Yes, you can drink buttermilk. It is a healthy, probiotic-rich dairy beverage that supports digestion and overall health. It contains beneficial bacteria, vitamins like B2 and B12, calcium, and protein, and is commonly consumed in many cultures. Drinking 1-2 glasses a day is considered safe and beneficial, though it is advisable to consume it in moderation due to its natural sugars and calories. Buttermilk can be drunk straight or diluted and used in various recipes, including refreshing drinks with spices or fruit smoothies. It is also easier to digest than regular milk for some people due to its lower lactose content and probiotic properties.