As people have mentioned, everyone reacts different and people are on different dosages. I did 4 rounds of AC, two weeks between treatments. The fatigue was terrible, I had to delay the last treatment because I was so weak. Now I am on my 5th week of 12 weekly dosages of Paclitaxel and having minimum side effects. I am grateful that side effects have been minimal, but now I am worried that maybe the chemo is not working. I meet with Dr next week and that is one questions I will be asking him.
I have used Carnation Instant breakfast also. I did not like chocolate or vanilla by them self so would mix one chocolate and one vanilla together and added Whey powder to increase protein. To increase calories and change flavor I would add fruit and/or yogurt.