I have had the chance to try Uppy! on my recent double flights to Washington DC. I am a flight attendant and on this particular shift I went to Washington and came back to London twice in 6 days. I normally drink 2-3 litres of water per flight to stay hydrated, this time I had Uppy! with me and popped a tablet in my water bottle at the beginning of the flight and another 4 hours later. I felt more energised and therefore less tired, I didn’t feel as thirsty as normal and Uppy! certainly does what it says on the box. I used Uppy! throughout and felt much better than when I drink water alone. I also used one during a gym session of workout and spinning and it is definitely worth a shot!
Carlo Di Carlo Longhaul flight attendant