You can buy many forms of digestive enzyme supplements and they are considered to be safe when they are taken as recommended. It has been found that bromelain thins the blood, which means people with serious health conditions who are taking blood thinners should avoid it. On the flip side, blood thinning can be beneficial in the general population in terms of preventing heart attack and forms of stroke. However, we do not recommend that you take supplements specifically for this purpose. It’s recommended that you consult your GP before taking supplements to ensure that taking digestive enzymes are safe for you. You should stop taking them if you notice any bleeding. Or if you start suffering from difficulty breathing, nausea, light-headedness or any symptom that concerns you. Always read the label and be aware of any allergies that you have.