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Without adequate P5P, the AADC enzyme cannot function, creating a secondary bottleneck that halts serotonin production regardless of how much 5-HTP is available

A Japanese clinical review showed significant electrophysiological improvement in neuropathy patients treated with methylcobalamin (Tokuda et al., 2018)

doi: 10.3390/ijms25126697 150 MorandiSCHerzogELMunkMKreuzerMLargiadrCRWolfSet al

That brings us to the next section: the why

& Choi, D
