You should never take antibiotics unless specifically advised by your doctor. The fact that you are asking this question suggests that your family physician has not prescribed you these two medicines, or at least not at the same time, as he/she would have informed you of your dosage for each.
Furthermore, even though the internet is a fantastic research tool for pretty much everything and anything, you really shouldn't be taking medical advice from anyone other than a qualified medical practitioner - the risk is far too great. Never rely on the internet for remedial help unless it is from a certified site such as familydoctor.org. The site is staffed by trained professionals who offer quality advice. Any pharmacist will also answer a question like this for free, but I imagine they'll give you the same guidance - see your doctor.
Amoxicillin and cephalexin essentially act in the same way and come from the same family of medicines. The difference between the two is that amoxicillin is penicillin based, cephalexin is not. Both drugs tend to be used to treat the same things treat such as sinus infections, ear infections plus some skin infections, so there isn't really a reason for you to be using these two antibiotics at the same time anyway.
As I mentioned, access to antibiotics is restricted to prescription. One major reason for this is that by taking it you become more susceptible to contracting clostridium difficile colitis which can incapacitate you for a long time. C. Difficile is the most serious cause of antibiotic-associated diarrhoea (AAD). This can then lead to pseudomembranous colitis, a severe infection of the colon. It is often the result of eradication of the normal gut flora by antibiotics, hence the importance of only taking antibiotics when truly necessary.
Furthermore, even though the internet is a fantastic research tool for pretty much everything and anything, you really shouldn't be taking medical advice from anyone other than a qualified medical practitioner - the risk is far too great. Never rely on the internet for remedial help unless it is from a certified site such as familydoctor.org. The site is staffed by trained professionals who offer quality advice. Any pharmacist will also answer a question like this for free, but I imagine they'll give you the same guidance - see your doctor.
Amoxicillin and cephalexin essentially act in the same way and come from the same family of medicines. The difference between the two is that amoxicillin is penicillin based, cephalexin is not. Both drugs tend to be used to treat the same things treat such as sinus infections, ear infections plus some skin infections, so there isn't really a reason for you to be using these two antibiotics at the same time anyway.
As I mentioned, access to antibiotics is restricted to prescription. One major reason for this is that by taking it you become more susceptible to contracting clostridium difficile colitis which can incapacitate you for a long time. C. Difficile is the most serious cause of antibiotic-associated diarrhoea (AAD). This can then lead to pseudomembranous colitis, a severe infection of the colon. It is often the result of eradication of the normal gut flora by antibiotics, hence the importance of only taking antibiotics when truly necessary.
