I struggled for the first 2 months, I had so much nausea. It hasn't done me any harm in the long run and I can chug drinks now, hooray. I drank through the night too, @Arabesque Told me to do it too. Low calorie ice pops and warm drinks helped me through it- Oxo, Bovril [ also called beef tea ] and Ribena sugar free blackcurrant cordial are the English brand names I found helped me most. Tomato juice was a wonder drink that helped turn me around. It was 47 cals for 200mls and tasted great with hot sauce. Dont be afraid to try anything, good luck