Tricky. First of all, there are many designer drugs any of which could be in spice. Many are synthetically related to marijuana but have more effect on the cardiovascular system (which is why they, and not the original plant have been associated with rare deaths). Their pharmacology isn t studied, but, they aren t going to still be present at 6 days. The effects on the brain, PSYCHOLOGY, and cardiovascular system are still present. While strokes are associated with it (so rarely, maybe it s stroke is, and not strokes are), strokes are generally pretty obvious and don t generally do just dizzy . Cardiovascular damage could, psychological effects like panic/fear/anxiety certainly can. These need a small amount of evaluation and perhaps counseling or antidepressant most likely, drugs for heart failure very unlikely.