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allergic to penicillin can i use doxycycline

A 56-year-old member asked:
Dr. Nayla Mumneh
28 years experience Allergy and Immunology
Safe: There is no relation between penicillin and doxycyclin, you can take it, they are from separate classes of medications.

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A male asked:
Dr. Hunter Handsfield
52 years experience Infectious Disease
Just as effective: Yes, doxycycline is just as effective as penicillin, but you must take all of the pills more or less on time. You're probably non-infectious after a f ... Read More
A 42-year-old member asked:
Dr. Maziar Rezvani
20 years experience Allergy and Immunology
Yes: Tetracyclines (e.g. Doxycycline), quinolones (e.g. Ciprofloxacin), macrolides (e.g. Clarithromycin), aminoglycosides (e.g. Gentamicin) and glycopeptid ... Read More
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A 29-year-old female asked:
Dr. Tanya Russo
24 years experience Pediatrics
Cannot advise: The replies in this forum are limited to answers to general medical questions and for educational purposes. Diagnostics and treatment recommendations ... Read More
A 46-year-old member asked:
Dr. Brant Ward
12 years experience Allergy and Immunology
Likely, not certain: The majority of people who are told they are allergic to penicillin are not actually so (they get rashes for other reasons, e.g.). Of those that are a ... Read More
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A 35-year-old male asked:
Dr. John Chiu
Dr. John Chiu answered
56 years experience Allergy and Immunology
Yes, one of the opti: But you should also try to find out whether you are allergic or intolerant to Flagyl or Cipro. Seek the help of an allergist since diverticulitis ten ... Read More
A 51-year-old member asked:
Dr. John Chiu
Dr. John Chiu answered
56 years experience Allergy and Immunology
Probably, but..: It would be safer to get testing to penicillin before taking ceclor. On the other hand, if the reaction was that of joint ache, fatigue, fever etc fro ... Read More
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A 53-year-old member asked:
Dr. Michael Ein
47 years experience Infectious Disease
Yes: Ceftriaxone/rocephin is a cephalosporin antibiotic. It is chemically unrelated to sulfa drugs and there is no cross allergenicity.
A 51-year-old member asked:
Dr. Martin Raff
55 years experience Infectious Disease
Yes: These penicillin derivatives are in an entirely different class of compounds than erythromycin. It should always be remembered, however, that individ ... Read More
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A 48-year-old member asked:
Dr. Joel Gallant
35 years experience Infectious Disease
For what?: That depends on what you're taking it for.
A 48-year-old member asked:
Dr. Gary Sandler
53 years experience Dentistry
For what?: Ampicillin is part of the penicillin class of antibiotics. While Erythromycin is usually considered an alternative antibiotic with individuals who ar ... Read More
A 53-year-old member asked:
Dr. Robert Ramirez
17 years experience Allergy and Immunology
Maybe: You have about a 2-5% chance to also be allergic to cefuroxime. You may want to talk to your allergist about testing to penicillin first to confirm t ... Read More
A 41-year-old member asked:
Dr. Steven Tucker
26 years experience Internal Medicine
Maybe but avoid: Most people do not have true allergies to medicines. Some are better described as an intolerance. Antibiotics are important in life, so i would a. ... Read More
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A 51-year-old female asked:
Dr. Michael Gabor
32 years experience Diagnostic Radiology
They: are in the same class of antibiotics, so there may be cross-reactivity with respect to potential allergic reactions.
A member asked:
Dr. Thomas Josa
38 years experience Allergy and Immunology
OK: Clindamycin is unrelated to PCN or Sulfa so there is no allergic cross sensitivity
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A 29-year-old female asked:
Dr. Tony Ho
Dr. Tony Ho answered
13 years experience Infectious Disease
Yes: Ciprofloxacin is a quinolone, and has no cross-reactivity with the others mentioned.
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A 50-year-old member asked:
Dr. Andrew Murphy
28 years experience Allergy and Immunology
Avoidance: If one is allergic to penicillin then avoidance of penicillin like medications is a requirement. Other classes of antibiotics should be fine but becau ... Read More
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A male asked:
Dr. Powlin Manuel
50 years experience Allergy and Immunology
Yes, you can.: Yes, you take ancef (cefazolin) if you are allergic to erythromycin.
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A 30-year-old member asked:
Dr. Alex Martinez
Specializes in Allergy
Maybe: Penicillins (like amoxil) & cephalosporins (like keflex) are both beta-lactam antibiotics named because of their ringed chemical structure. Allergy to ... Read More
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A 30-year-old member asked:
Dr. Maziar Rezvani
20 years experience Allergy and Immunology
Maybe: Penicillin allergy is usually secondary to either the beta-lactam components or the minor determinants. If you are found to be allergic (via skin tes ... Read More
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A 32-year-old male asked:
Dr. Derek Isenberg
15 years experience Emergency Medicine
Very likely: There's a very small, less than 1% chance of cross-reaction between penicillin and a cephalosporins. If you had a severe reaction to penicillin, you' ... Read More
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A 30-year-old member asked:
Dr. Maziar Rezvani
20 years experience Allergy and Immunology
Possibly: You may be allergic to other synthetic penicillins as well as cephalosporins. Honestly, there are so many alternatives to these antibiotics that you ... Read More
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A 30-year-old member asked:
Dr. James Ferguson
45 years experience Pediatrics
Yes: It is known that 60-70% of those thought penicillin allergic are not, skin testing in a protected setting can usually provide more accurate status. No ... Read More
A 46-year-old female asked:
Dr. Justin Greiwe
11 years experience Allergy and Immunology
Not likely: Just because you have an allergy to Bactrim doesn't put you at increased risk for developing an allergy to cipro (ciprofloxacin). There are lots of op ... Read More
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