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Before taking this medicine, let your doctor know if you have kidney stones or any other kidney problems, as it can cause an increase in the amount of calcium in blood or urine
pharmacy on an ongoing basis without interruption
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By taking Methylcobalamin B12 injections, you can help prevent B12 deficiency, which can lead to symptoms like fatigue, weakness, and cognitive impairments
Last reviewed: May 30, 2026 Last updated: May 30, 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
Immediately following the injections, you may experience: Minor redness generally lasts no longer than 1 hour, and for most patients, this dissipates before they leave the office (15 minutes) Swelling generally increases for the first 24 hours, before resolving within 48-72 hours
