Let's take a minute to talk about your medication. This is dicloxacillin. It is a type of penicillin used to treat infections caused by bacteria. It cannot treat infections caused by viruses, like the common cold. You should take it exactly as prescribed by your doctor. People usually tolerate this medicine well and usually start feeling better soon. Some people may get an upset stomach and taking it with a meal should help. Also, diarrhea can occur, and your pharmacist can advise you on how to lessen this. But, if you develop severe diarrhea, or if it lasts more than 2 days, let your doctor know, even if it happens weeks after finishing this medicine. You should also tell your doctor or pharmacist if you notice a rash, because it could be related to this medicine. More serious reactions can occur. You should read the Patient Information sheet to know which symptoms to watch for and when to report them. Dicloxacillin can interact with other medicines. You should talk to your pharmacist before taking any other medicines. Women should talk to their doctors before breastfeeding while taking this medicine. For best results, do not skip doses, and try to get plenty of rest.