Argyria is a condition that consists of a bluish-gray discoloration (sometimes permanent) of the skin and it’s a side effect of colloidal silver taken by mouth, especially in people exposed to the sun. Although topical silver is effective as an antibacterial agent in preventing and treating topical wounds, orally taken colloidal silver is not effective in treating any condition. Yet many products containing colloidal silver are claimed to have immune system boosting effects and anti-bacterial, antifungal, and antiviral properties. Colloidal silver taken by mouth can also decrease the absorption of some medications such as antibiotics and levothyroxine.
The correct answer is A.
References:
National center for complementary and integrative health.
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