Well, foremost, this is not some quick fix
These may include: Nausea and stomach upset Diarrhea Constipation Injection site redness or swelling Itching Headache Dizziness Blood clots Swelling In rare cases, some people may experience an allergic reaction to vitamin B12, which can cause symptoms such as hives, difficulty breathing, and swelling of the face, lips, tongue, or throat
View the full Certificate of Analysis here: A 5mg vial can be especially useful when a laboratory wants a smaller, clearly defined format for controlled analytical work and early-stage pathway comparison
Without intrinsic factor, oral B12 cannot be absorbed at all injections are the primary treatment
Gentle on the stomach, and have a naturally sweet taste.*
The effects vary depending on the type of injection