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Because while conventional medicine tends to rely on a strict hierarchy of evidence, I think that can sometimes be a bit well sluggish

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Personalized care plans are essential for effective Vitamin B12 therapy

In other words, if you're tired and already have normal levels of B12 in your body, drinking that energy drink probably won't make you feel any better

For individuals who often feel fatigued or lethargic, these injections can provide a much-needed boost

doi: 10.3389/fphar.2025.1602976 Received 30 March 2025 Revised 13 November 2025 Accepted 14 November 2025 Published 19 December 2025 Volume 16 - 2025 Edited by Bernd Rosenkranz, Fundisa African Academy of Medicines Development, South Africa Reviewed by Kacper Nijakowski, Poznan University of Medical Sciences, Poland Miriam Njoki Karinja, Science for Africa Foundation, Kenya Updates Copyright 2025 Mazur, Ndokaj, Salerno, Vallone, Ardan, Bietolini, Carrouel, Wilk, Sarig, Ottolenghi and Bourgeois