Castilhos, L
Nature 381 , 272 (1996)
It is used in soft tissue repair research, including tendon, ligament, and muscle regeneration
This combined therapy is especially useful for adults and elderly patients
But because there arent published human clinical trials on KPV, we simply dont yet know how this translates to humans, what dosing ranges are best, or whether it's safe over the long term
The correct approach: Test serum B12, MMA, and homocysteine not just serum B12 Use the functional cutoff of 500 pg/mL for optimal status, not the labs lower limit of 200 pg/mL Identify the cause diet, malabsorption, medication, or autoimmune Match the supplementation protocol to the cause and severity Retest to confirm response, and continue monitoring if the underlying cause persists If youre over 50, vegan, taking metformin or PPIs, or experiencing unexplained fatigue, brain fog, or neuropathy get tested