The directions on the magnesium citrate says specifically to drink 1/2 to one full bottle. It's not a "concentrated" liquid; it's very much like Sprite (lemon-lime flavor). It's much better than Epsom Salts in any event.
Sorry, but I just am not familiar with the type of magnesium citrate you are talking about. You could always take all the tablespoons at once upon waking the morning after taking the oil/juice mixture.