can you take vitamin d and b12 injection together Who Should Injections Why? Vitamin B12 and Vitamin D:

(PubMed) Zhang ZW, Patchett SE, Perrett D, Katelaris PH, Domizio P, Farthing MJ

I recently had 5 days worth of the b12 injections and have been prescribed to have them every 3 months alongside folic acid

De Ita JR, Castilla-Cortzar I, Aguirre GA, Snchez-Yago C, Santos-Ruiz MO, Guerra-Menndez L, Martn-Estal I, Garca-Magario M, Lara-Daz VJ, Puche JE, Muoz U

This approach mirrors how longevity-focused clinicians use other interventions, prioritizing a sustained, low-amplitude signal over a short, high-amplitude intervention

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Besides the indications listed above, it's best to confirm if the patient hasn't responded well to other forms of treatment