uterine bleeding disorder
Aspirin should be avoided if you have a stomach (peptic) ulcer, haemophilia or other bleeding disorder, or an allergy to aspirin or to other non-steroidal anti-inflammatory drugs (NSAID).
It controls the balance between blood clotting and bleeding, and abnormalities affecting VWF can lead to health problems such as bleeding disorders and heart attacks.
Therefore, people with bleeding disorders or taking anti-coagulant medication should consult with their doctor before taking fish oil supplements.