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ISBN 3-540-33047-X
Last reviewed: May 12, 2026 Last updated: May 12, 2026 Written by: Jay Hastings , CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations
Vitamin B12 is important for proper digestion, and a deficiency can lead to digestive issues such as diarrhea, constipation, and loss of appetite
Can I use regular sterile water instead of bacteriostatic water
B12 injections deliver the vitamin directly into your muscle tissue, allowing for nearly 100% bioavailability
The FDA placed it on a prohibited-compounding list in 2023, and WADA bans it in competitive sport
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