Blackberry is considered to be one of the low-calory berries: only 33 Kcal per 100 grams.

Blackberry contains a rich variety of complex vitamins & minerals such as PP vitamin, ascorbic acid, retinol, riboflavin, thiamine, tocopherol, pyridoxine & beta-carotene.

As for minerals, the most precious are phosphorus potassium, magnesium, calcium, manganese & natrium. You can also find cuprum, zinc & ferrum here as well.