Designing your own personalized supplement formula

Has anyone used VitaminLab https://getvitaminlab.com/ or similar companies where you can design your own personalized supplement formula? I’m interested in experiences with custom multivitamins tailored to my specific health goals, like longevity stacks. Recommendations for alternatives (especially in Europe) welcome!

https://getvitaminlab.com/create-stack/?source=general_formula_name