How should this extract be taken, and what should you watch for when using it for the first time? — thick extract of common aspen bark 110 g-Visterra

Two measuring spoons (2 g) of the extract are dissolved in 100–150 ml of warm water and taken 3 times a day, 20–30 minutes before meals. After opening, keep the jar in the refrigerator and use it within 30 days.

The course lasts 2 weeks: the extract is intended for short courses, not for continuous daily use over months. This is typical of concentrated plant extracts: a break is usually taken after a course.

When you use it for the first time, watch how your body reacts for a day or two. The thick extract contains tannins and bitter substances, which may cause discomfort in people with sensitive digestion. The label says to take the extract 20–30 minutes before meals; if taking it this way causes discomfort, stop and seek a specialist’s advice.

If unwanted reactions appear while you are taking it — stomach discomfort, allergic symptoms, unusual sensations — stop using it and consult a specialist. People taking medicines should check compatibility with their doctor in advance, as plant phenolic compounds can interact with some medications.

The product is not a medicine and is not intended to treat or prevent disease.