Hello tilou~
You might google 'collagen' and see what you think. I feel it's been very beneficial for me to take....I can see and feel the difference in my body since I've been using it on a daily basis..and have for years now. There are many kinds as well as different 'types' in the products out there. I chose "Code age" for its ingredients and price and am pleased with this product. Good luck on your search.