You might wonder how a pill works if you lack intrinsic factor: at very high oral doses, a small amount of B12 can be absorbed directly through the gut wall via passive diffusion, bypassing the need for intrinsic factor entirely [1] [3]
Zhou X, Xia X, Li L, Ye YMYZJ, Chen Q, Ke M, Cui Q, He Y, Chen Y-T, Lin S-S, Liu W, Wang J (2025) Evaluation of heavy metals and essential minerals in the hair of children with autism spectrum disorder and their association with symptom severity
Supplements that claim to contain only R -lipoic acid are usually more expensive, and information regarding their purity is not publicly available (109)
By Martin M Rated 5 out of 5 I ordered on Friday evening and on Monday at 12:30 the package was with me
It's estimated that between 10 percent and 30 percent of people older than 50 produce too little stomach acid to release B12 from its carrier protein in foods
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