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La Belle Vie Clinic in Seattle follows a test-first, evidence-based protocol for vitamin B12 treatment aligned with NIH and AAFP clinical guidance

Manufactured in a cGMP facility NSF (NSF International has tested and certified dietary supplement products to meet specific safety and quality requirements)

S2CID 25738026

Occasionally, signs of acute toxicity may be absent for 1248 hours following administration, after which a critical phase may develop, characterised by pulmonary oedema, vasomotor collapse, cyanosis, acute hepatic failure, coma, and death of the animal

That is clinically meaningful for a specific subset of patients