Monster Energy Drinks are okay to drink in moderation but you should not drink them everyday or if you do you should only drink one per day and never drink more than 2 Monster Energy Drinks per day everyday.
The Monster Energy Drinks can increase your heart rate so you could get heart disease, heart attacks and even a stroke if you drink too much Monster Energy Drinks.
Energy Drinks including the Monster Energy Drinks can be harmful to your health when you drink them in excess but when you consume the Monster Energy Drinks in moderation they are okay.
Other than providing you with some needed energy the Monster Energy Drinks do not provide any health benefits and could actually cause health problems instead.
I sometimes drink a few Monster Energy Drinks per week but I don't drink them too much.