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Doctor insights on: Unasyn Third Generation Penicillin

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What happens if you can't have a penicillin shot for syphilis?

What happens if you can't have a penicillin shot for syphilis?

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

Dr. Louis Gallia
3 doctors shared insights

Ampicillin And Sulbactam (Definition)

Ampicillin/sulbactam is a third generation penicillin which is a kind of penincillin type drug (anti-bacterial ...Read more


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When my son was little, he took some antibiotic called unasyn. Is that a penicillin?

When my son was little, he took some antibiotic called unasyn.  Is that a penicillin?

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

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Would the older or newer generation of cephalosporins antibiotics be more likely to cause anaphylaxis in patients severely allergic to penicillin?

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 more

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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?

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 more

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Please tell me how long it takes for penicillin to take effect?

Please tell me how long it takes for penicillin to take effect?

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

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How long does a shot of penicillin take to work?

How long does a shot of penicillin take to work?

Depends: It depends on the type of infection that is being treated and on the type of penicillin in the shot. ...Read more

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When does someone get penicillin?

When does someone get penicillin?

Penicillin: is used to treat bacterial infections when the organism is susceptible to it. ...Read more

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What is penicillin usually prescribed for?

What is penicillin usually prescribed for?

Infection: Any infection that is susceptible to it. In recent history, penicillin is used either for strep infections or syphilis. ...Read more

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What happens when an allergic person takes penicillin?

What happens when an allergic person takes penicillin?

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 more

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Has anyone suffered a severe anaphalatic reaction to penicillin months after taking it?

Has anyone suffered a severe anaphalatic reaction to penicillin months after taking it?

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 more

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Dr. Heidi Fowler
5 doctors shared insights

Unasyn (Definition)

Unasyn is a third generation penicillin which is a kind of penincillin type drug (anti-bacterial ...Read more