The Vitamin Shoppe Vitamin B12 1000 mcg

Our assessment

The evidence shows that Vitamin B12 is essential for your body’s basic functions, but most people get enough from their diet. For those with a deficiency, supplementing with 1000 mcg can be an effective option. Data on this specific product is limited, so our assessment relies on general B12 science [NIH ODS].

How it works

Think of Vitamin B12 as a key metabolic worker — it helps your body convert food into energy, supports the formation of red blood cells, and maintains your nervous system. Without enough B12, you may feel tired or experience nerve issues [NIH ODS].

Safety profile

Data on adverse events for this specific product is not available. In general, Vitamin B12 is considered very safe, as it is water-soluble and excess amounts are excreted. No side effect reports for this specific product were found in FDA data [FDA data].

Our recommendation

If you suspect a deficiency due to a vegan diet, age, or digestive issues, a 1000 mcg B12 supplement is a reasonable choice. However, check with your doctor to confirm your levels first. For most people, a standard multivitamin or dietary sources are sufficient [NIH ODS].

Supplement labels contain several key sections regulated by the FDA:

• Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
• Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
• % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
• Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
• Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.

Source: FDA Dietary Supplement Labeling Guide