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Doctor insights on: Cephalexin Good For Cold Flu Sinis Infection

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Dr prescribed antibiotics (keflex) for possible secondary infection from flu. Been on them for 2 days and now feel worse?! Is that normal?

Dr prescribed antibiotics (keflex) for possible secondary infection from flu. Been on them for 2 days and now feel worse?! Is that normal?

Well that depends: The awfulness of influenza usually peeks around day 2-3 of symptoms and persists for a good 5-7 days. So if your flu is just reaching it's normal peak, then yes, I'd say your worsening is expected. If you're past that peak though, worsening would not be expected.

If the concern is a secondary pneumonia or bacterial sinusitis following flu, keflex is not a standard treatment for either. ...Read more

Dr. Janice Alexander
9 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


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Being treated for infection in unhealed wounds caused by neuropathy. Prescription keflex 500mg tid. Prior fever, now cold, clammy, pouring sweat. Normal or ER?

Being treated for infection in unhealed wounds caused by neuropathy. Prescription keflex 500mg tid. Prior fever, now cold, clammy, pouring sweat. Normal or ER?

Infection: The above symptoms certainly deserve evaluation by a doctor. Given the inability to exam a patient over the internet, a trip to the doctor's office or ER is warranted. ...Read more

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Can people who have had polio with no symptoms, or flu-like illness ('abortive infection') - 95% have post polio syndrome?

Can people who have had polio with no symptoms, or flu-like illness ('abortive infection') - 95% have post polio syndrome?

No not true: Oeople who had asymptomatic polio myelitis with just flu like illness and no neyrological deficit means their anterior horn cells and other neurological areas like brain stem etc were not attacked and they will lead normal life an will not get post polio syndrome.Only 1% ofcases virus enters the nervous system, destroying the neurons and causing paralysis and lasting muscle weakness;later pps. ...Read more

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Been taking keflex 500mg 4 times daily for sinus infection. Have no symptoms other than low grade fever. How or when will I know if its going to work?

Been taking keflex 500mg 4 times daily for sinus infection. Have no symptoms other than low grade fever. How or when will I know if its going to work?

See below: Sinusitis is characterized by nasal congestion, purulent nasal discharge, headache and facial pain over the sinuses in the frontal and maxillary areas. Low grade fever alone would not indicate sinusitis. Sinusitis is usually self limited and does not require antibiotics unless severe or prolonged. Keflex is not the best drug for sinusitis. Ceftin, (cefuroxime) vantin or Augmentin would be better choices. ...Read more

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I have white discharge coming from my ureter accompanied by a back ache, no fever. I am sure it is not a yeast infection, I have been on keflex 500mg 3 x a day for an eye procedure and difulcan for a yeast infection.

I have white discharge coming from my ureter accompanied by a back ache, no fever. I am sure it is not a yeast infection, I have been on keflex 500mg 3 x a day for an eye procedure and difulcan for a yeast infection.

You: You should be seen again by your doctor if you are having yeast even while on diflucan (fluconazole). Usually Diflucan (fluconazole) should take care of a yeast infection within 1-2 days. You may need to have cultures taken or to be on another medication. If you do develop pain, fever, or vomiting then you would have to be seen immediately. ...Read more

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I was put on cephalexin for an outer ear infection1 day ago. I have nausea and fatigue. Am I just having side affects or the flu?

I was put on cephalexin for an outer ear infection1 day ago. I have nausea and fatigue. Am I just having side affects or the flu?

Both possible: It is certainly unusual for an "outer ear infection" to produce nausea and fatigue. Also strange presentation for influenza. Would check back with the doctor who gave you the cephalexin. ...Read more

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I read that the flu shot is made from antibiotics. Safe for people allergic to keflex and penicillin?

I read that the flu shot is made from antibiotics. Safe for people allergic to keflex and penicillin?

No/ Yes: Influenza vaccines are made with dead viral antigens or inactivated live virus. They are not made with antibiotics and can be given to anyone who is allergic to antibiotics. ...Read more

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I was wondering is cephalexin good for gum infection?

Be careful: An abscess might respond to cephalexin. However for most dental problems topical care is more important. Also, be careful about using left over antibiotics. Do you have a dentist? ...Read more

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On average, how long will a cold or 'flu infection take to show symptoms?

On average, how long will a cold or 'flu infection take to show symptoms?

Cold symptoms: Symptoms cold symptoms usually start about 2 or 3 days after you came in contact with the virus, although it could take up to a week. Symptoms mostly affect the nose. ...Read more

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How long is the common cold contagious for? The same applies for the flu and other common infections?

How long is the common cold contagious for? The same applies for the flu and other common infections?

Variable: You are most contagious for a few days before you peak symptoms start

for the flu you are also contagious for several days after you become smptomaic. ...Read more

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Is it normal to get 8 Infections in a year for young adult in college? Is it a concern? . Infections such as cold, flu, gastrointeritis

Yes: In fact this is very normal, especially if you live in a dormitory where there are common bathroom facilities. The best thing you can do to prevent infection is get vaccinated for influenza and meningococcal meningitis (if you haven't already), wash hands before you eat and before/after using the bathroom. Avoid handshakes with sick classmates. Don't share utensils, supplies and use hand sanitizer ...Read more

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I get persistent non productive cough when I get flue like infection which last continuously upto 3 months. Come back again when I get next flu or cold?

I get persistent non productive cough when I get flue like infection which last continuously upto 3 months. Come back again when I get next flu or cold?

Bronchospasm...: This likely represents bronchospasm as a result of the infection. It can be treated with bronchodilator and steroid inhalers, which should control the cough. See your doctor the next time this occurs so this treatment can be rendered. ...Read more

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What does the immune system do? If it fights infection, why does everyone still get the flu and the cold?

What does the immune system do? If it fights infection, why does everyone still get the flu and the cold?

What is the level of: General immunity for the person? Has the person developed antibodies to the specific viruses that they are being exposed to? Are person who is immunodeficient is more likely to become infected. Or if the person is exposed to a germ that is novel to them - they are more likely to be susceptible. ...Read more

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I've just found out my brother has a cold or flu infection, and he has been around my 2 month old baby; what do I do?

I've just found out my brother has a cold or flu infection, and he has been around my 2 month old baby; what do I do?

2 month old baby: You do not need to do anything if the baby is already exposed, watch for any cough and fever and if the baby develops fever and cough, take him/her to your pediatrician for check up and treatment. ...Read more

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I've been sick with a flu time cold for 21 days today. I started a new med- depakote- I'm so tired, could this be the infection still or a side effec?

I've been sick with a flu time cold for 21 days today. I started a new med- depakote- I'm so tired, could this be the infection still or a side effec?

See below: Either a cold or flu should be better within 7-14 d. There is a possibility that you could have a sinus or lung infection-not uncommon complications. Depakote can make you tired as well & it's levels should be monitored. Please see your doc to see what's going on & to get you feeling better. ...Read more

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How come I get cold shivers during a viral infection like bronchitis or flu?

How come I get cold shivers during a viral infection like bronchitis or flu?

Part of the process: It has to do with the body's immune response to a foreign body, in this case, it is to the virus which attacks various cells. As the body tries to fight that off, various other reactions may occur like fever and chills. Btw-the actual flu is not all that common and usually when one thinks they have it, aka infuenza, it is really something else or a different but more common viral infection. ...Read more

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What causes you to get cold shivers during a viral infection like bronchitis or flu?

What causes you to get cold shivers during a viral infection like bronchitis or flu?

Only in viral infect: Acute viral infections have other symptoms normally in addition to cough or bronchitis. Acute viral infections are normally a systemic disease. Flu, viral infection and systemic disease, will cause generalized aches, pains, fever which may be high. With high fevers the body temp rises and falls which causes the chills. Even this does not require antibiotics unless it persists. ...Read more

Dr. Lynne Weixel
289 Doctors shared insights

Keftabs (Definition)

Keftabs is a first generation cephalosporin which is a kind of cephalosporin type drug (anti-bacterial ...Read more