evidence: Colloidal silver has been used to prevent and treat infections since ancient times. The first use of colloidal silver for medical reasons was by a surgeon in 1891, who used it to clean wounds. In the years that followed, doctors mainly used it to treat skin infections. Some doctors believed that if you swallowed colloidal silver, it could cure a range of conditions like stomach ulcers, mental illness, colds, and epilepsy. It got more popular until the 1940s, when doctors started using antibiotics instead. Today, you’ll see it marketed and sold as a dietary supplement. [...] There is one exception: Colloidal silver can be safe for skin wounds. Some creams, bandages, and wound dressings have colloidal silver. It can help prevent and treat minor skin infections. It also can soothe skin irritation and burns. But if you notice redness or inflammation after using colloidal silver on your skin, stop and call your doctor. [...] Colloidal Silver FAQs - What can colloidal silver be used for? The only safe and effective use for colloidal silver is in creams that prevent and treat skin infections.