My husband and I love this product! I traded my large sugary cappuccinos for caffeinated water, and my husband drinks less sodas now. I lost a few pounds, and now we both drink more water, as we all should. This is much healthier than the sugary options, or those Monster drinks that put some people in the hospital. Of course you must be careful when measuring, so this is great for responsible adults. I recommend starting with a minimal dose & if you still don’t feel awake, slightly increase it the next time. That way you’ll find the right dose without overdoing it. Thanks, Liquid Caffeine!!