I suggest we focus on the science.
For example, consider the botanical ingredient present in product B in the 2nd highest concentration: epimedium (horny goart weed).
I've found a considerable amount of evidence that this single ingredient increases proliferation and differentiation of stem cells in 3 major organ systems: brain, heart, bones. Such a broad spectrum rejuvenating effect on stem cells in 3 unrelated organ systems is quite remarkable. I organized the pubmed citations below. It appears that the fractionated component Icariin is largely responsible.
Epimedium promotes osteoblastogenesis in bone marrow stromal (stem) cells:
PMID: 19501202
Epimedium enhances osteogenic differentiation of bone marrow stromal (stem) cells:
PMID: 22009597
PMID: 16398272
Epimedium promotes the proliferation and differentiation of neural stem cells
PMID: 19703337
US Patent: US 2010/0317605 A1 (Dec 16, 2010)
Epimedium activates endogenous stem cells:
PMID: 19548445
Epimedium (Icariin) stimulates adipose-derived stem cells to differentiate into cardiomyocytes:
PMID: 20563742
Epimedium (Icariin) induces embryonic stem cell differentiation into cardiomyocytes
PMID: 21181238
PMID: 18484897
PMID: 15780198
PMID: 17883938
PMID: 17985362
PMID: 18423597
PMID: 18484897
Epimedium (Icariin) enhances differentiation of bone marrow stromal (stem) cells
PMID: 18236786
PMID: 16398272
PMID: 20669681
Epimedium (Icariin) accelerates proliferation of bone marrow stromal (stem) cells
PMID: 17326409
Edited by Louis, 21 December 2011 - 09:59 PM.