b12 pills versus injections Vitamin vs. Supplements: Which Works Best? B12 Injection vs. Oral Supplements:

Most dosage decisions are based on product format, skin sensitivity, health goals, and tolerance rather than gender alone

Absorption and Delivery Differences Oral NAD+ supplements must pass through the gastrointestinal (GI) tract, where enzymatic breakdown and variable absorption can limit how much NAD+ actually reaches circulation[8]

Sources of Active B12 Animal-based: liver, red meat, fish, dairy, eggs Fortified plant-based foods: cereals, plant milks Supplements: especially important for vegans or those with absorption issues Should You Supplement

If you opt for this one, you wont be getting nearly as much B12 as you think you are, because it will pass straight through your system with little absorption

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