What is the shelf life for Cephalexin 500mg? RX was filled 10/25/05. Can I take it & be effective? I just got laid off from my job, and cannot afford to go to the doctor plus get a prescription for my upper respiratory infection. (No insurance either). Could I take these out of date antibiotics and will they be effective?
Thank you,
Jill
What is the Shelf Life for Cephalexin 500mg? The Prescription was Filled 10/25/05.
Question posted by gordonfam on 9 Feb 2012
Last updated on 7 March 2020
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6 Answers

The antibiotics are very old. It is highly likely that they won't be as effective as fresh ones (if they are effective at all).
Ok Marvell. Just trying to get rid of an upper respitory infection without having to come up with $ for a doctor. Thank you very much.
The prescription was filled on 09/06/16
The shelf life of cephalexin capsules and tablets is three years when stored correctly.
Yes, take the antibiotics. There is a great deal of research on this subject. Many studies have been conducted over the years which prove most prescription drugs remain quite potent and in fact, do not degrade years, sometimes even decades, after the labeled expiration date.
I have a prescription for cephalexin 250 mg capsules that was issued to my dog in 2012 is it still good for me to give to them I cannot get to the vet till Tuesday because of the holiday and I believe she has a bad infection in her mouth
My pharmacist told me the shelf life of an antibiotic is 3 yrs . I would recommend calling the pharmacy where you got the antibiotic if it falls with in 1 -3 yr range. They can tell you if the pill you have has expired based off the numbers printed from their pharmacy on your bottle.
Those are too old to be effective, you could potentially create a infection that is even harder to get rid of. Get yourself a fresh supply. I have ordered antibiotics from vet catalogs and if you have a local farm and feed store you can get some antibiotics from them too. Don't believe the hype that animal antibiotics are different or impure, the manufacturers are all the same. More threats by the government to control the masses.
Related topics
infections, bacterial infection, cephalexin, doctor, insurance, prescription, antibiotics
Further information
- Cephalexin uses and safety info
- Cephalexin prescribing info & package insert (for Health Professionals)
- Side effects of Cephalexin (detailed)
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