Definitely ask your dr. before doing something like this. As everyone's response to alternative options - I am not sure she is suggesting moving to alternative medicine but rather taking a supplement to help bolster her mom's immune system prior to her next chemo. (this in my opinion is not related to alternative medicine as a fair amount of the population takes vitamin D, C, etc... I would push for maybe B12 (supports blood) and upping her protein in the form of a shake or something mild but nutritious that she can eat (sip on) over the course of a few hours - hugs.