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Together, they form a synergistic multi-compound formulation commonly used in controlled scientific studies

Mol Pharmacol 71 : 769776

doi: 10.3390/biom11121827 31

PubMed CrossRef Schneider-Gold C, Gilhus NE

Older adults are also at a higher risk of B12 deficiency due to decreased stomach acid levels, which are needed to separate B12 from protein in the diet for absorption

The modulatory role of dynorphin and KOPs in the VTANAc pathway has been discussed in the section on allosteric modulation of the VTA
