Amoxil: What Is It?

Amoxil (amoxicillin) is a commonly used penicillin antibiotic. It is listed in the World Health Organization’s List of Essential Medicines.

Amoxil is usually prescribed for curing bacterial infections in middle ear, throat, skin and urinary tracts such as tonsillitis, pneumonia, bronchitis, gonorrhea, Salmonella and chlamydia infections, acne and other diseases.

It is not considered to be dangerous for children and pregnant or breastfeeding women.

How Does It Work?

Amoxil is a beta-lactam antibiotic: the principle of its action is that it slows down the growth of bacteria by interfering with the bacteria synthesis and destroying its cell walls.

This antibiotic is very similar to ampicillin but due to a different chemical formula it is more effective: the absorption is better.

Amoxil just like other antibiotics doesn’t cure viral infections. It cannot cure cold or flu which are mainly caused by viruses.

Can It Be Used With Other Medicine?

You should consult your doctor before taking Amoxil with methotrexate or pemetrexed. It may worsen the side effects: nausea, vomiting, low level of blood cells, dizziness and anemia.

Allopurol may cause skin rash. Achromycin and doxycycline make Amoxil less effective.

Amoxil decreases the effectiveness of birth-control pills like ethinyl estradiol. It also affects the results of a few medical tests. Clavulanic acid increases the effectiveness of Amoxil.

How to Use It?

Amoxil should be taken exactly as prescribed by a doctor. Symptoms usually disappear after two or three days but it doesn’t mean that all the bacteria are destroyed and the treatment can be stopped.

If you stop taking Amoxil before the end of the course, the disease can take over again. It is also not advised to take the medicine for a longer period of time.

If you miss a dose, don’t take a double dose next time, but try to take a missed dose as soon as possible. It is OK to take it in the wrong time.

But if you want to take it just in time before the next dose, it is better to skip it. Overdosing might cause slow-thinking, severe skin rash or even seizures. Call the emergency as soon as those symptoms are noticed.

Amoxil is produced in tablets, capsules, chewable tablets and oral suspensions. Chewable tablets must be chewed before swallowing.

The drug must be stored in a dark and dry place at a room temperature (around 23-25 C). Liquid Amoxil should be thrown away after two weeks if it wasn’t used.

What Side Effects Can It Cause?

It is very common that patients have stomach pain, nausea, have diarrhea, vaginal itching, headache and swollen, black or “hairy” tongue when taking Amoxil.

More serious side effects involve fever, swollen gums or glands, mouth or skin sores, symptoms of cold or flu, trouble breathing, cough; itching, joint pain, general or muscle weakness, unusual bleeding or easy bruising, and watery or bloody diarrhea.

A doctor must be contacted at once if you experience any of those side effects.

If you notice any sighs of allergic reactions, for example, hives, swelling of your face, tongue, lips, throat or difficulty breathing, you must call the emergency immediately.


Amoxil should not be used if you suffer from an allergy to penicillin or any other antibiotics that contain it.

It is strongly recommended to tell your doctor about the allergy to cephalosporin antibiotics or any other allergies, asthma, liver or kidney diseases, blood clot disorder and mononucleosis.

If you have phenylketonuria, you have to inform your doctor about it because chewable tablets contain phenylalanine.

Although Amoxil is considered to be harmless for breastfeeding women, it may harm a baby, so it is better to consult a healthcare provider before taking it.