Shungite

Since ancient times, shungite has been used to purify water. This is due to its alleged activity against bacteria and viruses.
A 2018 study states that shungite can filter water by removing contaminants and organic substances like pesticides. A 2017 study also found that carbon from shungite can remove radioactive compounds from water.
Eases physical ailments
Traditionally, water infused with shungite has been used for:
allergies
sore throats
asthma
gastric issues
arthritis
kidney problems
liver problems
gallbladder issues
autoimmune disease
pancreatic dysfunction
chronic fatigue