Background. Vitamin B12 is an essential water-soluble vitamin that is commonly found in a variety of foods, such as fish, shellfish, meat, eggs, and dairy products. Vitamin B12 is frequently used in combination with other B vitamins in a vitamin B complex formulation.
Gas, bloating, intestinal cramps, and diarrhea are common effects of eating garlic, especially if you are sensitive to it. The supposed health benefits of garlic and the common myth that garlic is good for you does not apply if it makes you sick.
Broccoli, Brussels sprouts, cabbage, and kale are also high in raffinose so they can cause gas and bloating. But they're also high in vitamins, minerals, and antioxidants so they're a good part of a healthy diet. Your digestive system will adjust over time so start with smaller portions and work up.