It circulates endogenously in plasma, saliva, and urine, where it works as a signalling molecule rather than a structural protein fragment
[1] Other rare side effects noted (mostly in older literature or high-dose use) include: polycythemia vera and peripheral vascular thrombosis in patients receiving repeated injections (though these associations are not well understood, they were listed in prior product literature as possible adverse events)
Beneficial effects of cyclosporine A in combination with nortriptyline on germ cell-specific apoptosis, oxidative stress and epididymal sperm qualities following testicular ischemia/reperfusion in rats: a comparative study
Its ideal for users seeking a specific outcome without affecting hormone levels
I'm finding now, as time goes on, that more and more women are being diagnosed with vitamin B12 deficiency in perimenopause and menopause, so just be aware of this one