Coagulation: the clotting action of blood.
Coagulation can be impacted by some medications, including aspirin. That's one reason medications that impact coagulation are often temporarily discontinued before surgery. Another important issue is not combining too many medications that impact coagulation because they can trigger dangerous bleeding.
If you want to check to see if your medications can impact coagulation, you can check them out for yourself, then check with your doctor. We have information about many medications in our:
For more terms, see our Migraine and Headache Glossary.
Medical review by John Claude Krusz, PhD, MD.