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Doctor insights on: Amoxicillin 875 Mg Sinus Infection

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Dr. Peter Baumann
Board Certified, Obstetrics and Gynecology
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Taking amoxicillin for a sinus infection & a couple days after I noticed swelling, itching, & discharge in my vagina. Now my symptoms seem milder. ?

Taking amoxicillin for a sinus infection  & a couple days after I noticed swelling, itching, & discharge in my vagina. Now my symptoms seem milder. ?

Yeast infection: Unfortunately, antibiotics like amoxicillin not only kill the bacteria that in your case caused the sinus infection, but also the lactobacillae present in the vagina. That in turn promoted the growth of candida, I suspect, and you ended up with a yeast infection. If your vaginal symptoms are ceasing, your lactobacilli may be recovering. ...Read more

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Dr. Andrea Brand
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Dr. Michael Gabor
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Sinus (Definition)

In anatomy, a sinus is a cavity within a bone or other tissue. Most commonly found in the bones of the face and connecting with the nasal cavities. Sinus (anatomy), description of the general term paranasal sinuses, air cavities in the cranial bones, especially those near the nose, including: the maxillary sinuses, also called the maxillary antra and the largest of the ...Read more


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Dr. Bernstein Joel
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Went to dr for possible sinus infection. Been dizzy/lightheaded, sinus pressure, headache, ear ache. Gave me amoxicillin 875 mg 3xday. Been less than 48 hrs and runny nose now. Dizzy/sinus pressure more today. How long til it works?

Went to dr for possible sinus infection. Been dizzy/lightheaded, sinus pressure, headache, ear ache. Gave me amoxicillin 875 mg 3xday. Been less than 48 hrs and runny nose now. Dizzy/sinus pressure more today. How long til it works?

VIRAL INFECTION: Basic assumption is that your doctor gave you treatment for a bacterial infection. Inasmuch as 90 to 95% of upper respiratory infections are viral, there is no answer to your question. If you have a bacterial infection, it may take 3 to 5 days for you to feel well. With no culture of the nose and no pus in the nose, i believe you have a viral infection and think the antibiotic will not work. ...Read more

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Dr. Patrick Melder
Board Certified, ENT and Head and Neck Surgery
21 years in practice
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I have got a sinus infection for over a month. I've taken1000 mg of amoxicillin for 28 days and it has still not gone. What should I do?

I have got a sinus infection for over a month. I've taken1000 mg of amoxicillin for 28 days and it has still not gone. What should I do?

Amox not great: Amoxicillin is not a great drug for sinusitis. Amoxicillin + clavulante (augmentin) is preferred. A short course of steroids (prednisone) may be helpful as well. But if you have had symptoms this long, i would see your local ent. There are some newer technologies to open your sinuses up in the clinic... Using balloon technology like angioplasty: acclarent.Com. ...Read more

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Dr. Tarek Hamid
Board Certified, Dentistry
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Dr. Lonnie Smith
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Infection (Definition)

Infections are invasions of some other organism (fungus, bacteria, parasite) or viruses into places where they do not belong. For instance, we have normal gut bacteria that live within us without causing problems; however, when those penetrate the bowel wall and enter the bloodstream, ...Read more


Amoxicillin (Definition)

Amoxicillin is in the penicillin class of antibiotics. All penicillins are distinguished by the presence of a beta-lactam ring, and are known to kill bacteria by inhibiting synthesis (production) ...Read more


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Dr. Andrea Brand
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