b12 injections are What Is Injection What's all the Buzz About Vitamin B12 Shots? Why Do You Need B12

They answered all of my questions

[DOI] [PMC free article] [PubMed] [Google Scholar] 7.Mouchiroud L, et al

Having balanced levels of vitamin B12 helps you feel happier and healthier

IV therapy bypasses the digestive system, allowing for faster and more complete absorption, which can be especially helpful for individuals with poor gut health or nutrient absorption issues

Application protocol: Product: Hydrocortisone 1% cream (available at any pharmacy without prescription) Timing: Apply after noticing the reaction, not before injection Amount: Thin layer covering the entire affected area plus a 1-centimeter margin Frequency: Twice daily (morning and evening) until the reaction resolves Duration: Typically 2 to 5 days, do not use for more than 7 consecutive days without medical guidance Important: Do NOT apply hydrocortisone before injection, as it can interfere with medication absorption For reactions that do not respond to 1% hydrocortisone, a healthcare provider can prescribe stronger topical corticosteroids (triamcinolone 0.1% or betamethasone 0.05%)