Hello is it normal to have blood in your stool when you're taking new medicines such as aleve (naproxen) or mixing prescribed medicine with aleve (naproxen)?

NOT GOOD, stop Aleve (naproxen): Never, unless with a doctor's expressed advice, mix medicines. Aleve (naproxen) is an effective inhibitor of platelet function so it can make you bleed. Aleve (naproxen) can cause ulcers (anywhere in the GI tract), which can then bleed. Stop the Aleve (naproxen) at once, and seek medical attention now before a little bleed turns into a life-threatening one.