We live in the country and have a septic system. There are many things that kill bacteria it would be impossible to prevent them from going down into the tank an drain-feild lines and live a normal life. Just doing the laundry with detergent, with or without bleach will kill bacteria. But they recover very quickly. We've had no problems with our system and it's been 25 years since the tank was cleaned.
Only if you're not under a Drs care. They don't usually keep anyone on antibiotics for extended periods of time. And you have to report all side-effects you may have. Read the inserts that come with prescriptions.
See:
http://en.wikipedia.org/wiki/Medical_uses_of_silver#Medical_uses
Colloidal silver (a
colloid consisting of silver particles suspended in liquid) and formulations containing silver salts were used by physicians in the early 20th century, but their use was largely discontinued in the 1940s following the development of safer and more effective modern antibiotics.
[8][9] Since the 1990s, colloidal silver has again been marketed for ingestion as an
alternative medicine, often with extensive "cure-all" claims. Colloidal silver products remain available in many countries as
dietary supplements and homeopathic remedies, although they are not effective in treating any known condition and carry the risk of serious side effects such as
argyria, allergic reactions, and interactions with prescription medications.
[10][11][10]
Testing done with this product proved it to be useless for both gram negative and gram positive bacteria.
Many bacteria will develop resistance, or some will call it immunity, to our antibiotics. It has been seen where one type of bacteria have passed their resistance to a different type. Not all mutate. Once vaccinated for say, polio and measles... you are immune for life as they don't mutate as does Influenza.