Plain calcium (no D3): How Leopard Geckos Use It
Frequency
Always available in a small open dish
Role
Many geckos self-regulate calcium intake by licking a small dish voluntarily. Keep one in the enclosure at all times. This reduces the risk of over-supplementing D3 through dusting while ensuring calcium is always accessible.
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Calcium powder with D3 is used every feeding (juveniles) / every other feeding (adults). Primary defence against Metabolic Bone Disease.
Multivitamin powder is used once per week maximum. Provides vitamins A, B complex, and E that are not present in sufficient quantities in feeder insects even with gut-loading.
D3 adjustment if using UVB is used reduce d3 supplementation accordingly. Leopard geckos are crepuscular and get limited UV exposure naturally, but captive geckos with proper UVB lighting (5–7% UVB, 10–12 hours/day) will synthesise D3 through their skin.