Details of Drug-Drug Interaction
| Drug General Information (ID: DDIKW94N1B) | |||||||||
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| Drug Name | Vardenafil | Drug Info | Riociguat | Drug Info | |||||
| Drug Type | Small molecule | Small molecule | |||||||
| Therapeutic Class | Impotence Agents | Vasodilator Agents | |||||||
| Structure | |||||||||
| Mechanism of Vardenafil-Riociguat Interaction (Severity Level: Major) | |||||||||
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| Additive hypotensive effects Click to Show/Hide Mechanism Graph | |||||||||
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| Drug Name | Vardenafil | Riociguat | |||||||
| Mechanism |
Hypotensive effects Phosphodiesterase 5A Inhibitor |
Hypotensive effects Soluble guanylyl cyclase Agonist |
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| Key Mechanism Factor 1 | |||||||||
| Factor Name | Phosphodiesterase 5A |
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Structure
Sequence
MERAGPSFGQQRQQQQPQQQKQQQRDQDSVEAWLDDHWDFTFSYFVRKATREMVNAWFAERVHTIPVCKEGIRGHTESCSCPLQQSPRADNSAPGTPTRKISASEFDRPLRPIVVKDSEGTVSFLSDSEKKEQMPLTPPRFDHDEGDQCSRLLELVKDISSHLDVTALCHKIFLHIHGLISADRYSLFLVCEDSSNDKFLISRLFDVAEGSTLEEVSNNCIRLEWNKGIVGHVAALGEPLNIKDAYEDPRFNAEVDQITGYKTQSILCMPIKNHREEVVGVAQAINKKSGNGGTFTEKDEKDFAAYLAFCGIVLHNAQLYETSLLENKRNQVLLDLASLIFEEQQSLEVILKKIAATIISFMQVQKCTIFIVDEDCSDSFSSVFHMECEELEKSSDTLTREHDANKINYMYAQYVKNTMEPLNIPDVSKDKRFPWTTENTGNVNQQCIRSLLCTPIKNGKKNKVIGVCQLVNKMEENTGKVKPFNRNDEQFLEAFVIFCGLGIQNTQMYEAVERAMAKQMVTLEVLSYHASAAEEETRELQSLAAAVVPSAQTLKITDFSFSDFELSDLETALCTIRMFTDLNLVQNFQMKHEVLCRWILSVKKNYRKNVAYHNWRHAFNTAQCMFAALKAGKIQNKLTDLEILALLIAALSHDLDHRGVNNSYIQRSEHPLAQLYCHSIMEHHHFDQCLMILNSPGNQILSGLSIEEYKTTLKIIKQAILATDLALYIKRRGEFFELIRKNQFNLEDPHQKELFLAMLMTACDLSAITKPWPIQQRIAELVATEFFDQGDRERKELNIEPTDLMNREKKNKIPSMQVGFIDAICLQLYEALTHVSEDCFPLLDGCRKNRQKWQALAEQQEKMLINGESGQAKRN
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| Gene Name | PDE5A | ||||||||
| Uniprot ID | PDE5A_HUMAN | ||||||||
| KEGG Pathway | hsa:8654 | ||||||||
| Protein Family | Cyclic nucleotide phosphodiesterase family | ||||||||
| Protein Function |
Plays a role in signal transduction by regulating the intracellular concentration of cyclic nucleotides. This phosphodiesterase catalyzes the specific hydrolysis of cGMP to 5'-GMP (PubMed:9714779, PubMed:15489334). Specifically regulates nitric-oxide-generated cGMP (PubMed:15489334).
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| Key Mechanism Factor 2 | |||||||||
| Factor Name | Guanylate cyclase soluble | Structure Sequence | |||||||
| Protein Family | Adenylyl cyclase class-4/guanylyl cyclase family | ||||||||
| Protein Function |
Mediates responses to nitric oxide (NO) by catalyzing the biosynthesis of the signaling molecule cGMP.
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| Mechanism Description |
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| Recommended Action | |||||||||
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| Management | Concomitant use of riociguat with PDE inhibitors, including specific PDE-5 inhibitors (e.g., avanafil, sildenafil, tadalafil, vardenafil) or nonspecific PDE inhibitors (e.g., dipyridamole, theophylline), is considered contraindicated. Riociguat should be discontinued at least 24 hours before administering a PDE-5 inhibitor, and avoidance of riociguat administration within 24 hours after sildenafil or within 48 hours after tadalafil is recommended. Limited data exists for other PDE inhibitors. | ||||||||