really tired after b12 injection I Feel All the Time. Do I Need a Shot?: Shawn Veiseh, M.D.: Family Medicine b12 injection makes me sleepy
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10.1136/bmj.l4898 [DOI] [PubMed] [Google Scholar] Tanaka N., Yamazaki Y., Yamada H

Several medically supervised weight loss programs use vitamin B12 injections

I have IBS & microscopic colitis which can make a person unable to absorb B1 in the stomach
Anti-fungal medications may interact with birth control Most anti-fungal medications dont affect birth control effectiveness
