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Unfortunately, studies on this topic have mainly focused on normalising serum B12 concentrations with oral supplementation and should be interpreted with caution since the specific goal of treatment in symptomatic B12 deficiency is alleviating symptoms, and NOT to normalize B12 concentrations in the blood
In addition, vitamin C also contributes to normal collagen formation for the normal function of skin
Vitamin B6 is needed for nerves as well as for creating chemical fibers in the body
Yes, B12 injections have an excellent long-term safety profile
A study in an academic publication called (appropriately) AMINO ACIDS, demonstrated that branched-chain amino acids along with two specific amino acids, glutamine or proline, restored collagen synthesis after UV exposure
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