Just to be clear.
Magnesium does not need to be taken with vitamin D. Magnesium is water soluble, vitamin D is not. Vitamn D is long lived in the blood (half life = 2 months). As long as vitamin D is sufficient (i.e. > 30 ng/ml - ideally 50-70 ng/ml), there is always plenty of vitamin D to work with magnesium. It is true that magnesium is needed to 'activate' vitamin D. So magnesium is typically the limiting nutrient. Just be sure you are not vitamin D deficient.
Regarding curcumin. Curcumin does not interefere with TKI's. It facilitates TKI action. I don't know where your 'oncologist' got that information - it's wrong. I would be very interested in reading anything anyone can find that suggests Curcumin interferes with TKI's. Curcumin 'helps' TKI's do their job:
However, Curcumin can be a potent iron chelator. This means that iron can be bound up and removed leading to anemia.
Curcumin does not last long in the blood - it is metabolized very quickly. I suspect this may be what your oncologist was referring to when mentioning 'curcumin & red blood cells'. I continue to take Curcumin despite this fact because it's benefits are clear to me and outweigh the downsides.. As long as one is not anemic because of iron deficiency,, Curcumin is good for you. Many of us, in fact, have too much iron! (meat eaters), especially men. The chelating action of Curcumin as mild as it is, may actually be useful. See link here:
Nevertheless, I do not take Curcumin when I eat iron rich food or when taking an iron supplement I am borderline anemic and I still take Curcumin. Attacking CML any way I can is more important to me. As long as hemoglobin and hematocrit are normal (which they are for me), I'll continue to take Curcumin. In fact, even if below normal, I'll still take Curcumin!
Regarding 'black and blue' bruising. If bruising occurs and it coincides only when you take Curcumin - stop taking Curcumin. Usually, the anti-coagulaton effect of Curcumin is not sufficient to cause bleeding, but if taken along with other powerful anti-coagulants such as Coumadin and aspirin, Curcumin can certainly contribute to this. However, preventing blood clots can be a benefit of Curcumin (anti- heart attack) in the same way doctors often suggest taking a baby aspriin. Curcumin, like aspirin, is also a cox-2 inhibitor.