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Doctor insights on: Antibiotics Make You Feel Sick

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Why do antibiotics make you feel sick?

Why do antibiotics make you feel sick?

Side effects: Antibiotics can irritate the lining of your digestive tract. They also can kill the healthy bacteria in your intestines that keep everything in balance, leading to diarrhea and yeast infections. That's why it's important to only take antibiotics when they are medically indicated (i.e. For bacterial infections and not for viruses), and to take them correctly and finish the full course when you do.

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Dr. John Leander Po
1,117 Doctors shared insights

Antibiotic (Definition)

An antibiotic is a medicine that slows, stops, or kills germs. The germs are usually bacteria causing an infection in a person, so the person uses antibiotics to help his body get ...Read more


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Are antibiotics supposed to make you feel sick at first I feel really nauseous and sick she gave me a three day supply for an ear infection first pill?

Are antibiotics supposed to make you feel sick at first I feel really nauseous and sick she gave me a three day supply for an ear infection first pill?

No: Some antibiotics, like azithromycin, have a side effect for some patients that includes nausea. If this is a problem for you a call to your doc would be in order to consult about changing meds.

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I have had tonsillitis for 14 days now and I have took all my antibiotics for it. Today it has flared back really bad causing me to gag and feel sick?

I have had tonsillitis for 14 days now and I have took all my antibiotics for it. Today it has flared back really bad causing me to gag and feel sick?

Tonsillitis: If it is failing to improve on antibiotics, your doctor may want to review your medication and check you for mono. It is also possible you may have developed an abscess. All the best and I hope you start to feel better.

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Are you supposed to feel sick on your period because I feel really sick or is that from taking keflex my antibiotics?

Sick during period: Is not normal, it can be sign od problems, however Keflex is most likly cause. Get probiotic frm the pharmacy, over the counter

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I have a chest infection & I am on antibiotics. But I feel sick at some points during the day, & whist eating. Is this normal?

I have a chest infection & I am on antibiotics. But I feel sick at some points during the day, & whist eating. Is this normal?

Common: These are symptoms that could be potentially serious. Yous should discuss these with your physician. He/she will thotoughly evaluate you and let you know what's going on.

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I took a single dose of chlamydia antibiotics last week. Can I still feel sick from that medication after a week?

I took a single dose of chlamydia antibiotics last week. Can I still feel sick from that medication after a week?

Chlamydia Treatment: This is usually one gram of azithromycin. So, my response will be based upon that assumption. Yes. Antibiotics can cause yeast infections and some significant GI symptoms like upset stomach, nausea and diarrhea. Usually with time these symptoms should subside. Many people use yogurt and other 'pro bionics' products to help their GI tract recover.

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I've just completed two rounds of antibiotics for sinusitis. Now I've got laryngitis and I still feel sick. Should I go back to my doctor again?

I've just completed two rounds of antibiotics for sinusitis. Now I've got laryngitis and I still feel sick. Should I go back to my doctor again?

You may: Most Laryngitis are caused by viruses and are self limiting. But it is a good idea to consult your doctor as you still feel sick following Sinusitis.

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Tonsil abscess? . ..when pushed oozes out green puss and tastes terrible not tonsil stones... Antibiotics made me feel sick and have had for 2 months.

Tonsil abscess? . ..when pushed oozes out green puss and tastes terrible not tonsil stones... Antibiotics made me feel sick and have had for 2 months.

Otolaryngologist: This is a question for your otolaryngologist. A peritonsillar abscess usually produces more of an acute problem rather than a two month old process. I expect pus in the tonsillar tissue would cause a more dramat ic set of symptoms. Discuss these ongoing symptoms with your otolaryngologist.

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Diarrhea for 36 hours. Don't feel sick; a little bit tired, otherwise ok. No fever or chills. Should it stop by itself or is it serious? Antibiotics?

Diarrhea for 36 hours. Don't feel sick; a little bit tired, otherwise ok. No fever or chills. Should it stop by itself or is it serious? Antibiotics?

Self-limited: Most cases of acute diarrhea are self-limited, caused by infectious agents (e.g. viruses or bacteria), and do not require medication unless the patient is immunocompromised. Most important thing is adequate oral intake that can be achieved with soft drinks, fruit juice, broth, soup, and salted crackers. If persisted for more than few days, see MD.

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I got very ill (Infection) and was on antibiotics a long time. Ever since my digestive health is poor (reflux, nausea, diarrhea).what could cause this?

I got very ill (Infection) and was on antibiotics a long time. Ever since my digestive health is poor (reflux, nausea, diarrhea).what could cause this?

GI symptoms: This may or may not be related to the illness and antibiotics, but you need to be seen and evaluated, preferably by a GI doctor. Cl. difficile may be part of this, as may be simple alterations in gut bacteria (try eating yogurt). The reflux may be a variety of issues, many without relevance to your prior illness. See a doctor.

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I been puting antibiotic ointment on my belly button for days and I feel sick bully button leaking liquid dr said I'm fine but do I just clean it more?

I been puting antibiotic ointment on my belly button for days and I feel sick bully button leaking liquid dr said I'm fine but do I just clean it more?

Maybe not: Over cleaning and manipulating an inflamed area can make it worse and cause leakage of a small amount of fluid. On the other hand, if there has been leakage around this site for a while it could indicate an abnormal connection between your umbilicus and an underlying structure, such as your bladder. You should always feel comfortable seeking a second opinion.

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Hi, I have gastroparesis and was recently diagnosed with Small Intestinal Bacterial Overgrowth. Antibiotics make me so sick, how do I prevent nausea?

Hi, I have gastroparesis and was recently diagnosed with Small Intestinal Bacterial Overgrowth. Antibiotics make me so sick, how do I prevent nausea?

Few ways: U can crush the antibiotics up and take in smaller pieces in food over 5-10 minutes. Or u can take something like odansteron 15-30 min before taking the antibiotic. As a general rule, most antibiotics taken with food will help calm the nausea down. And also drinking plenty of water after taking them helps

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Is it necessary to treat bacterial sinusitis with antibiotics? Don't feel sick apart from congestion and runny nose. No pain or fever.

Is it necessary to treat bacterial sinusitis with antibiotics? Don't feel sick apart from congestion and runny nose. No pain or fever.

Sinusitis: It would depend on how the diagnosis is made. If your symptoms were less then 10 days then I would refrain from antibiotics.

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On antibiotics for uti, also on start of 2nd month of birth control. Nauseous, tired, dizzy, feel sick. Got period n 2 neg pregnant tests. Is it the meds?

Hard to know: These symptoms are so non-specific that they could be due to multiple different causes. See your doctor, provide a detailed history and let them examine and test you if necessary and you will find a rationale for what is occurring.

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28 female.2wk back ache in lower back, sides, bloating, feel sick and full. Tender t touch around belly button area. Just had antibiotics for a water infection?

28 female.2wk back ache in lower back, sides, bloating, feel sick and full. Tender t touch around belly button area. Just had antibiotics for a water infection?

Get seen immediately: This is very suspicious for an infection of some sort inside your abdomen. It could be a complication of your recent urinary tract infection, or entirely different; or perhaps your previous UTI diagnosis was mistaken. Whatever the cause, this could be very serious. Contact your doctor now, even after hours; or go to an emergency room or urgent care clinic immediatley. Good luck!

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Is my yellow nasal discharges reli needs anitbiotics? Any option? . I don't feel sick xcept of runny nose and a cough

Is my yellow nasal discharges reli needs anitbiotics? Any option? . I don't feel sick xcept of runny nose and a cough

Other option: Get a neil med sinus rinse bottle at your pharmacy with a box of saline packets and use as directed to wash the infection out off your sinuses. You may be surprised at how much gunk one person's head can hold. If you are dizzy and have vertigo, your doctor may have given you the antibiotic for an inner ear infection. If that is the case, use the rinse and. The prescription.

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Need advice on what is the the best way to deal with nausea being caused by an antibiotic?

Take with food: Unless the directions tell you not to, taking medicine with food may lessen the nausea. If it is severe, talk to your doctor about an alternative med.

Dr. Stephen Noga
1,712 Doctors shared insights

Nausea (Definition)

Nausea = abdominal upset ...Read more