I've been on it for over 5 years with zero problems, my main advise is to drink, drink, and drink some more, doesn't matter what, tea, coffee, water, sugar free squash, I even drink diet pop. It works by holding the excess sugars in your wee, so can make you more susceptible to UTI's. Keto diets aren't advised, but low(er) carbs are ok (due to the risk of DKA)