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Description
When taken sublingually (under the tongue), liquid B12 gets absorbed directly into your bloodstream through the mucous membranes, skipping the digestive system altogether

One of our patients with an autoimmune disease had difficulty walking down the stairs due to joint stiffness and reduced blood flow

Am J Physiol Gastrointest Liver Physiol 267: G1087G1093, 1994

Urology 157 , 8592 (2021)
