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The final step converts N-acetylserotonin to melatonin via hydroxyindole-O-methyltransferase (HIOMT)

Iran J Pharm Res 11:481493 Wang S, McClements DJ, Lan Q et al (2025) Fabrication of composite hydrogels by sonication-assisted assembly of okara cellulose nanofibers and guar gum: unraveling structure, properties, and tofu quality enhancement

Injections may be discussed for more body-wide effects, but the route should be clinician-led

By participating in these metabolic processes, B12 helps ensure that the body has a steady supply of energy to support various physiological functions and activities

Is vitamin B12 deficiency common in vegetarians or vegans

Vitamin D : Regulates immunity, bone health, and mood