A 70-year-old man suffered from angina and had a drug-eluting stent implanted in a coronary artery a few months before. He was taking aspirin, clopidogrel, atorvastatin and several other drugs. 

a) Why is he taking aspirin and clopidogrel? (7 marks) 

b) What adverse effects should the patient taking aspirin and clopidogrel be told? (3 marks) 

c) What class of drug can be taken to reduce the risk of serious adverse effects arising from aspirin? How does it work? 

(2 marks) 

d) Could omeprazole be added to his current regimen? Please explain your answer. (3 marks) 

e) Why is he taking atorvastatin? (3 marks) 

(f) What are the mechanisms of action of atorvastatin? (2 marks)