After under going so many side effects with so many hypertensive drugs. I decided to research all of the ingredients in Nature's Answer,CardioNutriv Extract,all of the information was positive,so I decided to give it a try. The product works and I have been using it for about10 months.about 5months ago I discover that IHerbs sells Cardio Nutriv cheaper and the volume I buys allows me to take advagnage of the free shipping! I'm happy to say,I no longer take prescription drugs for my High blood pressure. I feel so delighted that all of the side effects I was experiencing with the high blood pressure drugs is behind me now. I will also add that my doctor is not please with my decision to use Cardio Nutriv,but he will admit that it is good that my blood pressure reading has gone from 175/95 taking Altenolol to 128/83{as of this review date}taking Nature.s Answer CardioNutriv Extract.