In some cases, B12 deficiencies occur because the digestive system is unable to absorb the vitamin
When To See a Doctor Promptly Seek medical advice sooner if elevated vitamin B12 is accompanied by: Unexplained weight loss, night sweats, or fever Persistent or unusual fatigue, bruising, or bleeding Yellowing of the skin or eyes (jaundice), dark urine, or pale stools Ongoing or severe abdominal discomfort Any symptom that feels unusual or is getting worse What Your Results Dont Tell You The results may not reveal: A high vitamin B12 level doesnt necessarily mean you have too much B12 stored in your tissues
16,17 It is unclear whether B12 is absorbed via the oral mucosa or in the small intestine with sublingual administration, and research into this question is scarce
If foam clears in 5 minutes, solution may still be fine
Purity is useful, but not complete A high HPLC purity figure should be read with the chromatogram, COA, and identity-support documents
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