Is Cephalexin A Penicillin Antibiotic?

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brad Says:


IS IT A FORM of penicillin? Can it be used for sinus infections?



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Debbie Says:

Cephalexin is not a form of penicillin. I am allergic to penicillin, so I am given Cephalexin all the time. It can be used for a number of infections including sinus infections.

Cephalexin is in a group of drugs called cephalosporin antibiotics and is used to fight bacteria in the body. It works by interfering with the bacteria's cell wall formation, causing it to rupture, and killing the bacteria.

Cephalexin is used to treat infections caused by bacteria, including upper respiratory infections, ear infections, skin infections, and urinary tract infections.

http://www.drugs.com/cephalexin.html

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2
Jeff Says:

I have a penicillin alergy and was prescribed cephalexin. I broke out in a ash on my chest within a few hours of taking cephalexin. I waited a day and tried it again and got the same results. Dr. sait to quit taking it but also that my results were not typical for people with penicillin allergies.


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3
Ernie Says:

I have had a cough and lots of phlegm for 4 days and a feverish feeling now - have some cephalexin 500 mg \dated 7/9/10 - can I use these ?

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4
RPAC Says:

YOU MOST LIKELY HAVE BRONCHITIS WITH PHLEGM/CONGESTION AND FEVERS. CEPHELEXIN IS NOT SPECIFIC FOR UPPER RESPIRATORY. ITS MORE FOR SKIN INFECTIONS AND OTHER MICROBIALS. YOU WOULD PROBABLY BENEFIT MORE FROM PENICILLIN, AMOXICCILIN, ZPACK/AZYTHROMYCIN, AVELOX(ALTHOUGH THIS ONE IS TOO STRONG) WHICH ARE MORE SPECIFIC TO UPPER RESPIRATORY TRACT INFECTIONS. SEE YOUR DOCTOR BEFORE TAKING ANY OF THESE THOUGH

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5
Guy Says:

RPAC, you obviously dont know what you are talking about becasue you say that cephalexin is not used for upper respiratory infections, and mainly skin. in the cephalaxin Consumer Medicine Information pamphlet, it specifically says it is used for the following:

• respiratory tract (chest, lungs, tonsils, throat)
• sinuses
• ears (middle ear infection)
• skin
• genitourinary tract (kidney, bladder, prostate).

This information was found on the following website:
betterhealth.vic.gov.au/bhcv2/bhcmed.nsf/pages/gxccephc/$File/gxccephc.pdf

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6
Matthew Says:

i have been allergic to penicillin since a child, i come out in rashes.
i just had an abscess drained and i was put onto cephalexin, same response to penicillin.
the only anti b i can take is erythromycin...food for thought, pity i keep getting stupid gp's that dont listen to me.

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7
HELGA Says:

HOW CAN YOU SAY CEPHALEXIN IS NOT A FORM OF PENICILLIN WHEN IT HAS PENICILLIN IN IT ,

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HELGA Says:

EVEN HOSPITALS DONT LISTEN JUST BEEN GIVEN CEPHALEXIN I HAVE BAD REACTION NEXT TIME I HAVE PENICILLIN I COULD ACTUALLY DIE WHY DONT THEY LISTEN IT WAS WRITTEN ON EVERY FORM BUT STILL GAVE IT TO ME

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9
Sonja Says:

I was given cephalexin and it almost killed me the doctor at the Emergency told me that this was a form of penicillin and that I may or may not be allergic to penicillin if I ever had to take it, he recommended me not taking it. So I wont take any of these two medications.

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10
Nikki Pooh Says:

How soon after taking 2 antibiotics, sulfamethoxazole and cephalexin for bacteria/cellulitis in the lower leg will I feel an improvement. My leg, foot and toes no longer swells but I still have pain.

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11
3star8 Says:

Cephalexin is not penicillin but there can be a cross-hypersenitivity for people who have a penicillin allergy and use this. Any antibiotic considered in the beta-lactam classification can cause a cross-hypersensitivity in anyone with a history of penicillin allergy. Cephalosporins, cephems, carbapenums, and penums are classes of antibiotics, in the beta-lactam classification, that may cause a reaction in someone with a penicillin allergy and Keflex (cephalexin) is a first generation cephalosporin. A lot of people with penicillin allergy can still take Keflex or others, but most hospitals and physicians will avoid any antibiotic in the classification due to the possibility of cross-hypersensitivity.

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12
chararat07 Says:

My four year old daughter have a mouth sore so her pediatrician gave her cefalexin...after taking the med rashes appeared all over her body so we stopped giving her the antibiotic..her dad had a history of allergic reaction on penicillin and im afraid my daughter have the same allergic reactions on penicillin

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13
Becca Says:
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I have a sinus infection and can't afford to go to the dr. But it's bad I can tell it, I have some cephalexin of my daughters , would it be safe for me to tske them ; however I'm allergic to penicillin ????

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14
kim Says:

I have gotten a sinus infection after a cold and i havent taken penicillin since i was 10 and got a rash from it but i have a script for cephalexin and i already had taken it just now. Should i be looking for other signs rather than a rash for this use.

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JUSTSAYN Says:

I wouldn't. That's exactly what I did and I had a anaphylaxis reaction. Throat swelling, lips swelled, short of breath, ears and throat itching. Wasn't fun...

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16
lisa Says:
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You should have relief within 48-72hrs. The increased swelling contributes to pain in your leg. Any redness should start to lessen and not look so angry red. Hope you get better.oh yeah been a nurse 20 years

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17
virginia Says:

i seem to be allergic to most anti-biotics except Keflex. Is that good for sinutitis?

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18
Ashlee Says:
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It has been clinically proven that around 10% of patients with penicillin allergies are also allergic to cephalexin.

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19
Faith Says:

I'm really allergic to penicillin so when I got Cephalexin I read the information and thought my doctor made a mistake. I called the pharmacist and they said, only 3% of people react to cephalexin that are allergic to penicillin so you may be in the 3% . I live close to a hospital so i feel a little better i guess you can take the medication while sitting in your car at the emergency entrance of the hospital. I hate how toxic antibiotics are, I think a day will come a super probiotic will be created like they made during world War II that saved numerous soldiers lives. This empowered the body to wellness, without the insane and sometimes tragic side effects of antibiotics; the most toxic antibiotic is Cipro. Buyer beware

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Rani Says:

I got allergic reaction (swelling of face & lips) to Penicillin when I was 6 yrs old, now I am 55. I have heard that if the allergic medicine is not taken for several yrs you don't get allergic reaction. Now I have been prescribed Keflex according to my urine culture report for UTI due to bilateral DJ long term stents in obstructed ureters due to retroperitoneal fibrosis because of which bilateral moderate hydronephrosis has occured and kidneys are moderately damaged. Currently I have no symptoms (no fever or urine difficulty) but report says Staphylococcus epidermidis (MSSE) sensitive to drugs all of which are like penicillin. doc has given keflex, plz advice whether to take or not.

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