nuCaffeine Ultra | 94 Servings | Caffeine from Coffee Beans + Vitamin B3 + Electrolytes | Includes Handy to-go Tube | Transform Any Drink into an Energy Drink! | No Carbs, No Sugars, No Calories

To begin with, I do wish they had a version that was a bit more concentrated. I add this to my soda stream sparkling water drinks, and the volume of this I need to make a caffeinated drink sometimes lessens my drinks carbonation.Bubly used to make very concentrated caffeinated drops for the sodastream called "Bubly Bounce," for some terrible reason, they discontinued it. This is a great substitute for that for anyone who loves caffeinated sparkling water like me.I've replaced my morning coffee with caffeinated sparkling water for a couple years now, and I've felt so much better. No more kidney pain or stained teeth.It's amazing to have this for a boost of energy. You can add it to anything because it is truly flavorless. I tasted no bitterness.I love the size and design of the jug. It will last a long time and it's so cool and easy to pour. It shows me the company puts its customers happiness above all. Great product! Would love to see a more concentrated version. Wink. Wink.

Love this stuff! I add it to juice. So much cheaper than the energy drinks I was buying, and heavier in the long run too. Not to mention, I can adjust the “dose” to anywhere from about half a cup of coffee’s worth, to whatever I choose.Only time I have noticed any after taste was with straight water, and it was still tolerable. I add to herbal tea if I am out of juice, or to a “rehydration” powder (liquid IV, Gatorade, etc) if I am out of juice.

Does the job. Love that I can add it to anything. Somethings flavor is slightly altered depending on how much you use but not enough to matter.

This is a great product, I wish it could be purchased with an EBT card. I use it to caffeinate my soda stream drinks.

I bought this because two different manufacturers of caffeinated, sparkling, flavored water exited the market. Now, if I want sparkling, flavored water with caffeine, I have to add the caffeine myself, and this product allows me to do that.

Making your orange juice taste bad is a real super power. This is my second bottle, with both bottles I almost coughed up my gastric sleeve staples when I had the Harvard-y idea of taking a shot - straight. Nope, put your eyebrows back down, I can assure you it went badly wrong, furthermore I can assure you this wont happen ever again in my pre-dementia lifetime. This is now frowned upon in my home establishment. Next on the agenda, the color. I had no issues with the first turning yellow. I've had this newest order for a month or so and have just opened it maybe a week ago but when I went to take it this morning 7/3/24, it’s all yellow? I am gobsmacked and scared to take it now as this makes no sense.UPDATE: 7/15/24Guys, the customer service has been superb! I won't say what my resolution was as everyone's situation is different. But Michelle is the bestest! You guys, the woman sent me a hand-written note, like whaaaa? you find service like that much anymore and I applaud it (picture a heart emoji here)

Love this a lot, will be buying again.

This stuff works great! It has a slight...off flavor. Kind of like how a caffeine pill or advice tastes. Medical taste is guess? But it's not too over powering considering how well it works. I poor it in my sparkling water often in the morning when I don't feel like making coffee