I have tested a few different products I have tested a few different products. Some just added too much bitterness, and those where the taste was great were rather expensive. After testing Kaffn8 I knew that I found the product: neutral taste and a great price. In addition, it was a nice gesture to see a handwritten note on the invoice that came with the delivery.

Buying Kaffen8 was easy. Buying Kaffen8 was easy. I really find taking the liquid caffeine is very do able and does it's job to give me energy when I need it. The thing that I feel is lacking on the site is that they don't tell a person where they get the caffeine from, and whether it's been tested for toxins

Love this product! Love this product! It makes it easy to add a little caffeine to my bubbly water without adding sugar or other chemicals. And you cannot taste it! Easy to order and shipment was fast.

Nice little note included in my… Nice little note included in my purchase, was received quickly and exactly as mentioned on website. I think it would be cool if they had a loyalty program. Obviously a lot of us will be ordering over and over. Thanks so much!!

good job ordering from their website was seamless. arrival of product was good. It arrived in padded envelope, despite the bottle is plastic, seems it leaves vulnerability for puncture. a small box would have have been preferred. Overall though, experience was good.