There are several other brands with similar ingredients - but this is the only one I've found that does not contain fructose, or high-fructose, or other sugars. Instead, it is sweetened with Stevia Leaf Extract, and natural fruit flavors. It tastes great, with no blood sugar increase. Combining L-Arginine with L-Citruline is clinically proven to improve blood flow - resulting in numerous benefits for heart, brain, and other bodily systems. All I know is I take it every day and feel great!This is really good. Great flavor and quick results. Getting to the age I am (60) I don't recover from a work day as quickly as I used to. This helps the next day pain to stay away. Working in Diaster Relief makes for lo g days of hard work. This help me bounce back much more quickly. I recommend this to anyone!!. ??. Two thumbs up absolutely.Product arrived on time & was packaged to prevent damage. This is where the good part of the review ends.This product has a very strange oily yellow film that coats your glass when mixed with water. It does not matter whether the water is room temp or refrigerated. There is a strange after taste as well. I made the request through Amazon to return this product within the required timeframe. The provider company never sent me the needed information to return the product... Stuck with over $100 in product that tastes & looks awful & a provider company that will NOT respond to my request. My Lyme disease (LLMD) doctor had suggested to try Arginine Infusion as the price was much less... GUESS YOU GET WHAT YOU PAY FOR>>>>>>> I will also be calling my Physicians & letting them know about the poor quality of this product.For the past three years, I have always used Synergy ProArgi-9+. It tastes great & dissolves easily in whatever temp water without any oily film.Just received my order from Amazon as I am writing this review.I have been using this product for a few months now and I'm incredibly happy with the results. It has lowered my blood pressure more effectively than anything else I have tried in the past. I highly recommend this product.I haven't noticed any difference in my energy level so far and I've almost finished my first jar. I think it's good for me and will update this review if things improve before my order runs out. I did notice that adding the powder to the water kicks up a choking cloud of dust, so be sure to add the powder to the glass before the water.I have been taking arginine infusion for several years. I have tried other brands but the quality is not as good and I don't get the same results.Seems to be working as advertised. Was looking for non-drug solution to lower blood pressure and I am back to normal with this. Really enjoy the slight not-too-sweet berry flavor as well.Works great