Calcium and vitamin supplements are a non-negotiable part of bearded dragon care. Without them, even a dragon eating a “good” diet can develop metabolic bone disease (MBD) — a painful, disfiguring, and often fatal condition.
This guide covers the best calcium and vitamin supplements for bearded dragons and how to use them correctly.
Our Top Picks at a Glance
| Pick | Product | Best for |
|---|---|---|
| Best all-in-one | Repashy Calcium Plus | Simplest routine |
| Best standalone calcium | Zoo Med Repti Calcium (with & without D3) | Traditional dusting |
| Best multivitamin | Rep-Cal Herptivite | Adding vitamins to the mix |
What Supplements Does a Bearded Dragon Need?
- Calcium (without D3): the daily staple. Prevents metabolic bone disease.
- Calcium with D3: provides vitamin D3, which helps absorb calcium. Needed a few times a week (especially if UVB output is uncertain).
- Multivitamin: fills in vitamins and trace minerals 1–2 times a week.
D3 and UVB: How They Work Together
Bearded dragons make their own vitamin D3 when exposed to proper UVB light, which is then used to absorb calcium. That’s why UVB and calcium are a package deal: UVB + calcium = healthy bones; missing either = MBD.
If your UVB is strong and fresh, you can use less D3. If you’re unsure about your UVB, supplement D3 a bit more often — but don’t overdo it, because too much D3 is also harmful.
A Simple Dusting Schedule
| Feeding | What to dust |
|---|---|
| Most insect feedings | Calcium (without D3) |
| 2–3 times per week | Calcium with D3 |
| 1–2 times per week | Multivitamin |
Tip: the “shake and bake” method works well — put insects and a pinch of powder in a bag or cup, shake gently to coat, then feed immediately.
How to Choose
- Want simplicity? Repashy Calcium Plus is an all-in-one (calcium + D3 + vitamins) designed to be used at most feedings — one product, one step.
- Prefer separate products? Zoo Med Repti Calcium comes in both “with D3” and “without D3” versions, plus pair it with Herptivite multivitamin.
- Always check the label — dosages and D3 content vary by brand, so follow the manufacturer’s instructions.
Supplement Mistakes to Avoid
- Skipping calcium entirely — the fastest path to MBD.
- Over-supplementing D3 — too much is toxic. Don’t use “with D3” at every single feeding.
- Dusting but ignoring UVB — supplements can’t replace proper lighting.
- Using old, clumped powder — replace supplements that have absorbed moisture.
Affiliate disclosure: this page contains product recommendations. If you buy through links on our site, we may earn a commission at no extra cost to you. We only recommend products that are widely used and well-reviewed in the bearded dragon community.
Disclaimer: This guide is for general education and does not replace professional veterinary advice.
2 thoughts on “Best Calcium & Vitamin Supplements for Bearded Dragons”