Azax - use | dosage | side effects

This article was medically reviewed by M.Pharm, Marko Tanaskovic on Thu, 27 Dec 2018. To read more about an author, click here.

Azax is medicine that contains an active substance called azithromycin. It belongs to group of drugs called macrolide antibiotics.

This medicine works by killing bacteria, therefore it is used to treat different type of infections:

  • Bacterial infections of the upper respiratory tract, such as:
    • sinusitis,
    • tonsillitis,
    • pharyngitis,
    • bacterial bronchitis.
  • Inflammation of the middle ear (otitis media).
  • Skin and soft tissue infections.
  • Urinary tract infections.

This drug kills a wide range of bacteria and is classified as a highly effective antibiotic.


  • It should be avoided in patients allergic to the active substance azithromycin or other similar drugs:
    • clarithromycin,
    • erythromycin,
    • telithromycin, and others.
    • If you are experiencing symptoms of an allergy, such as:
      • itching,
      • redness,
      • swelling,
      • difficulty breathing, immediately contact your doctor.
  • It should be used only with extra precautions in patients with arrhythmias, especially those with prolonged QT interval, because Azax pills may worsen condition in these patients.
  • It may cause the gout infection that is manifested by diarrhea, therefore if you are experiencing diarrhea while using this medicament, contact your doctor.
  • It is excreted via the liver, and should be used with extra precautions in patients with liver disorders.
  • This medicine should be used only with extra precautions in patients with kidney disorders or myasthenia gravis.

Use of Azax during pregnancy and breastfeeding

There is no data whether it is harmful to fetus. However, you can use Azax during pregnancy only if the benefit to the mother outweighs the risk to the child.

There is no data whether this drug passes into breast milk. It is recommended to avoid breastfeeding while using this medicament.

Azax dose and use

  • Usual recommended dose is Azax 500 mg once a day, for three days.
  • Another dosage regimen: first day you can take 500 mg, and from 2-nd to 5-th day you should take Azax 250 mg once a day.
  • These capsules may be used in children whose body weight is greater than 50 kg, while in children whose body weight is less than 50 kg, it is recommended to take Azax syrup.
  • It should be taken regardless from food, as food does not affect the efficacy.
  • Azax and alcohol combined should be avoided.

Use with other medications (Interactions)

It should be avoided in combination with the following drugs:

  • Drugs used to treat heartburn (antacids):
    • aluminum hydroxide,
    • magnesium hydroxide,
    • sodium bicarbonate, and others. If you are using these medicines, you need to make a pause of 3 hours between taking antacids and this drug.
  • Drugs used to treat blood clotting disorders (so-called. blood thinners), such as:
    • warfarin (Farin),
    • acenocoumarol (Sinkum 4),
    • heparin, and others. Concomitant use of these medications increases the risk of bleeding.
  • Digoxin, used to treat heart failure.
  • Ergotamine derivatives, such as:
    • ergotamine,
    • dihydroergotamine. These drugs are used to treat migraines. Concomitant use with these drugs, increases the risk of ergotism (serious adverse event).
  • Nelfinavir, used to treat HIV (AIDS). Nelfinavir increases the concentration of Azax in the blood.

Tell your doctor about all medications and herbal products you are using.

Azax side effects

It may cause the following side effects:

  1. nausea,
  2. vomiting,
  3. diarrhea,
  4. constipation,
  5. bloating,
  6. abdominal pain,
  7. headache,
  8. visual impairment,
  9. hearing loss,
  10. dizziness,
  11. tingling (paraesthesia),
  12. infections in your mouth,
  13. gout infections,
  14. low white blood cells count,
  15. allergy, and others.

Tell your doctor if you are experiencing any side effects.

Information on this website are provided for educational purposes only and are not intended for medical advice, diagnosis or treatment.

If you have any concerns or questions about your health, you should always consult with a physician or other health-care professional.