My mom decided she knew what was best and started taking aspirin and ibuprofen together because she said that helped her arthritis.
She was having spells of weakness, and finally we called an ambulance after she fell. They got her to the hospital and the ER doctor determined she had blood loss from internal bleeding. She ended up needing three units of blood. The doctor did an endoscopy on her and it was fine. He said it was the aspirin/ibuprofen combination that had started the bleeding. She had vowed and declared that couldn't be the cause, but I knew better. We got the ibuprofen out of the house and she hasn't had another episode since.