It is accumulative, so it usually gets a little harder each time. For me, it was the fatigue. I would be wiped out for 2 days after, than I would feel better.
Work hard to stay hydrated.

Flavored water is just fine, once the chemo started affecting my taste, I would add the flavored drops to the water, worked well to offset the metallic taste.

Maybe flavored water is as good as just plain water, I don't know. Maybe someone else does. I would think so.

I knew if I did flavored water first, I would never be able to drink just plain water. There was a time I hated water so I started with one glass a day of water with ice cubes so I really didn't have to tastes water using a straw, then added another glass every week. It is incredible what you can learn to like if you force yourself. Ice water tastes better than room temp water, now I prefer room temperature . Good luck.

Going to try that. Thought maybe I can try to add fruit at first and hopefully make it a habit. Would love to get to the point it's my preferred drink, I know it's healthier! Thanks Barbara. 🩷