Can i add things to my protein shake?

hi! so, short story, 2 years ago, i was suffering major daily panic attacks due to so much stress. i was also 5'10 255lbs. anyway, i chose to go to the gym rather than take anti depressants for several reasons not important here. while i was going to the gym, i was drinking a protein shake immediately after my workouts. it consisted of 25 grams of whey protein, 2 cups of milk, and probiotics. after a year, i went from 255lbs to 210lbs. later in the year, i started to incorporate 25 grams of casein protein and 2 cups of milk before i went to sleep. that's where i saw more weight loss. anyway, after the year was over, i suffered some financial hardships and whatnot, and couldn't afford a gym membership for close to a year. and well, i gained my 45lbs back. now i'm back in the gym, and i have my fun ingredients back.

my new idea now is to add some essential vitamins and minerals into my shake since i am so focused on drinking it daily. i work out 5 days a week, and drink 15 shakes a week. 5 of them are a BCAA drink with 2 cups of water that i drink during my workout. another 5 is 20 grams of whey protein 2 cups of whole milk, and 1 teaspoon of probiotics that i drink immediately after my workout. and finally, before bed, 5 is 24 grams of casein protein and 2 cups of whole milk.

now, i want to add calcium, magnesium and vitamin d to my whey protein shake. the whey protein already has 75mg calcium and 15mg magnesium. mind you, i dont want to put too much in there, because i do have a diet where bananas and spinach and so on is common. i just want to make sure that i have a decent amount of my daily requirements in the key moment of muscle recovery.

also noted; my body goal is open ended. i dont want to be a body builder, and i dont want to be skinny. i do want my muscles to grow, and i also want calories to burn. so, yea. what do we got yahoo people?