Don’t know my friend. As I said this is what my ADHD blurted out when I read the original post 🤣 Please check the validity of this yourself but it was something she was advised to avoid.

My wife (who is ADHD) said vitamin c , orange juice for example. Apparently it reduces the uptake. Your advised not to have orange juice because it can interfere with the uptake

Others have answered your questions. Just wanted to point out that 256GB is not very big, depending on how much your brother wants to download (and how much of what he downloads he wants to keep).

Two more weeks