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Though not frequently used, the Schilling Test is performed to check how well a patient absorbs B12 within the intestinal tract

KLOW Dosage and Frequency Chart The standard KLOW protocol uses a 3.2 mg dose, or a 10-unit draw from an 80 mg KLOW vial reconstituted with 2.5 mL BAC water

Oral supplementation retains measurable activity in gastric-origin animal models, reflecting the peptide's natural stability within the gastrointestinal environment

The people who found closer to 50% in their urine probably had a slight vitamin B12 deficiency, and some of the vitamin was stored for later use

Recommendation: Start b12 supplementation immediately, independent of semaglutide use