Skip to content
View in the app

A better way to browse. Learn more.
allnurses

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.
Discussion

what drug to use?

I have a quick question here. What drugs can a doctor perscribe for a patient who is allergic to Penicillin? What I am trying to ask is, what other antibiotic rather than Penicillin can a patient take if he is allergic to Penicillin?

Featured Replies

I have a quick question here. What drugs can a doctor perscribe for a patient who is allergic to Penicillin? What I am trying to ask is, what other antibiotic rather than Penicillin can a patient take if he is allergic to Penicillin?

Cephalosporins, sulfa drugs, etc...It depends on what is being treated.

  • Experts

Exactly, it depends on what the bug is that they are trying to kill.

  • Author
Cephalosporins, sulfa drugs, etc...It depends on what is being treated.

I see, So Vancomycin will not be a good choice of drugs b/c it is similar to Penicillin. Am I right?

Actually, with Cephalosporins you need to check cross-sensitivity to PCN....I believe that if one is allergic to PCN, there is and increased chance of similar reaction with Cephalosporin use as well?!!

  • Experts

Vancomycin ahould not be used as a first-line antibiotic unless the patient is resistant to other meds or it is a medical necessity that it be used, such as for infections where the drug must cross the blood-brain barrier, etc.

This is one of the reasons that we are running into MRSA more frequently, Vancomycin has been the drug of choice in the past for this, but because it has been over used, there are bugs now that are resistant to that.

  • Author
Vancomycin ahould not be used as a first-line antibiotic unless the patient is resistant to other meds or it is a medical necessity that it be used, such as for infections where the drug must cross the blood-brain barrier, etc.

This is one of the reasons that we are running into MRSA more frequently, Vancomycin has been the drug of choice in the past for this, but because it has been over used, there are bugs now that are resistant to that.

Does Vancomycin has cross-sensitivity effect to Penicillin? And how about Cephelosporin does it has cross-sensitivity effect to Penicillin?

I am confused.:imbar

  • Author
Actually, with Cephalosporins you need to check cross-sensitivity to PCN....I believe that if one is allergic to PCN, there is and increased chance of similar reaction with Cephalosporin use as well?!!

I think Tetracycline can work then?:) What do you think?

  • Experts

What is this in relation to? There are different drugs used for different infections. It isn't that just any other antibiotic can replace PCN. It is what other antibiotics that the infection is sensitive to.

PCN was one of the old first-line antibiotics. There are now many newer antibiotics that can do the same, if not better, work.

I have read somewhere that Patient allergic to penicilin, don't have to take cephalosporiN (cross allergie !)

They can use CIPRO (CIPROFLOXACIN).

This is what I read.

  • Experts

Again, it is the most important to do a antibiotic sensitivity study by microbiology before trying to prescribe...................

Cipro actually has its problems. It is not used in children, due to a higher incidence of seizures for one reason. My mother actually had a grand mal seizure after taking it. For me, I would avoid taking it unless there was nothing else available to me, and then I would be very cautious with it.

Yes, I've read that if the patient is allergic to penicillin, they usually have a cross sensitization to cephalosporin(sulfa drugs)

I think the cross-sensitivity issue has to do with the type of reaction one has to PCN (or any other drug for that matter).

I also think you might get more complete responses from pharmacy-type folks!

Guest
This topic is now closed to further replies.
Go to topic listing

Currently Reading 0

  • No registered users viewing this page.

Account

Navigation

Search

Search

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.