please dont take antibiotics every time you feel a stuffy nose.90 percent of time it will be allergies,cold-viral wont be killed by antibiotic,flu is also possible and that can make you feel very sick,the diseases that these folks are talking about,well one is c-diff,it is a bacteria that flourishes in the intestines when all of your good bacteria has been killed by antibiotics..You dont need fancy antibiotics in most cases,amoxicillin or keflex,and septra are all inexpensive and will help if you were to become ill with bacteria that they kill,common ones..For you I would advise to get the pnuemonia shot.I got bronchitis pnuemonia almost every year until I got that shot,and since then I have never gotten so sick as I used to get.Handwashing and gels for when no water is available can kill most bacteria before it gets you sick,fully cooked food.Prevention is the best medicine,and if you have a doctor,develop a relationship where they see the evidence of your infectious illnes and you will find they will probably call your script in and it will be alot less than buying online,,if no doctor or insurance then I would buy some of the antibiotics I mementioned,they are very inexpensive.But do not take unless you have solid symptoms of f bacterial infection.zpac is ok too..As for mrsa,it is hard to cure and hence ivabsIf you work at a phone or computer wipe it down with a bleach wipe before and after you take it are given,probably vancomycin,cdiff can have your butt in the bathroom all day for your shift..I know lots of tricks like that,,tell people to cover mouth when coughin,I am a nurse and get exposed to alotand night and its very hard to get rid of alsoProbiotics are always recommened,culturell or forater are the most common ones I seeRemember prevention is the first defense,dont handle faucets or bathroom doors,and well I kick toilet flusher and turn my head not to get spashed,wear a mask if someone like a kid has something at your house..