which vitamin in curd - #25140

I am feeling really confused about my diet lately, especially after learning about the nutritional benefits of curd! I've always loved eating it, but I don't really know which vitamin in curd is the most important for my health. I’ve been feeling kind of sluggish and thought maybe I should focus on adding more whole foods like curd. But like, I read somewhere that curd is rich in probiotics too, which I'm guessing is good? The other day, I decided to switch to homemade curd instead of store-bought, hoping that would help me out more. I’m also wondering which vitamin in curd I should be looking for? I mean, I get my vitamins from fruits and veggies but is there something extra in curd that can help boost my energy levels? And does it really make a difference how I consume it? If there's anyone here who can explain which vitamin in curd is essential and maybe how it works, that’d be great! Feeling lost and any advice would help!