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Unasyn Third Generation Penicillin
Doxycycline: Doxycycline for 2-4 weeks is recommended if penicillin cannot be given, or sometimes ceftriaxone. However, penicillin is by far the best drug. If you had a severe penicillin allergy in the past, then probably penicillin should be avoided. Otherwise, it still might be the best choice for you. Discuss it with your doctor or, even better, an infectious diseases or STD specialist. ...Read more
Unasyn: Unasyn is an antibiotic that combines a type of penicillin (called ampicillin) with sulbactam. This drug was developed to deal with bacteria that destroy part of the penicillin chemical structure, thus making these bacteria immune to the antibiotic. The sulbactam inactivates the bacterial resistance, allowing the penicillin portion to be effective. ...Read more
Would the older or newer generation of cephalosporins antibiotics be more likely to cause anaphylaxis in patients severely allergic to penicillin?
See below: Persons with type 1 immediate hypersensity to penicillin antibiotics should generally avoid taking cephalosporin antibiotics because of the low but real risk of cross allergenicity. Safe alternative antibiotics include vancomycin, septra, macrolides, tetracyclines, aztreonam, clindamycin, zyvox, quinolones etc. ...Read moreSee 2 more doctor answers
I may need cephalosporin therapy with a suspected penicillin allergy. How does it work? Do I take a 3rd generation by mouth and sit in an ER waiting room with a buddy and an epipen?
Penicillin allergy: Among all patients reporting penicillin allergy, 85 to 90% will tolerate a penicillin, either because they were never allergic or because they had an earlier allergy that subsequently resolved. Among penicillin skin test-positive patients, approximately 2% will react to a cephalosporin. ...Read moreSee 1 more doctor answer
Question unclear: If you mean how long to begin to have improvement of symptoms it may take some time because they are often the result of the body's reaction to the organism. Also depends upon what the pcn is treating. If strep throat, never. Pcn begins to inhibit the growth of bacteria and then the wbcs help finish the job. This is complex. ...Read more
Varies: Some reactions are mild, such as hives alone. Others are more serious, with breathing problems and blood pressure drop. Some reactions (like some kinds of rashes) are not actually allergies, but different reactions that may or may not recur when you take the medicine. While it may be easier to just avoid penicillin, if it's important, you can find out if you have a "true" allergy by testing. ...Read moreSee 1 more doctor answer
No: Anaphylactic shock can only occur while you are actively exposed to the thing you are allergic too. It will not happen months after an exposure. It is more likey that an accidental exposure occurred with out the person realizing it.If they had a reaction with out a known exposure. ...Read moreSee 1 more doctor answer
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