Kvass contains alcohol, a lot of sugar and calories, and the purchased drink contains flavor enhancers and flavorings. Do not forget that kvass is a product of fermentation.
It is rich in yeast, and in large quantities the drink can disrupt the intestinal microflora, as well as cause bloating.
A harmless norm of kvass is 200-500 ml per day. You can drink kvass every day if you have no contraindications and do not drink the drink by the liter, and you are not worried about your figure.
