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B12 is essential for maintaining healthy nerve cells and can help in forming red blood cells, leading to improved energy levels

What you can upload A copy of your current prescription (PDF or photo) A medical record or chart note from your prescribing provider showing the active medication and dose A pharmacy printout or label from your most recent fill A recent lab result with your provider's name and the medication noted Existing RxPepsDirect patients on Sema or Tirz: we'll auto-match your email to your prior approved visit

Rather than directly supplying NAD+ precursors (like NMN or NR), it works by blocking an enzyme that consumes nicotinamide, theoretically preserving the substrate pool for endogenous NAD+ production

If not recently tested, we may order a blood test to confirm low B12 levels