Are selenium supplements loaded with toxic metals too?

What's actually in it

We looked at the available peer-reviewed research to see if selenium supplements are contaminated with toxic metals. Unfortunately, the studies we have access to do not cover selenium. They focus on other products like tattoo inks and different herbal supplements.

Because we only rely on proven data, we cannot tell you if your selenium supplement is safe or if it contains hidden heavy metals. When it comes to your health, we don't guess. We only share facts backed by actual lab results.

What the research says

A 2026 study in J Hazard Mater investigated toxic metals and carcinogens in products, but it focused on tattoo inks rather than dietary supplements. Similarly, while a 2026 study in PLoS One analyzed heavy metals in Rhodiola rosea supplements, it did not test selenium.

Without a specific peer-reviewed study on selenium, we cannot confirm the levels of contaminants in those products. We are constantly updating our database as new science becomes available.