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Doctor insights on: Allergic To Penicillin Can I Use Doxycycline

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Suffering from lupus, allergic to penicillin, and was prescribed doxycycline. How safe is it to take this?

Suffering from lupus, allergic to penicillin, and was prescribed doxycycline. How safe is it to take this?

Safe: There is no relation between penicillin and doxycyclin, you can take it, they are from separate classes of medications. ...Read more

Dr. Lonnie Smith
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Regime for doxycycline to treat mild tetanus? F, 22, 135 pounds. Allergic to penicillin, had reaction to metronidazole after 3 days. Real advice plz

Regime for doxycycline to treat mild tetanus? F, 22, 135 pounds. Allergic to penicillin, had reaction to metronidazole after 3 days. Real advice plz

Cannot advise: The replies in this forum are limited to answers to general medical questions and for educational purposes. Diagnostics and treatment recommendations are deferred to your primary healthcare provider. I hope you are feeling better soon. ...Read more

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Is there doxycycline in penicillin?

Is there doxycycline in penicillin?

No: Penicillin does not contain doxycycline, and there is no cross-reaction between Doxycycline and penicillin for most penicillin allergic patients. ...Read more

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Is doxycycline as effective towards treating syphilis as the penicillin injections?

Is doxycycline as effective towards treating syphilis as the penicillin injections?

Quite effective: Here is a study that compared them that show equivalent effectiveness: http://cid.Oxfordjournals.Org/content/42/6/e45.Full. ...Read more

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Can you tell me if doxycycline or vantin (cefpodoxime) is a penicillin or ethromycin?

Can you tell me if doxycycline or vantin (cefpodoxime) is a penicillin or ethromycin?

Neither: Vantin (cefpodoxime) is a cephalosporin: not a penicillin, but somewhat related. Doxycycline is a type of tetracycline, completely unrelated to both penicillins and macrolides (the class of drugs that Erythromycin belongs to). ...Read more

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3 years ago, i had chlamydia. Got penicillin shot, and 2 weeks of twice daily doxycycline. The first 4 days, i puked after first pill. Should i worry?

3 years ago, i had chlamydia. Got penicillin shot, and 2 weeks of twice daily doxycycline. The first 4 days, i puked after first pill. Should i worry?

No: Nausea and vomiting are unfortunate side effects of antibiotics. Doxycycline is one of the antibiotics that can commonly have that side effect in some people. Make sure that you do not mention it as an allergy but rather side effect since it could limit useful antibiotics used commonly for various infections. ...Read more

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With Cefzil & rocephin (ceftriaxone) I get hives.Should I take penicillin shot for syphilis treatment.This is a 3rd infection. Used doxycycline for first 2.

With Cefzil & rocephin (ceftriaxone) I get hives.Should I take penicillin shot for syphilis treatment.This is a 3rd infection. Used doxycycline for first 2.

Condoned: Penicillin is still the first line treatment for syphilis. The most effective treatment for syphilis is not to get it, use a condom. The more often you get it, the greater your risk for antibiotic resistance. Also, with this being your third episode, you are now at high risk of contracting chlamydia and HIV. You need to get tested for those too. Stop playing Russian roulette with your life. ...Read more

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Dr. Debra Rosenblatt
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