Unstable angina

Was taking in to hospital on 4th September 2006 with unstable angina and on the 7th September 2006 had a pci + stent x1 to cx. drug-eluting stent and loads of medication so why do I still get the chest pains I get it more when lifting at work hope some can help thanks..


Medication I’m taking at moment for unstable angina    

Bisoprolol 10mg tab
Diltiazem hydrochloride 60mg 3 times a day
aspirin 75mg tab
lansoprazole 30mg cap
simvastatin 80mg tab  (at night)
clopidogrel 75mg tab
Isosorbide mononitrate 40mg tab twice a day
Salbutamol ventolin evohaler CFC free
Glyceryl trinitrate spray  15 min rule –then 999