Cephalexin (Keflex) Pharmacology Podcast
Real Life Pharmacology - Pharmacology Education for Health Care Professionals
Eric Christianson, PharmD; Pharmacology Expert and Clinical Pharmacist
4.9 • 773 Ratings
🗓️ 15 September 2022
⏱️ 12 minutes
🧾️ Download transcript
Summary
On this podcast episode, I discuss cephalexin pharmacology, adverse effects, drug interactions, and much more!
Penicillin allergies and cross-reactivity are common questions with regard to the use of cephalexin and I discuss this briefly in the podcast episode.
Cephalexin is a first-generation cephalosporin with its primary sweet spot being gram-positive bacteria like Staph and Strep species.
Warfarin, probenecid, zinc, and a couple of others are potential medications that can interact with cephalexin. I discuss this further in this podcast episode.
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Transcript
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| 0:00.0 | Hey all, welcome back to the Real Life Pharmacology podcast. I'm your host, pharmacist, Derek Christensen. |
| 0:05.8 | Thank you so much for listening today. Go check out Real Life Pharmacology.com. Go subscribe there. |
| 0:13.1 | You can get a free 31 page PDF on the top 200 drugs, simply in emails all it's going to cost you. |
| 0:20.3 | So kind of a no-brainer there. |
| 0:22.0 | Great resource if you're out in practice or if you're preparing for pharmacology exams |
| 0:27.6 | or board exams where medications are tested. |
| 0:31.2 | So go snag that for free at real-life pharmacology.com. |
| 0:36.8 | All right, let's get into the drug of the day today, and that is cephalaxin. |
| 0:42.6 | Brand name of this medication is Keflex, and this is a cephalosporin, as you could probably imply, |
| 0:51.9 | from the Ceph beginning of the word there. And it is a first-generation |
| 0:58.4 | cephalosporin. So if you remember previously had done Cephriaxone, and as we get to higher |
| 1:06.7 | generations, we generally get more and more gram-negative coverage. So Keflex and |
| 1:13.2 | being a first-generation cephalosporne, we are going to primarily have gram-positive coverage, |
| 1:21.6 | and gram-positive bugs include strep and staff species. Those are the most common targets that we're going to use a drug like Cephylaxen for. |
| 1:32.9 | With that said, there is potentially some activity against sensitive, |
| 1:38.5 | certain E. coli species, Klebsiella species, proteus species. |
| 1:45.1 | And as we get to talking about indications, urinary tract infection is sometimes an |
| 1:52.5 | indication for cephalaxon. |
| 1:55.0 | Generally not a first-line agent, but if we have susceptible species, we possibly can use cephalaxin in certain situations. |
| 2:07.6 | Now, most commonly where you're going to see cephalaxin used is skin and soft tissue infections. |
| 2:14.6 | Now, these are often staff or strep type infections, |
| 2:20.8 | which Keflex certainly will cover there. Other potential infections that may have, |
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