Energy Drinks.

There are two of them that can only be used 3 times each respectively.
-5 Fatigue and -10 Fatigue.
My question is can I use 3 Red Moo (-5F) and 3 Vita C (-10F) for a total of -45 Fatigue per day?
Or is it like:
2 Red Moo
1 Vita C
or only 3 of each?

3 total. I used 3 of the 300k ones and then I was unavble to use the 1mill potion.

This is true. 3 total a day only.