Ibuprofen

So, I learned about this quite a while ago and I feel like it's worth sharing.
If you're ever in a situation where you need to pick Ibuprofen or Aspirin. Always go with the Ibuprofen.

Why? Well. Both of these pills work as inhibitors against the enzyme cyclooxegenase (COX). COX converts arachidonic acid to prostaglandin H2 (PGH2) and this is responsible for a whole SLEW of reactions that happen in your body which include:

•inhibiting blood clotting
•promoting blood clotting (yes, it does both --> yin-yang balance effect)
•uterus contraction
•mediating pain perception
•bronchoconstriction

The difference between these two drugs, however, is that Ibuprofen is a Reversible  Inhibitor and Aspirin is an Irreversible inhibitor.  So long after you are done needing aspirin for it's pain-killing properties, it is still working on the COX enzyme in your body, rendering this regulatory enzyme useless until it dies, whereas ibuprofen will eventually just release it and let your body carry on in its natural course.