b12 injections not working chronic fatigue Feeling worse after Injection: Answering concerns Updated Booklet: Vitamin B12 &

Alcohol swabs, clean gauze or cotton balls , and optionally a band-aid

Regular diet includes animal products

All Xcel Peptides products are intended strictly for laboratory and scientific research use only

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

Injections bypass the stomach, which is why we sometimes recommend them as part of our geriatric medical services

Conclusion Finding the best location for a B12 injection is crucial for correct administration