating agent ...
	E0HR5F	DIG Info	Soybean lecithin	Other agent
	E0QY1F	DIG Info	Talc	Anticaking agent ...
	E05BSD	DIG Info	Titanium dioxide	Coating agent ...

Full List of Biological Targets of DIG (DBTs) Regulated by DIG(s) in This DFM
Oxidoreductase (ORase)
DBT Name: Albendazole monooxygenase (CYP3A4)				Click to Show/Hide
Detailed Information	DBT Info click to show the detail info of this DBT
Experiment (1) for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Magnesium stearate
Biological Activity	Protein expression downregulation (tested by experiment)					[1]
Tested Species	Homo sapiens (Human)
UniProt ID	CP3A4_HUMAN
Experiment (2) for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Soybean lecithin
Biological Activity	IC50 = 6.61 mg.mL-1 (tested by experiment)					[2]
Tested Species	Homo sapiens (Human)
UniProt ID	CP3A4_HUMAN
DBT Name: Cytochrome P450 2E1 (CYP2E1)				Click to Show/Hide
Detailed Information	DBT Info click to show the detail info of this DBT
Experiment for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Polyvinyl alcohol
Biological Activity	IC50 = 548.9 uM (tested by experiment)					[3]
Tested Species	Homo sapiens (Human)
UniProt ID	CP2E1_HUMAN
DBT Name: Debrisoquine 4-hydroxylase (CYP2D6)				Click to Show/Hide
Detailed Information	DBT Info click to show the detail info of this DBT
Experiment for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Polyvinyl alcohol
Biological Activity	EC50 = 354.8 uM (tested by experiment)					[3]
Tested Species	Homo sapiens (Human)
UniProt ID	CP2D6_HUMAN
Lyase/isomerase/ligase (L/I/G)
DBT Name: Carbonic anhydrase I (CA1)				Click to Show/Hide
Detailed Information	DBT Info click to show the detail info of this DBT
Experiment for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Butylated hydroxytoluene
Biological Activity	Ki = 245200 nM (tested by experiment)					[4]
Tested Species	Homo sapiens (Human)
UniProt ID	CAH1_HUMAN
DBT Name: Carbonic anhydrase II (CA2)				Click to Show/Hide
Detailed Information	DBT Info click to show the detail info of this DBT
Experiment for Assessing the Biological Activity of the Studied DIG on This DBT
Interacting DIG	Butylated hydroxytoluene
Biological Activity	Ki = 630 nM (tested by experiment)					[4]
Tested Species	Homo sapiens (Human)
UniProt ID	CAH2_HUMAN

References
1	Effects of commonly used excipients on the expression of CYP3A4 in colon and liver cells. Pharm Res. 2010 Aug;27(8):1703-12.
2	Pharmaceutical excipients inhibit cytochrome P450 activity in cell free systems and after systemic administration. Eur J Pharm Biopharm. 2008 Sep;70(1):279-88.
3	Mediation of in vitro cytochrome p450 activity by common pharmaceutical excipients. Mol Pharm. 2013 Jul 1;10(7):2739-48.
4	Carbonic anhydrase inhibitors. Inhibition of human erythrocyte isozymes I and II with a series of antioxidant phenols. Bioorg Med Chem. 2009 Apr 15; 17(8):3207-11.

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