im injection of b12 Methylcobalamin (Vitamin B12) B12 Shots vs. IV Infusions:

[19] Please keep in mind that everyones chemistry is different, and you may have an underlying health issue that adds risk to you reacting to selenium supplements, so I always recommend that you discuss any type of supplementation with your practitioner

High-dose Vitamin B12 May Improve ALS Prognosis if Started Early, Study Suggests Written by | Treatment with ultra-high-dose methylcobalamin, the physiologically active form of vitamin B12, may improve the prognosis of patients with amyotrophic lateral sclerosis (ALS) who receive it a year or less after symptom onset, a long-term study of Japanese reports

Pharmacokinetic Advantages Orforglipron's pharmacokinetic profile represents a decisive advance over all existing oral GLP-1 formulations and, in several respects, confers advantages even over injectable GLP-1 receptor agonists

While vitamin B12 itself doesnt directly cause gas, some factors related to its intake might contribute to digestive discomfort: 1