Brush Teeth With Urine
According to Smithsonian, Roman doctors (and poets) thought urine was a great teeth whitener. This is due to the presence of ammonia, which is renowned for its stain-removing abilities. Fortunately, mouthwash available for purchase nowadays is much more pleasant.
Arsenic For Fevers And Headaches
Despite its severe toxicity, arsenic has been utilized for hundreds of years to cure a variety of illnesses ranging from fevers and headaches to blood disorders. It may no longer be used to treat minor illnesses, but it still has a role in contemporary medicine. Arsenic trioxide (Trisenox) was reintroduced onto the market in 2003 for the treatment of certain hematological malignancies.