Sentinel Vitamin B12 is a dietary supplement containing 100mcg of Vitamin B12 per tablet, with 100 tablets per bottle. This essential nutrient supports red blood cell formation, DNA synthesis, and proper nervous system function while helping maintain healthy energy levels. Vitamin B12 is particularly important for vegetarians, vegans, older adults, and those with absorption issues as they may be at higher risk of deficiency. The supplement comes in an amber-colored bottle to protect the contents from light degradation. The 100mcg dosage is suitable for daily supplementation to help maintain adequate B12 levels when taken as directed. As with any supplement, consult with a healthcare provider before starting use, especially if you have underlying medical conditions or are taking other medications.