While Vitamin B12 tablets are readily available, easy to use (you just pop it in your mouth!), and cheaper, the rate at which the vitamin absorbs in tablet form is relatively slow
Most of the supporting research comes from animal studies and patient experience
Filatova E, Kasian A, Kolomin T, et al (2017) GABA, selank, and olanzapine affect the expression of genes involved in gabaergic neurotransmission in IMR-32 Cells
Anastomoses between two defects in the corresponding tissues (i.e., in esophagus and skin (Skorjanec et al., 2009), duodenum and skin (Skorjanec et al., 2015), colon and skin (Klicek et al., 2008), colon and bladder (Grgic et al., 2016), and rectum and vagina (Sikiric et al., 2020a)