@bluebonnet242 from what I've read, calcium is unlikely to significantly interfere with rosuvastatin absorption, though calcium citrate is generally preferred over carbonate form to minimize any potential interaction. Regarding magnesium, the main concern is with magnesium oxide which could reduce rosuvastatin absorption; other salt forms such as glycinate are fine.

I don't take calcium supplement myself, but I do take my evening magnesium glycinate alongside rosuvastatin. Rosuvastatin can be taken anytime without regard to food, thanks to its long half life. It's best taken at the same time each day.