Adding supplements to a Budgett's frog diet is not impossible, just requires a little more effort.

If your frog is an eager feeder and jumps out of the water for his dinner, tong feeding dusted prey won't be a hassle

If your frog is a little more fussy, you may want to ask your vet for some syringes and inject the prey with the supplements prior to feeding him. I had to do this with medication for a frog that was sick one time.

Exoterra also makes a water conditioner that has calcium supplement added to it.