Exo Terra Calcium + D3 Powder Supplement
Exo Terra earns a top spot for reliably delivering a balanced calcium with vitamin D3 in a consistently fine powder that works well for most reptile and amphibian feeding needs; its formulation is optimized for everyday supplementation and widely stocked by retailers. Compared with budget options it offers a slightly more consistent particle distribution for dusting small prey, while costing less than some specialty micro- and nano-particulate mixes, making it a solid mid-range choice for keepers seeking dependable D3 supplementation.
Ultrafine particles — sticks like fairy confetti
D3 boosted — little sunshine powder
Ultrafine particles — sticks like fairy confetti
D3 boosted — little sunshine powder
Review Summary
"Generally praised for providing consistent calcium and D3 supplementation at an affordable price; users report reliable results though some note occasional clumping and a slightly gritty texture. Long-term users appreciate the value but some experienced keepers prefer finer-particle or higher-purity alternatives."
Quick dusting — meal prep in seconds
Micronized powder designed for dusting insects and producing fine coverage on feeders.
Quick dusting — meal prep in seconds
Micronized powder designed for dusting insects and producing fine coverage on feeders.
Increased Safety & Security
Time-Saving Convenience
Recreational Enjoyment
Exo Terra earns a top spot for reliably delivering a balanced calcium with vitamin D3 in a consistently fine powder that works well for most reptile and amphibian feeding needs; its formulation is optimized for everyday supplementation and widely stocked by retailers. Compared with budget options it offers a slightly more consistent particle distribution for dusting small prey, while costing less than some specialty micro- and nano-particulate mixes, making it a solid mid-range choice for keepers seeking dependable D3 supplementation.
Ultrafine particles — sticks like fairy confetti
D3 boosted — little sunshine powder
Quick dusting — meal prep in seconds
Micronized powder designed for dusting insects and producing fine coverage on feeders.
Contains vitamin D3 to support calcium absorption when UVB exposure is limited.
Ultrafine particles — sticks like fairy confetti
D3 boosted — little sunshine powder
Quick dusting — meal prep in seconds
Micronized powder designed for dusting insects and producing fine coverage on feeders.
Contains vitamin D3 to support calcium absorption when UVB exposure is limited.
$10-20 USD
Zoo Med Repti Calcium with D3
Zoo Med is a market leader thanks to aggressive pricing and extremely broad availability, making it the go-to economical choice for routine dusting of feeder insects. Its cost-effectiveness and familiar formula suit large-scale or budget-conscious keepers, though its particle size and formulation are generally coarser than ultrafine or specialty micro/nano products, so it is less optimal for the smallest prey or the most sensitive amphibians compared with ultrafine brands like Rep‑Cal or specialized mixes like Arcadia EarthPro.
D3 included — sunny snack
Powdery cling — coats prey evenly
D3 included — sunny snack
Powdery cling — coats prey evenly
Review Summary
"Widely liked for its dependable D3-fortified formula and good mixability; reviewers commonly praise its effectiveness for preventing metabolic bone disease, with a few complaints about packaging and occasional clumps. Overall popular among hobbyists and breeders for routine dusting."
Budget friendly — more crickets per jar
Fine particulate calcium with added vitamin D3 for bone and shell health.
Budget friendly — more crickets per jar
Fine particulate calcium with added vitamin D3 for bone and shell health.
Increased Safety & Security
Time-Saving Convenience
Zoo Med is a market leader thanks to aggressive pricing and extremely broad availability, making it the go-to economical choice for routine dusting of feeder insects. Its cost-effectiveness and familiar formula suit large-scale or budget-conscious keepers, though its particle size and formulation are generally coarser than ultrafine or specialty micro/nano products, so it is less optimal for the smallest prey or the most sensitive amphibians compared with ultrafine brands like Rep‑Cal or specialized mixes like Arcadia EarthPro.
D3 included — sunny snack
Powdery cling — coats prey evenly
Budget friendly — more crickets per jar
Fine particulate calcium with added vitamin D3 for bone and shell health.
Easy-to-use dusting powder suitable for a broad range of reptiles and amphibians.
D3 included — sunny snack
Powdery cling — coats prey evenly
Budget friendly — more crickets per jar
Fine particulate calcium with added vitamin D3 for bone and shell health.
Easy-to-use dusting powder suitable for a broad range of reptiles and amphibians.
$10-18 USD
Repashy SuperCal NoD
Repashy SuperCal NoD stands out as a specialist product by providing very pure, fine calcium with no added vitamin D3, which gives keepers precise control over supplementation when reliable UVB exposure is provided. Technically geared toward advanced husbandry, it reduces the risk of hypervitaminosis from duplicate D3 sources and is positioned at a premium price point compared with D3-containing mainstream powders, making it the preferred choice for breeders and veterinarians who require strict nutrient control.
No D3 — DIY sunshine control
Superfine texture — even coverage
No D3 — DIY sunshine control
Superfine texture — even coverage
Review Summary
"Highly regarded as a high-purity, ultrafine calcium without vitamin D3 that mixes easily and is favored for controlled D3 dosing; users repeatedly note excellent solubility and consistent results. Considered a premium choice by experienced keepers and those breeding or managing sensitive species."
High-calcium load — bones cheer
Formulated without vitamin D3 so keepers can control D3 exposure via UVB or diet.
High-calcium load — bones cheer
Formulated without vitamin D3 so keepers can control D3 exposure via UVB or diet.
Increased Safety & Security
Skill Development & Mastery
Repashy SuperCal NoD stands out as a specialist product by providing very pure, fine calcium with no added vitamin D3, which gives keepers precise control over supplementation when reliable UVB exposure is provided. Technically geared toward advanced husbandry, it reduces the risk of hypervitaminosis from duplicate D3 sources and is positioned at a premium price point compared with D3-containing mainstream powders, making it the preferred choice for breeders and veterinarians who require strict nutrient control.
No D3 — DIY sunshine control
Superfine texture — even coverage
High-calcium load — bones cheer
Formulated without vitamin D3 so keepers can control D3 exposure via UVB or diet.
Ultra-fine, highly palatable powder that clings well to feeder insects and foods.
No D3 — DIY sunshine control
Superfine texture — even coverage
High-calcium load — bones cheer
Formulated without vitamin D3 so keepers can control D3 exposure via UVB or diet.
Ultra-fine, highly palatable powder that clings well to feeder insects and foods.
$20-35 USD
Arcadia EarthPro-CalciumPro-Mg
Arcadia EarthPro-CalciumPro-Mg is recognized for its technically driven formula that combines micro-particulate calcium with a calibrated magnesium ratio to support bone and metabolic health in both reptiles and amphibians. As a specialist offering it targets improved bioavailability and electrolyte balance compared with single-mineral powders, and while it typically carries a higher price than mass-market brands, the added magnesium and refined particle engineering make it valuable for keepers managing delicate or mineral-sensitive species.
Mg fortified — mineral harmony
Micronized mix — dusts like silk
Mg fortified — mineral harmony
Micronized mix — dusts like silk
Review Summary
"Reviewed positively for its professional-grade formulation including magnesium, with many users reporting improved health and strong quality control; some find it more expensive but worthwhile for serious hobbyists. Limited but enthusiastic user base cites excellent particle size and consistency."
Pro-grade formula — keeper's pick
Contains added magnesium to support a broader mineral balance alongside calcium.
Pro-grade formula — keeper's pick
Contains added magnesium to support a broader mineral balance alongside calcium.
Increased Safety & Security
Skill Development & Mastery
Time-Saving Convenience
Arcadia EarthPro-CalciumPro-Mg is recognized for its technically driven formula that combines micro-particulate calcium with a calibrated magnesium ratio to support bone and metabolic health in both reptiles and amphibians. As a specialist offering it targets improved bioavailability and electrolyte balance compared with single-mineral powders, and while it typically carries a higher price than mass-market brands, the added magnesium and refined particle engineering make it valuable for keepers managing delicate or mineral-sensitive species.
Mg fortified — mineral harmony
Micronized mix — dusts like silk
Pro-grade formula — keeper's pick
Contains added magnesium to support a broader mineral balance alongside calcium.
Micronized particle size for high bioavailability and even dusting on prey items.
Mg fortified — mineral harmony
Micronized mix — dusts like silk
Pro-grade formula — keeper's pick
Contains added magnesium to support a broader mineral balance alongside calcium.
Micronized particle size for high bioavailability and even dusting on prey items.
$25-45 USD
Rep-Cal Calcium with Vitamin D3 Ultrafine Powder
Rep-Cal Ultrafine is best-in-class for particle size, delivering an ultrafine calcium plus D3 powder that adheres well to tiny feeders and is ideal for hatchlings, arboreal species, and amphibians that require micro-particulate coverage. It competes favorably on both technical merit and price-per-gram against other ultrafine and specialty products, offering breeders and hobbyists an affordable way to ensure high surface area coverage and improved ingestion rates compared with coarser blends from mainstream brands.
Ultrafine powder — clings like glitter
Vitamin D3 — ready bone support
Ultrafine powder — clings like glitter
Vitamin D3 — ready bone support
Review Summary
"Rep-Cal Ultrafine is often praised for its very fine particle size and good uptake by small feeders, making it a go-to for many reptile and amphibian keepers; a minority report occasional clumping or variability between batches. Overall seen as reliable and cost-effective for routine supplementation."
Clinic trusted — go-to staple
Ultrafine particulate designed to adhere well to small feeder insects and soft foods.
Clinic trusted — go-to staple
Ultrafine particulate designed to adhere well to small feeder insects and soft foods.
Increased Safety & Security
Time-Saving Convenience
Recreational Enjoyment
Rep-Cal Ultrafine is best-in-class for particle size, delivering an ultrafine calcium plus D3 powder that adheres well to tiny feeders and is ideal for hatchlings, arboreal species, and amphibians that require micro-particulate coverage. It competes favorably on both technical merit and price-per-gram against other ultrafine and specialty products, offering breeders and hobbyists an affordable way to ensure high surface area coverage and improved ingestion rates compared with coarser blends from mainstream brands.
Ultrafine powder — clings like glitter
Vitamin D3 — ready bone support
Clinic trusted — go-to staple
Ultrafine particulate designed to adhere well to small feeder insects and soft foods.
Contains vitamin D3 to aid calcium uptake in animals with inadequate UVB exposure.
Ultrafine powder — clings like glitter
Vitamin D3 — ready bone support
Clinic trusted — go-to staple
Ultrafine particulate designed to adhere well to small feeder insects and soft foods.
Contains vitamin D3 to aid calcium uptake in animals with inadequate UVB exposure.
$12-28 USD