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Doctor insights on: Amoxicillin 875 Mg Sinus Infection

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Dr. Adam Smith
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Dr. John Thaler
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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


Dr. Adam Smith
Board Certified
11 years in practice
380K people helped
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Dr. Adam Smith
Board Certified
11 years in practice
380K people helped
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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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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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How long does it take a sinus infection to clear up? I am taking amoxicillin 500 mg for it.

How long does it take a sinus infection to clear up? I am taking amoxicillin 500 mg for it.

Sinus infection: Simple cases could clear in a week but bad cases can take two months of antibiotics to clear. If not better in a week or so a CT of the sinuses can be helpful both to confirm the diagnosis and to help determine the severity and potential need for surgical intervention. ...Read more

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Dr. Shari Jackson
6 doctors shared insights

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. Adam Smith
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