What collagen will be best for my 50-year-old sister?

If you care about good collagen for joints, it is worth choosing a preparation containing collagen hydrolyzate and additional ingredients, e.g. vitamin C, hyaluronic acid or glucosamine sulphate. I enclose links to pages where you can compare the prices of collagen remedies for joints in online pharmacies and order a preparation with home delivery or collection at a pharmacy: https://www.gdziepolek.pl/produkty/30276/flexi-stav-xtra-proszek-do-wytworzenia-plynu/apteki https://www.gdziepolek.pl/produkty/58075/orton-flex-proszek-do-wytworzenia-plynu/apteki If you are looking for collagen for healthy skin, a good choice will be a preparation that, in addition to collagen, contains biotin, copper and vitamins A and E and not contains sugar, e.g. https://www.gdziepolek.pl/produkty/98034/doppelherz-system-kollagen-beauty-plyn/apteki The preparation should contain a minimum of 10 g of collagen in one dose of the product. This amount of collagen is easiest to take in the form of powder to dissolve and drink. Therefore, the preparation proposed above is in the form of drinking agents, not tablets. It is worth getting acquainted with our analysis of collagen from the pharmacy: https://www.gdziepolek.pl/artykuly/jaki-kolagen-wybrac-analiza I also encourage you to watch our short video: