Calcium powder without D3 (for live insects only): How Crested Geckos Use It
Frequency
Dust any live insects offered, if offering them at all
Role
Only relevant if supplementing the diet with live feeders. Since CGD already supplies calcium and D3, this is a lighter-touch addition than in an insectivorous species' routine — it's there to balance the phosphorus-heavy live insects, not to replace CGD's role.
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Complete CGD powder (the primary supplement system) is used every feeding, 3–4x per week. A quality commercial CGD (Pangea, Repashy) already contains balanced calcium, D3, protein, and vitamins formulated specifically for this species — it functions as both food and supplement simultaneously, which is unusual among popular reptile pets and simplifies supplementation considerably..
Multivitamin powder is used generally unnecessary if feeding a quality complete cgd consistently. Most keepers relying on CGD as the diet base don't need a separate multivitamin — over-supplementing on top of an already-complete diet risks vitamin A and D3 excess.