For the cap-m-quick size to use, you have to buy for the size capsule you want to fill, as the unit will only fill one size !
I have used both the 00 and the 000 size and we are now using the 000 size!
At first we used the 00 size and the children were ok with this size, then I tried some 000 and they at first thought they were too big, but when we ran out of the 00 size and all they had to use was the larger size, they have gotten used to it and it is what I shall continue to use !
Even the grandchildren use this 000 size, it is no larger than a small piece of food to swallow, just the idea in the mind and when one gets thru the mental block, it is easy to take !
The 000 size hold much more than either the 0 or 00 size !
If in question at least the 00 size would be lots easier to fill and be able to get more per capsule than the 0 size!
But, it still depends upon ones Mental considerations of the user !