My son puts vitamins on the crickets every feeding. We use
T-Rex vitamins for Bearded Dragons.
Crude protein, min 25% Calcium(Ca)min 14%
Crude fat, min 1.5% Calcium(Ca)max 16%
Crude fiber,max 3% Vit A Acetate 20,000 IU/Kilo
Mositure, max 8% Vit D-3, min 4000 IU/Kilo
Ash, max 8%
It has a bunch of other stuff in it, including Lactobacillus &Bifidobacyerium (good bacteria for a system)
Also, we feed and use gut load water.

