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Doctor insights on: Ampicillin 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. Payam Mehranpour
71 doctors shared insights

Principen (Definition)

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


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Can I take ampicillin if I have an allergy to penicillin? Thanks in advance.

Can I take ampicillin if I have an allergy to penicillin? Thanks in advance.

No: If you are truly allergic to PCN then Ampicillin is closely related. I would recommend seeing an allergist to evaluate your PCN allergy. Many people who think or were told they are allergic actually are not. Even among people who were allergic many lose their sensitivity over time. ...Read more

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How come doctors dont prescribe ampicillin to treat syphilis if ampicilin is still penicillin?would it be effetive in treating very early exposure?

Get the shot: Oral penicillins like ampicillin have never been studied against syphilis, and many people wouldn't take it for the 2-4 weeks necessary, especially with usual side effects like diarrhea. Ampicillin soon after exposure probably would prevent syphilis, but there are no data on what dose would be needed. If exposed, you need penicillin by injection. Don't cut corners w/ such a dangerous infection. ...Read more

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When my son was little, he took some antibiotic called unasyn (ampicillin and sulbactam). Is that a penicillin?

When my son was little, he took some antibiotic called unasyn (ampicillin and sulbactam).  Is that a penicillin?

Unasyn (ampicillin and sulbactam): Unasyn (ampicillin and sulbactam) 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

Dr. Tony Ho Dr. Ho
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My urine culture showed an e coli resistant to penicillin and ampicillin, why did the doc prescribed me cefixime that is related to penicillin

Dr. Tony Ho Dr. Ho
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Different class: Cefixime is related, but a different class and generation; it was specifically created to kill things like e coli resistant to the original penicillin and ampicillin. ...Read more

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Will i still be able to take erythromycin if I am allergic to ampicillin & penicillin?

Will i still be able to take erythromycin if I am allergic to ampicillin & penicillin?

Yes: Yes. Erythromycin and penicillins are not chemically related and there is no risk of cross allergenicity. ...Read more

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What is ampicilina? Is is like penicillin?

What is ampicilina? Is is like penicillin?

Ampicllin: Ampicillin is a chemically modified form of penicillin designed so as to amplify the activity of penicillin against gram-negative organisms. It has exactly the same spectrum of activity and the antibacterially active component is identical. If you are allergic to one you are allergic to all penicillin derivatives. ...Read more

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Dr. Darrin Cunningham
71 doctors shared insights

Omnipen (Definition)

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