I also heard about this method of treating asthma. In my family, no one suffers from this disease, but in my childhood I had a girlfriend who had asthma. When she grew up, she had practically no seizures, but she always carried an inhaler with her. If you want to know which pills or drops contain colloidal silver, I suggest you search Canadian Pharmacy Online. This is a large online pharmacy where there is a detailed description of many drugs.