you feel drained from a blood test where they take 20ml of your blood?
strong placebo is strong.
if your levels are all in range there is absolutely ZERO point in donating blood btw.
lowering RBCs is when theyre IN RANGE is NOT A GOOD THING.
and no, its not a foundation, because your body instantly senses below average RBCs and starts producing more.
and the half life is around 8 weeks or so IIRC so its not gonna last long anyway