Black beans in water without any special effects equivalent to drugs, eaten in moderation can provide the body with some of the nutrients needed.
Black beans, also known as black soybeans, winter beans, which contains protein, fat, dietary fiber and other nutrients, but also contains vitamin A, B vitamins, vitamin E, etc., as well as potassium, phosphorus, magnesium, calcium, iron, zinc, iodine, selenium, manganese, and other nutrients, eating in moderation for the human body to provide the required nutrients.
But black beans are just an ordinary food, does not have any special effects, and black beans in water if only drinking water is not eating black beans is more limited nutrient content, so you can eat black beans and water together.
It is recommended to eat in moderation, do not overeat, so as not to cause discomfort.