From Alternet:

The notoriously ignorant right-winger and anti-vaxxer Candance Owens went from denying the validity of vaccines to encouraging her 4.1 million followers on Instagram to follow her regimen of using colloidal silver as a daily supplement.

“Yes, colloidal silver!” Owens says enthusiastically in her latest Instagram video. “I take colloidal silver every single day, I love colloidal silver. That is a great one. That is another one that people probably know nothing about.

And just in case you’re interested in staving off illness with colloidal silver, the Mayo Clinic clearly says the stuff isn’t safe or effective for anything basically. “Silver has no known purpose in the body. It’s not an essential mineral.”

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The most infamous side effect from using colloidal silver is argyria, a condition that can permanently turn the skin of the user a bluish-gray.