I think antibiotics should be restricted, it was once a powerful medicinal weapon but as it was overused bacteria "got used to it" and started to adapt to it making it weaker and weaker. By using it a lot bacteria have to live in that environment and with natural selection the traits of being resistant to antibiotics became stronger and through generations evolved and gained resistance to antibiotics.
According to Wikipedia, If a bacterium carries several resistance genes, it is called multidrug resistant (MDR) or, informally, a superbug or super bacterium, so because of the overuse of antibiotics more and more bacteria starts to get these resistance genes as natural selection chooses to keep them.
It is also dangerous as well. According to shirleys-wellness-cafe.com, if the use of antibiotic treatment fails it causes longer illness which causes more treatment fees and extended stays in the hospital. Some resistant infections can cause deaths as well, the antibiotic resistant bacteria can spread to other people as well.
So I think the use of antibiotics should be restricted because of overusing them bacteria developed the ability to survive in the exposure of antibiotics which makes the medicine less powerful and making the diseases much more powerful.
Sources:
http://en.wikipedia.org/wiki/Antibiotic_resistance
http://www.shirleys-wellness-cafe.com/antibiotics.htm
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