We take a dose of medicine. “Dose” with VK means the quantity of energy we should consume if we eat or drink some energized stuff. Like, taking a sip of charged water at one time is considered as one dose. And the next sip after 10 minutes is the second dose.
If you consume charged water in large quantities at the same time, then, it will too count only one dose. And with that one dose, you will get the same effects as you get a sip of charged water.