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Supplements and Fortified Dusts in Canada 2025: Top 5 Expert-Reviewed Calcium, Multivitamin and Mineral Dusts (Repashy, Zoo Med, Exo Terra, Fluker, Rep-Cal) — Find the Right Formula for Your Insect-Fed Pet

Published on Thursday, August 21, 2025

Supplements and fortified dusts are powdered and liquid nutrient products designed to prevent deficiencies in insect-fed animals, including reptiles, amphibians and many invertebrates. This category covers calcium powders, multivitamin blends, mineral dusts, liquid supplements and timed-release formulas that make it easier to deliver precise nutrients to feeders and directly to pets. Consumers choose these products for reliable prevention of common problems such as metabolic bone disease, for convenience when feeding live insects, and for targeted formulas that match life stage, breeding or recovery needs. In the Canadian market, preferences lean toward products with clear dosing guidance, consistent ingredient sourcing, vitamin D3 options for low-UVB setups, and packaging that maintains stability in varied climates. Shoppers also balance price, lab testing, and retailer availability when selecting the right dust for their pet.

Quick Menu

1. Best High-Calcium Formula

2. Best for Vitamin D3 Supplementation

3. Best Value Calcium + D3

4. Best Budget Supplement

5. Best Trusted Brand Calcium

1
BEST HIGH-CALCIUM FORMULA

Repashy Calcium Plus

Repashy

Repashy Calcium Plus earns a best-in-class spot for supplement and fortified dust use because it delivers a concentrated, micronutrient‑balanced calcium formula that mixes well into gels and foods used in dusting workflows. Compared with the more budget-oriented powders on this list, Repashy commands a higher shelf price but its finer particle size and broader nutrient profile make it technically more efficient and cost‑effective per dose for owners managing diverse reptile diets.

4.6
★★★★☆

  • High-calcium punch

  • Mix-friendly dust

  • High-calcium punch

  • Mix-friendly dust

Review Summary

90%

"Users consistently praise Repashy Calcium Plus for its fine texture, reliable dosing, and easy mixing, saying it integrates well into regular feeding routines; a few note the price is higher than generic brands but justify it for quality. Overall long-term users report noticeable benefits in bone health and egg production for reptiles. "

  • Egg-laying ally

  • High calcium-to-phosphorus ratio designed for bone support

  • Egg-laying ally

  • High calcium-to-phosphorus ratio designed for bone support

Increased Safety & Security

Time-Saving Convenience

Skill Development & Mastery

Repashy Calcium Plus earns a best-in-class spot for supplement and fortified dust use because it delivers a concentrated, micronutrient‑balanced calcium formula that mixes well into gels and foods used in dusting workflows. Compared with the more budget-oriented powders on this list, Repashy commands a higher shelf price but its finer particle size and broader nutrient profile make it technically more efficient and cost‑effective per dose for owners managing diverse reptile diets.

  • High-calcium punch

  • Mix-friendly dust

  • Egg-laying ally

  • High calcium-to-phosphorus ratio designed for bone support

  • Includes vitamin D3 to help with calcium absorption

  • High-calcium punch

  • Mix-friendly dust

  • Egg-laying ally

  • High calcium-to-phosphorus ratio designed for bone support

  • Includes vitamin D3 to help with calcium absorption

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From 34.95$
2
BEST FOR VITAMIN D3 SUPPLEMENTATION

Zoo Med Reptivite with D3

Zoo Med

Zoo Med Reptivite with D3 is a market leader due to broad availability, consistent D3 dosing and a long track record among hobbyists focused on supplements and fortified dusts. It typically undercuts premium brands on price and is easy to source worldwide, though it is generally simpler in nutrient breadth compared with specialty mixes like Repashy, making it a reliable, budget‑friendly option for routine dusting.

4.2
★★★★☆

  • Sunshine-in-powder

  • Fast-absorbing sprinkle

  • Sunshine-in-powder

  • Fast-absorbing sprinkle

Review Summary

84%

"Buyers appreciate Zoo Med ReptiVite with D3 as an affordable multivitamin/calcium combo that is convenient and generally effective, though some users prefer separate supplements for tighter control of D3 dosing. Reports over time mention good acceptance by many species but occasional variance in pellet/powder consistency. "

  • UV-backup buddy

  • Balanced calcium supplement with added vitamin D3

  • UV-backup buddy

  • Balanced calcium supplement with added vitamin D3

Increased Safety & Security

Time-Saving Convenience

Zoo Med Reptivite with D3 is a market leader due to broad availability, consistent D3 dosing and a long track record among hobbyists focused on supplements and fortified dusts. It typically undercuts premium brands on price and is easy to source worldwide, though it is generally simpler in nutrient breadth compared with specialty mixes like Repashy, making it a reliable, budget‑friendly option for routine dusting.

  • Sunshine-in-powder

  • Fast-absorbing sprinkle

  • UV-backup buddy

  • Balanced calcium supplement with added vitamin D3

  • Widely available from pet retailers and online

  • Sunshine-in-powder

  • Fast-absorbing sprinkle

  • UV-backup buddy

  • Balanced calcium supplement with added vitamin D3

  • Widely available from pet retailers and online

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$10-20 CAD

3
BEST VALUE CALCIUM + D3

Exo Terra Calcium + D3 Powder

Exo Terra
🏠 Local Product

Exo Terra Calcium + D3 Powder stands out for a fine‑mesh formulation and mid‑range pricing that blend technical performance with good value for fortified dust applications. While not as nutrient‑diverse as Repashy, it offers better solubility and handling than some bulk budget powders, positioning it as a practical choice for keepers who want dependable D3 supplementation without premium pricing.

4
★★★★☆

  • Fine-dust finish

  • D3 sunshine kick

  • Fine-dust finish

  • D3 sunshine kick

Review Summary

78%

"Exo Terra Calcium + D3 Powder is often noted as a budget-friendly, readily available option that mixes well and delivers expected benefits, but several long-term users mention occasional clumping and prefer finer formulations. Most reviewers say it works fine for routine supplementation but favor premium brands for sensitive or growing animals. "

  • Feeder-friendly coat

  • Affordable calcium powder fortified with vitamin D3

  • Feeder-friendly coat

  • Affordable calcium powder fortified with vitamin D3

Increased Safety & Security

Time-Saving Convenience

Exo Terra Calcium + D3 Powder stands out for a fine‑mesh formulation and mid‑range pricing that blend technical performance with good value for fortified dust applications. While not as nutrient‑diverse as Repashy, it offers better solubility and handling than some bulk budget powders, positioning it as a practical choice for keepers who want dependable D3 supplementation without premium pricing.

  • Fine-dust finish

  • D3 sunshine kick

  • Feeder-friendly coat

  • Affordable calcium powder fortified with vitamin D3

  • Suitable for routine dusting of reptiles and amphibians

  • Fine-dust finish

  • D3 sunshine kick

  • Feeder-friendly coat

  • Affordable calcium powder fortified with vitamin D3

  • Suitable for routine dusting of reptiles and amphibians

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From 9.49$
4
BEST BUDGET SUPPLEMENT

Fluker's Repta-Calcium with D3

Fluker's

Fluker's Repta‑Calcium with D3 is notable for delivering large-volume packaging and aggressive pricing that make frequent dusting economically feasible for larger collections. Technically it provides standard calcium+D3 support similar to others on the list, but its main advantage is cost per gram—trading a less complex nutrient profile for affordability compared with specialty blends like Repashy.

3.9
★★★☆☆

  • Reliable daily dust

  • Hatchling helper

  • Reliable daily dust

  • Hatchling helper

Review Summary

75%

"Fluker's Repta-Calcium with D3 is commonly recommended for basic calcium supplementation and is praised for value, though some users report a gritty texture and variable palatability for pickier reptiles. Extended-use reviewers find it adequate for maintenance but sometimes switch for higher-quality or finer powders for juveniles. "

  • Classic calcium boost

  • Cost-effective calcium powder that includes vitamin D3

  • Classic calcium boost

  • Cost-effective calcium powder that includes vitamin D3

Increased Safety & Security

Fluker's Repta‑Calcium with D3 is notable for delivering large-volume packaging and aggressive pricing that make frequent dusting economically feasible for larger collections. Technically it provides standard calcium+D3 support similar to others on the list, but its main advantage is cost per gram—trading a less complex nutrient profile for affordability compared with specialty blends like Repashy.

  • Reliable daily dust

  • Hatchling helper

  • Classic calcium boost

  • Cost-effective calcium powder that includes vitamin D3

  • Fine texture for consistent coating on feeder insects

  • Reliable daily dust

  • Hatchling helper

  • Classic calcium boost

  • Cost-effective calcium powder that includes vitamin D3

  • Fine texture for consistent coating on feeder insects

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$7-16 CAD

5
BEST TRUSTED BRAND CALCIUM

Rep-Cal Calcium with Vitamin D3

Rep-Cal

Rep-Cal Calcium with Vitamin D3 is a straightforward, no‑frills calcium/D3 powder aimed at owners who want consistent vitamin D supplementation without extra micronutrients, making it one of the more economical single‑purpose options for supplements and fortified dusts. It is typically cheaper than all‑in‑one formulas but lacks the broader nutrient spectrum of premium products, so it is best used when paired with a varied diet or UVB management strategy.

4.3
★★★★☆

  • Clinic-trusted formula

  • D3 sun-kiss

  • Clinic-trusted formula

  • D3 sun-kiss

Review Summary

86%

"Rep-Cal Calcium with Vitamin D3 is widely liked for being inexpensive, effective, and easy to dose; long-term users often report steady results in shell and bone health. A minority express concern about potency consistency, but most users rate it as a reliable everyday supplement. "

  • Measured precision

  • Long-established reptile calcium supplement with D3

  • Measured precision

  • Long-established reptile calcium supplement with D3

Increased Safety & Security

Skill Development & Mastery

Rep-Cal Calcium with Vitamin D3 is a straightforward, no‑frills calcium/D3 powder aimed at owners who want consistent vitamin D supplementation without extra micronutrients, making it one of the more economical single‑purpose options for supplements and fortified dusts. It is typically cheaper than all‑in‑one formulas but lacks the broader nutrient spectrum of premium products, so it is best used when paired with a varied diet or UVB management strategy.

  • Clinic-trusted formula

  • D3 sun-kiss

  • Measured precision

  • Long-established reptile calcium supplement with D3

  • Formulated to assist normal calcium metabolism

  • Clinic-trusted formula

  • D3 sun-kiss

  • Measured precision

  • Long-established reptile calcium supplement with D3

  • Formulated to assist normal calcium metabolism

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$9-22 CAD

What the Research Says About Fortified Dusts and Supplementation

A mix of veterinary guidance and peer-reviewed research supports the use of calcium and multivitamin supplements to correct or prevent nutritional deficiencies in insect-fed animals. Key findings emphasize correct calcium to phosphorus balance, the role of vitamin D3 in calcium absorption, and the need to match supplementation frequency to species, age and UVB exposure. Research and clinical practice also highlight the risk of under- or over-supplementation, which makes product quality, accurate dosing, and following species-specific protocols essential.

Calcium to phosphorus ratio: Maintaining an appropriate Ca:P ratio in the diet is central to preventing metabolic bone disease.

Vitamin D3 function: Vitamin D3 improves intestinal calcium absorption; in animals without adequate UVB exposure, dietary D3 often becomes more important.

Bioavailability matters: Forms of calcium (for example, calcium carbonate vs calcium citrate) differ in absorption; product formulation affects effectiveness.

Timed-release and liquid formulas: These can improve dosing precision in specific situations such as hatchlings, gravid females or animals recovering from illness.

Safety and dosing frequency: Over-supplementation carries risks. Veterinarians recommend species-specific dosing schedules and combining UVB, gut-loaded insects and dusting strategies.

Evidence base: Veterinary case reports and controlled studies support dusting as a component of holistic husbandry when combined with proper feeding, UVB and husbandry practices.

In Canada in 2025, the right fortified dust or supplement depends on your species, UVB setup and feeding routine. The five products featured here — Repashy Calcium Plus, Zoo Med Reptivite with D3, Exo Terra Calcium + D3 Powder, Fluker's Repta-Calcium with D3, and Rep-Cal Calcium with Vitamin D3 — cover a range of formulas from high-calcium powders to multivitamin blends and D3-containing options. For most insect-fed reptiles that need a reliable all-around calcium supplement, Repashy Calcium Plus is the best overall choice on this list due to its balanced formulation and broad suitability across life stages. I hope you found what you were looking for; if not, use the search to refine by species, life stage, ingredient or format to expand or narrow your results.

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