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However, B12 shots can lead to side effects including: - Headache - Dizziness - Diarrhea - Skin rash and itching - Nausea and vomiting - Fatigue - Swelling and tingling sensation Additionally, excess vitamin B12 can also result in rare but severe allergic reactions also known as anaphylaxis

They have very good quality control

In order to prevent degradation of the materials used during the preparation of the liposomal formulation, it is advantageous to purge all solutions with an inert gas such as nitrogen or argon, and to conduct all steps under an inert atmosphere

But advocates are now pushing to have those limitations reversed in some cases

It sits within a broader strategy that may include hormone optimization, lifestyle guidance, and other supports