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A 2022 scientific review published in the National Library of Medicine confirmed that nasal delivery of therapeutic peptides is a non-invasive and fast-acting method that can effectively bypass the blood-brain barrier while minimising systemic exposure
S2CID 85414084
No good word has come out yet on the B12 patch
There are no randomized, placebo-controlled efficacy data in humans
Q4: Does it leave an oily residue
Neuroprotection Early studies suggest it may aid in protecting the brain and nerves after injury
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