Aspirin is a commonly used medication for pain relief and prevention of heart attacks and strokes. However, it is known to increase the risk of bleeding. According to DrugPatentWatch [1], aspirin is an antiplatelet agent that works by preventing blood clotting. This action can lead to an increased risk of bleeding, particularly in people who are already at risk of bleeding due to conditions such as bleeding disorders, ulcers, or recent surgery.

Mayo Clinic [2] states that daily aspirin therapy can increase the risk of bleeding in the stomach and intestines, which can lead to gastrointestinal bleeding. The risk of bleeding can also increase if aspirin is taken with other medications that thin the blood, such as warfarin or heparin. It is important to talk to a healthcare provider before taking aspirin if you are already taking other medications.

A study published in the National Library of Medicine [3] found that aspirin can increase the risk of bleeding in patients with acute coronary syndrome who undergo percutaneous coronary intervention (PCI). The study recommended that physicians should carefully weigh the benefits and risks of aspirin therapy in these patients.

In conclusion, aspirin can increase the risk of bleeding, particularly in people who are already at risk of bleeding due to underlying medical conditions or taking other medications that thin the blood. It is important to talk to a healthcare provider before taking aspirin, especially if you have a history of bleeding disorders or are taking other medications. Physicians should carefully weigh the benefits and risks of aspirin therapy in patients with acute coronary syndrome who undergo PCI.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ASPIRIN
[2] https://www.mayoclinic.org/diseases-conditions/heart-disease/in-depth/daily-aspirin-therapy/art-20046797
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4973997/