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Doctor insights on: Cephalexin First Generation Cephalosporin

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Is it a bad idea for someone allergic to penicillin safely take keflex, a cephalosporin?

Yes: Cephalexin (keflex) is a first generation cephalosporin and a very close cousin to penicillin. Though it is not 100% true that all penicillin allergic individuals are also allergic to cephalexin, there is a high likelihood of that happening. ...Read more

Dr. Ira Katz
276 doctors shared insights

Keftabs (Definition)

Keftabs is a first generation cephalosporin which is a kind of cephalosporin type drug (anti-bacterial ...Read more


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Should you resume keflex daily to suppress UTI if you got klebsiella UTI on it and were treated with cephalosporin?

Should you resume keflex daily to suppress UTI if you got klebsiella UTI on it and were treated with cephalosporin?

No: The usual drugs used to prevent frequently recurring uti's are sulfa/trimethoprim( septra (sulfamethoxazole and trimethoprim) or bactrim), norfloxacin, or Nitrofurantoin given in relatively low doses each night. I do not recommend Nitrofurantoin (macrobid) because of its potentially serious side effects. Penicillins and cephalosporins are usually not used for this indication. ...Read more

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How safe is keflex in first trimester?

Probably safe: Keflex is considered safe (category b) for 2nd and 3rd trimesters, but it has not been as thoroughly tested during the 1st trimester. Use only if no other options., and discuss your concerns with your doctor. ...Read more

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I had my first kidney stone with colic. I'm two pills away from being done with the keflex. Is it normal to just now feel a UTI coming on?

I had my first kidney stone with colic. I'm two pills away from being done with the keflex. Is it normal to just now feel a UTI coming on?

Yes: Keflex is typically used from gram positive bacteria, mostly staph. The #1 source of a UTI is e. Coli. The other causes would be proteus. Keflex does very little against gram negative bacteria. Therefore, it is possible to have a UTI coming on. See your physician and have a urinanalysis done with a culture and sensitivity. ...Read more

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7-8 enlarged cervical lymph nodes. Firm, painless, first one in feb. Trying keflex, then biopsy. Headache woke me up, had all day. Related?Call dr/er?

7-8 enlarged cervical lymph nodes. Firm, painless, first one in feb. Trying keflex, then biopsy. Headache woke me up, had all day. Related?Call dr/er?

Go see the doctor,,,: The headache is not likely related to the lymph nodes, but it may be a side reaction to the keflex, or any other drug. Regardless of this, whatever the reason, it's a good idea to see your doctor for a headache like that and for the lymph nodes to be sure it's not anything very serious, like cancer or meningitis or anything else. So it would be smart to see your doctor soon. Best of luck. ...Read more

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Is keflex strong enough for staph infection n arm that is moving quickly. See line going from elbow up arm after only 12 hours of first symtoms?

Is keflex strong enough for staph infection n arm that is moving quickly. See line going from elbow up arm after only 12 hours of first symtoms?

Staph is dangerous: Nope. This is the worst drug to be prescribed for the current epidemic of drug resistant staph infections. If you have a line going up from your elbow on this drug you need to get urgent medical attention. ...Read more

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Charity case - vascular specialist needed my eight toes (excluding pinky toe) are all swollen and turning blue. Went to the hospital emergency room twice, first time, gave me keflex and sent me home. Feet were no better..Went back yesterday and asked fo

Charity case - vascular specialist needed my eight toes (excluding pinky toe) are all swollen and turning blue.  Went to the hospital emergency room twice, first time, gave me keflex and sent me home.  Feet were no better..Went back yesterday and asked fo

I : I assume that you're not old enough to qualify for medicare, or someone would have suggested that. You may be able to qualify for medicaid, which a needs-based state program (as opposed to age-based, like medicare). The medicaid program varies a lot from state to state, so you should probably contact your local social services office to discuss new jersey's coverage options. It would probably also be useful to contact the nearest medical school. There are three in new jersey and one of them may have faciltites in your area. Medical schools recieve federal funding for their trainees and often have a lower threshhold for accepting patients without insurance. In the meanwhile, you might start taking a daily aspirin. Since i haven't met you and know nothing about your medical history i can't make a specific recommendation in this regard, but Aspirin may reduce the likelihood of additional clots forming. Also, if you smoke, then please stop now. That's the best single thing you can do to save your feet if this is a blood flow problem. ...Read more

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Dr. Linda Callaghan
58 doctors shared insights

Cephalosporin Antibiotic (Definition)

Cephalosporins are a kind of anti-bacterial ...Read more