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Doctor insights on: Sinusitis Amoxicillin Dosage

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I was prescribed 1000mg of amoxicillin 3x/day for sinusitis. Is that a normal dose? It seems extremely high. I’m worried about side effects.

I was prescribed 1000mg of amoxicillin 3x/day for sinusitis. Is that a normal dose? It seems extremely high. I’m worried about side effects.

Somewhat high: This dose is often reserved for pneumonia, but has been used effectively for sinus disease. Side effects may include mucosal fungal infection, abdominal discomfort (take with food), diarrhea and sometimes even c.diff. Notify your physician of any new symptoms ...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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Amoxicillin did not treat my sinusitis, what can I do?

Not the best choice: Amoxicillin alone is generally ineffective for bacterial sinusitis. Call your doctor for another one- perhaps augmentin (amoxicillin and clavulanate) (amox-clav). Another possibility is that the infection is viral and antibiotics aren't going to treat it no matter which one you take. The vast majority of sinus infections are viral and need to just "run their course". ...Read more

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How long should it take for amoxicillin to stop sinusitis?

How long should it take for amoxicillin to stop sinusitis?

Depends: Depending on the situation, treatment in childhood starts at 10-14 days and if improvement is slow another week may be added. The problem of resistant organisms is seen occasionally & lack of any improvement in 3-5 days indicate need to use an alternate treatment. ...Read more

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Insufflating (snorting) amoxicillin? Has anyone done that to treat sinusitis?

Insufflating (snorting) amoxicillin? Has anyone done that to treat sinusitis?

YIKES: Nasal nebulized antibiotics have been tried, but there's no good evidence that they're any better than oral antibiotics. Crushing and snorting antibiotics sounds like a bad idea. You'd probably wind up swallowing most of it, anyway. ...Read more

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My daughter was given amoxicillin for bronchitis and sinusitis. She is having extremely watery bowels. Is yhis from the medicine? What should I do?

My daughter was given amoxicillin for bronchitis and sinusitis. She is having extremely watery bowels. Is yhis from the medicine? What should I do?

Antibiotic diarrhea: Definitely you need to speak to your daughters pediatrician about this. Most antibiotic associated diarrhea is a mild nuisance, but this sounds more serious so I would call today. You should check your childs 'volume status' -noting color of urine, how much, whether she makes many tears or not. She likely is dehydrated from this and I would take action now. ...Read more

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My daughter was diagnosed wt sinusitis yesterday and prescribed amoxicillin! She's 6. She has been throwing up every since... Is this ok?

My daughter was diagnosed wt sinusitis yesterday and prescribed amoxicillin! She's 6. She has been throwing up every since... Is this ok?

Nope: She is sensitive to this antibiotic and although stomach upset and vomiting is common with amoxicillin, this is not a good choice for her. Call her doctor for a change and stop giving her the amoxicillin. ...Read more

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On amoxicillin for sinusitis. I'm on the 8th day and I am still coughing like crazy at night from this sinus infection. When will the cough go away?

On amoxicillin for sinusitis. I'm on the 8th day and I am still coughing like crazy at night from this sinus infection. When will the cough go away?

Better antibiotic: Sinusitis is better treated with Levaquin (levofloxacin) since its tissue availability deep in sinus is better. Amoxicillin is better for soft tissue swelling/infection. Consult with your doctor for treatment of the cause of your sinusitis. Treat the cause, not the symptoms. ...Read more

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What home remedies can I use to cure a bladder infection? I'm also taking leftover antibiotics from sinusitis (amoxicillin), is that okay?

What home remedies can I use to cure a bladder infection? I'm also taking leftover antibiotics from sinusitis (amoxicillin), is that okay?

Maybe not, however: Bladder infections are generally from a particular type of bacteria which may not be susceptible to amoxicillin. As far as home remedies are concerned, cranberry juice has been used for years for this condition but it should not be used as a substitute for antibiotic therapy. See you physician always before starting any therapies (especially expired amoxicillin). ...Read more

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Do I need to take Flonase or any other nose spray for sinusitis? I'm on amoxicillin

Do I need to take Flonase or any other nose spray for sinusitis? I'm on amoxicillin

It depends on U symp: If u feel ok no need, but if u don't than u can take it. ...Read more

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I started taking amoxicillin friday;sinusitis; I have a test for chlamydia/gonhorrea monday. Will antibiotic mess up my STD results? Stop amox or not?

I started taking amoxicillin friday;sinusitis; I have a test for chlamydia/gonhorrea monday. Will antibiotic mess up my STD results? Stop amox or not?

Do not stop: Continue taking your antibiotics as prescribed. This will not "mess up" your testing for chlamydia / gonorrhea. Amoxicillin can treat these infections but should not alter a test after just a few days of antibiotics. ...Read more

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I have sinusitis strep throat, broncitis all at once. Seen 2 dr. I have amoxicillin, flowvent and a sinus spray. When would I know to go to emerg if need?

I have sinusitis strep throat, broncitis all at once. Seen 2 dr. I have amoxicillin, flowvent and a sinus spray. When would I know to go to emerg if need?

Give it time: If you have all of those symptoms at once you most likely have a viral upper respiratory infection. These take 10-14 days to fully resolve.
You only need to see you doctor again if you are getting much WORSE, no need to see them if they are the same but still there. A viral cough can last up to 28 days and still be normal. ...Read more

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Is amoxicillian used for pleurisy and sinusitis?

Can be: Amoxicillin would be used for these conditions if an underlying bacterial infection is confirmed or at least suspected. Otherwise, Amoxicillin will not help these conditions in any way. ...Read more

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If u are supposed to take 875mg of Amoxcillin twice a day but are only getting 875mg once a day is this still going to help the sinusitis?

Sinusitis: Antibiotics are often unnecessary in treating sinusitis. As important are nasal irrigation, decongestants, possibly nasal steroids and control of pain and swelling with NSAIDS. Amoxicillin has a half-life of about an hour. About 60% of a dose is excreted in urine within 6 to 8 hours. Detectable serum levels are present for 8 hours but not necessarily in therapeutic concentrations or in sinuses. ...Read more

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Can u get flare up symptoms from missing two night doses of Amoxcillin? Cause I take it for sinusitis. Supposed to take 875mg two times a day.

Not likely: You should take your medications as directed as close to the schedule as possible. It isn't the flare up of symptoms, but the incomplete eradication of bacteria. That can lead to chronic infection with more resistant bacteria and an infection harder to treat. ...Read more

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Is 875mg of Amoxcillin enough to take care of sinusitis? Cause I'm on one tablet twice a day. When should I feel better? Today will be day 3 on it.

Is 875mg of Amoxcillin enough to take care of sinusitis? Cause I'm on one tablet twice a day. When should I feel better? Today will be day 3 on it.

Saline irrigation: If the bacteria are sensitive to Amoxicillin, the dose is adequate. Usually by day 3-4 a person will notice some improvement. However, sometimes, sinusitis may require up to 3 weeks' treatment to totally clear. It will help to do sterile saline nasal rinses. Lying on your back and leaning head over bed below body, spray into nostril then move your head to both sides and back, then gently blow. ...Read more

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I'm prone 2 sinusitis & alergys. I live in a windy dry climate. What can I do besides keep taking amoxicillan?

I'm prone 2 sinusitis & alergys. I live in a windy dry climate. What can I do besides keep taking amoxicillan?

Chroinc sinusitis: See an allergist to test for allergy and optimize treatment. Patient with severe allergic rhinitis gets chronic sinusitis due to obstruction of the outflow tracts of paranasal sinuses. ...Read more

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Is sinusitis bacterial or viral? Meaning will Amoxcillin help me if have sinusitis?

Is sinusitis bacterial or viral? Meaning will Amoxcillin help me if have sinusitis?

Amoxicillin 4 sinus: 100% agree with Dr. Stephen Rothstein. For sinusitis caused by virus infection, no antibiotic treatment is needed. Acute sinus infection from bacteria is usually treated with antibiotic and Augmentin (amoxicillin and clavulanate) is the first chose. Amoxicillin is also acceptable. ...Read more

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Can SSRI make u feel hot? Cause I'm on fluoxetine and feel hot but could be from my sinusitis I don't know cause I'm on Amoxcillin to.

Hot inside or out?: Fever is different from surface heat. Is the antibiotic for a bacterial infection that had fever as a symptom? If not, it's useless. But discuss it w/ Dr - don't just stop. Same w/ the SSRI. Anytime you get a medication make sure you understand what to look for - good and bad. What to do and not to do. The more you know, the better it works. Ask. Even if Dr is busy, it's part of your Tx. ...Read more

Dr. Krishna Kumar
8 Doctors shared insights

Sinusitis (Definition)

A condition caused by an inflammation or swelling of the tissue lining your sinuses. Acute sinusitis usually starts with coldlike symptoms such as a runny, stuffy ...Read more


Dr. Philip Miller
1,140 Doctors shared insights

Amoxil (Definition)

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