evidencegaps
Primary study · included by 1 review

Vitamin B12 supplementation orally and intramuscularly in people with obesity undergoing gastric bypass.

Ramos 2021 · Ramos Rafael Jacques, Mottin Cláudio Corá, Alves Leticia Biscaino, et al. · Obesity research & clinical practice · 2021

Included by

Efficacy of sublingual and oral vitamin B12 versus intramuscular administration: insights from a systematic review and meta-analysis.
Non-Cochrane · intervention · 2025 · cited as Ramos 2021 · Table 2; References

The review does not say which of its outcomes this study informs.

1 including review in total.