{"id":"standard-medication-for-variant-angina","safety":{"commonSideEffects":[{"rate":"10-15","effect":"Headache"},{"rate":"5-10","effect":"Dizziness"},{"rate":"5-10","effect":"Peripheral edema"},{"rate":"5-10","effect":"Constipation"},{"rate":"2-5","effect":"Hypotension"},{"rate":"2-5","effect":"Bradycardia"}]},"_chembl":null,"_dailymed":null,"mechanism":{"_ai_source":"claude-haiku-4.5","explanation":"Variant angina (Prinzmetal's angina) is caused by episodic coronary artery vasospasm. Calcium channel blockers inhibit L-type calcium channels in vascular smooth muscle, preventing the influx of calcium ions that triggers vasoconstriction. This reduces the frequency and severity of vasospastic episodes and relieves anginal chest pain.","oneSentence":"Calcium channel blockers relax coronary artery smooth muscle to prevent vasospasm and improve blood flow in variant angina.","_ai_confidence":"high"},"_scrapedAt":"2026-03-28T00:09:25.752Z","_scrapedBy":"cloudflare-swarm","_wikipedia":null,"indications":{"approved":[{"name":"Variant angina (Prinzmetal's angina)"},{"name":"Angina pectoris prevention"}]},"trialDetails":[{"nctId":"NCT03228238","phase":"PHASE4","title":"ANti-Oxidant in Variant Angina (ANOVA) Trial","status":"UNKNOWN","sponsor":"Seoul National University Hospital","startDate":"2014-09-01","conditions":"Variant Angina","enrollment":300}],"_emaApprovals":[],"_faersSignals":[],"_approvalHistory":[],"publicationCount":0,"rwe":[],"genericFilers":[],"relatedDrugs":[],"labelChanges":[],"biosimilarFilings":[],"pricing":[],"formularyStatus":[],"manufacturing":[],"companionDiagnostics":[],"competitors":[],"timeline":[],"patents":[],"ownershipHistory":[],"trials":[],"biosimilars":[],"latestUpdates":[],"references":[],"tags":[],"ecosystem":[],"genericManufacturerList":[],"offLabel":[],"developmentCodes":[],"aliases":["Calcium Channel blocker or NG"],"phase":"marketed","status":"active","brandName":"Standard medication for variant angina","genericName":"Standard medication for variant angina","companyName":"Seoul National University Hospital","companyId":"seoul-national-university-hospital","modality":"Small molecule","firstApprovalDate":"","aiSummary":"Calcium channel blockers relax coronary artery smooth muscle to prevent vasospasm and improve blood flow in variant angina. Used for Variant angina (Prinzmetal's angina), Angina pectoris prevention.","enrichmentLevel":3,"visitCount":1,"trialStats":{"total":1,"withResults":0},"verificationStatus":"verified","dataCompleteness":{"mechanism":true,"indications":true,"safety":true,"trials":true,"score":4}}