Certain peptides, like BPC-157, can cross the blood-brain barrier when administered nasally, allowing them to interact with neurotransmitters and reduce inflammation in the nervous system
10.1038/ngeo685 Nat
Vitamin B12 injections, typically hydroxocobalamin in the UK, are evidence-based therapies for confirmed B12 deficiency, treating conditions such as pernicious anaemia and malabsorption syndromes
Nonetheless, certain critical limitations of MSC-based therapy remain and need to be overcome before widespread clinical application becomes possible [5]
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GHK-Cu is not an FDA-approved drug, and its use is strictly cosmetic in nature