What is in the composition of this fibre and what is buckthorn bark for? — Siberian dietary fiber with rye 350 g - Siberskaya Kletchatka

According to the card, the composition is: rye grain husk, wheat grain husk, Kuril tea, apple and a herbal blend (oregano herb, yarrow herb, dill seeds, buckthorn bark, dandelion root, plantain leaf, nettle leaf). What the buckthorn bark is for, the card does not explain. Per 100 g: protein — 8 g, fat — 3 g, carbohydrates — 5 g, 80 kcal (340 kJ). In pregnancy and breastfeeding, a doctor should be consulted before use.

General information (not a manufacturer's claim): buckthorn bark is known for its laxative action; people with a sensitive bowel and those taking medicines are better off discussing the product with a doctor.