oral b12 vs injection Injections Vitamin Injections vs. Oral Supplements:

No known side effects : No scalp irritation or frustrating shedding phase

Most people notice improved energy within a few days to a few weeks, depending on how low their levels are and how their body responds to treatment

" Sadly I don't know the answer to that as I'm not medically trained

Headache Mild diarrhea Mild pain or redness at the injection site Nausea Serious or rare side effects Stop taking Vitamin B12 Injection and seek immediate medical attention right away if you experience any of the following: Allergic reactions, including angioedema, hives, and trouble breathing Signs of heart problems, including swelling, rapid weight gain, and shortness of breath Signs of hypokalemia, including muscle weakness, slow or irregular heartbeat Contraindications: This is not an exhaustive list of contraindications

mass-spectrometric identity confirmation is required to establish which of the two compounds is present in a given sample