I was reading through this post and didn't see anything worth commenting on that hadn't already been covered. I have a pet peeve about people not understanding how aspirin really works. I think this stems from a gross misuse of the drug in my county.
Could you clarify what you meant by aspirin for your red blood cells? Aspirin in no way affects red blood cells in number or function. The only way it would is if it is causing internal bleeding.
Aspirin acts primarily by actively inhibiting cyclooxygenase. COX-2 specifically prevents the production of prostaglandins which cause the pain sensation and causes inflammation and it prevents platelets from clogging as effectively.
COX-1 thickens your stomach lining. Unfortunately it inhibits that one too. Other prostaglandins cause platelets to stick together. When it binds to these it causes platelet inhibition.
While there are still a lot of questions concerning aspirin and high blood pressure, cialis is still a better alternative on cycle. Regardless, aspirin doesn't touch red blood cells except to lower the probability that they may clot together and form a blockage.
Here is an article for justification:
A prospective study of aspirin's effect on red blood cell loss in cardiac surgery. - PubMed - NCBI