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Subcutaneous administration in normal and metabolically dysregulated mice significantly inhibits NNMT activity in metabolically active tissues (adipose, liver, muscle), increases systemic NAD+ levels, enhances mitochondrial function, and improves energy metabolism

Nitric Oxide System Stupnisek et al

It is also not recommended for neonates and young infants due to known toxicity risk

Maintaining a delicate balance between inhibition and excitation is critical for normal brain function

These effects include cellular proliferation, resistance to cell death, increased motility and invasiveness, enhanced metastasis as well as increased angiogenesis [134]