What does Cegrin work for?

To the best of my knowledge, there is no drug on the market called Cegrin. A product called Cegrin (or Cegrip) is a dietary supplement, so by definition it does not cure flu or cold symptoms. The product contains in its composition: sugar, blackcurrant juice concentrate, elderberry extract (Sambucus nigra L.) (3.0%), raspberry juice concentrate (2.8%), acerola fruit extract (Malpighia glabra L.), acidity regulator: citric acid, natural flavor, zinc gluconate, linden inflorescence extract (Tiliacordata Mill.) (0,8%). It can be considered a mixture of plant extracts, juice concentrates, zinc, which may contribute to supporting the proper functioning of the immune system. I leave a link to product availability: https://www.gdziepolek.pl/produkty/94699/doz-product-cegrip-proszek-do-wytworzenia-plynu/apteki?pvid=238164#stacjonarne