How Long Does Cephalexin Stay In Your System After You Finish It?

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4 Answers

Monica Stott Profile
Monica Stott answered
Cephalexin stays in the system for approximately 72 hours after the course of drugs has been finished.

  • What is Cephalexin?
Cephalexin is a drug that is usually used to treat infections such as urinary infections, skin or ear infections. It is an antibiotic that will treat the bacteria that is causing the infection. Cephalexin was first sold as Keflex and is sometimes still called that today.
Cephalexin is often prescribed to patients who are allergic to penicillin. This is a good alternative to penicillin which is something that many people are allergic to. It is not quite as effective but is good for sensitive patients. Care is still taken when prescribing Cephalexin as hypersensitive patients may still have some slight allergic symptoms to the drugs.
  • Side effects from Cephalexin
As with most drugs, there can be adverse side effects for some patients who take it. If any side effects do occur, the patient should stop taking the drug immediately and see a doctor as soon as possible so an alternative drug can be prescribed. The side effects can include mild stomach pain, headaches, diarrhea, agitation, dizziness, indigestion and joint pain.

  • Other things to consider when taking Cephalexin
Your doctor may tell you not to consume any alcohol while you are on the course of antibiotics. While alcohol may not have any immediate negative effects, it will mean that the antibiotic will not work as effectively and therefore may not heal your infection. Whilst on antibiotics it is best to eat healthily and avoid any alcohol at all to give your body the best chance of recovery.

Cephalexin should not be taken if you have any stomach problems, kidney disease, liver disease, diabetes or if you are malnourished. Never take Cephalexin for anything other than what the doctor prescribes it for and it will not treat other infections such as colds or the flu.
Jennifer Bone Profile
Jennifer Bone answered
Cephalexin is an antibiotic from the Cephalosporin family that is available by prescription to treat bacterial infections.  Cephalexin attaches itself to the cell wall of bacteria which eventually kills it making it a very effective antibiotic.  It's often prescribed for respiratory infections, ear infections, strep throat, urinary tract infections and sometimes skin and bone infections.  A 500mg dose is the most common and can be taken in tablet, capsule, or liquid form  Generally it is taken either every 6 or 12 hours over a course of 10 to 14 days.  The length of time it will stay in your system depends on a number of factors including age, weight, dose etc but it can be up to about 72 hours or more.
Seth Pratt Profile
Seth Pratt answered
As with most all medication they have a 72 hour half life after
last dosage administration.  Cephalexin is an Atypical Anti-Biotic  So to answer your question 3 full days
with proper flushing of the digestion system.  Cranberry Juice, Water, 5HTP,
L-Tyrosine, ~Vitamin B-12 XR~ form.  All these are available OTC.  Hope
this helps.  God Bless :)
Muhammad Nadeem Profile
Muhammad Nadeem answered
It is an antibiotic used to treat bacterial infection. Its half life is 0.9 hours, so, it is out of the system within few hours after use. For details, visit Cephalexin

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