Provitalize contains curcumin which is known to possess natural anticoagulant properties. This means it may have natural blood-thinning effect which varies among individuals. Under normal circumstances, this is beneficial for promoting blood circulation.
However, if your body is susceptible to blood-thinning effects (eg. undergoing surgery) or if you're on blood-thinning medications (eg. warfarin or heparin), it is important to inform your doctor your interest in/consumption of Provitalize.
As far as we write to the best of our knowledge, we are not medical professionals. Our opinions are for informational purposes only and must not be taken as substitute for professional medical advice.
Reference: https://www.ncbi.nlm.nih.gov/pubmed/22531131