There are risks and possible side effects with most meds, but you would need to know why the meds were prescribed in the first place to evaluate if the benefits outweigh any risk by taking it.
I was prescribed 150mg of dispersable aspirin daily for cardiovascular reasons and to counteract any digestive tract problems I also take the proton pump inhibitor lansaprazole.
To get technical, aspirin slows the production of sticky platelets in the blood and therefore reduces the clotting factor, and for me, after several TIA's some years ago, aspirin is a risk worth taking.