this is due to riboflavin and its metabolites, and it is a harmless effect
A licensed pharmacist (Licensed Community Pharmacies Directory | College of Pharmacists of British Columbia) with over 20 years of experience in medication management, specifically medication safety, she has reviewed the information for accuracy and completeness
Efficacy of supplementation with methylcobalamin and cyancobalamin in maintaining the level of serum holotranscobalamin in a group of plantbased diet (vegan) adults. Experimental and Therapeutic Medicine 22(3) (2021): 17
The consultation usually includes: A discussion about symptoms such as fatigue or low energy A review of medical history and previous vitamin treatment Advice on vitamin B12 and travel health Administration of the injection if suitable The hydroxocobalamin injection is usually given into a muscle in the upper arm and typically takes only a few minutes
But I want to be clear that waning immunity is not the same as saying these vaccines have failed, because in fact, we want to give vaccines to prevent severe disease and death, and thats what theyre doing