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A B12 shot is an intramuscular injection of vitamin B12 (cobalamin)
MELATONIN SYNTHESIS AND METABOLISM Melatonin Synthesis Melatonin (N-acetyl-5-methoxytryptamine) is synthesized within the pinealocytes from tryptophan, mostly occurring during the dark phase of the day, when there is a major increase in the activity of serotonin-N-acetyltransferase (arylalkylamine N-acetyltransferase, AA-NAT), responsible for the transformation of 5-hydroxytryptamine (5HT, serotonin) to N-acetylserotonin (NAS) (Figure 1)
1 While GHK-Cu is not FDA-approved to treat medical conditions, it is commonly used in cosmetic dermatology for skin appearance and rejuvenation
B12 testing is often performed indiscriminately as part of routine screening and can lead to unnecessary diagnostic and management quandaries
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