This product contains the ingredient Acacia rigidula which has been found to be a source of stimulant amines and amphetamine-like compounds. Some supplement products containing Acacia rigidula have been found to contain a greater amount of these stimulant compounds than would be expected from the plant parts alone (21078,29823). There have been several reported cases of tachycardia and palpitations and one report of cardiac arrest in patients taking supplements containing Acacia rigidula and other stimulant ingredients (21079). Advise patients not to take this product or other products containing Acacia rigidula.