B12 10,000% plus Extreme Energy will help you maintain good health for a lifestyle of exercise, rest, and healthy eating. Healthy eating helps you acquire the vitamins and minerals you need to develop a strong immune system. However, eating healthy is not always easy. That’s why Stacker2 has developed a new shot to help supplement what you may be missing in your daily diet. Stacker2 B12 provides 10,000% of the recommended daily values of vitamin B12.