why do i feel tired after b12 injection All the Time. I Need a Shot?: Shawn Veiseh, M.D.: Family Medicine feeling tired after b12 injections
Description
Many people feel more energetic and improved within a 2-3 days to a week
[PubMed: 5541346] 6
Absorption Issues from GI Conditions and Surgery Other health issues can throw up similar roadblocks to B12 absorption, making long-term injection therapy the only effective solution

As an alternative to FDA-approved branded products, where appropriate, a provider may prescribe a compounded drug, which is prepared by a state-licensed sterile compounding pharmacy partner
