If oral B12 supplements are not raising your levels, sublingual or injectable B12 may be necessary to achieve therapeutic levels and start feeling better
A vitamin C injection requires Ascorbic acid in liquid form, a needle and a syringe
They also use different calibration methods
Best of luck in your recovery
Supplementary information Rights and permissions Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made
Who Is Penile Injection Therapy For