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Azithromycin 250 mg Capsules – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Prescription only (POM) Details

Medicine strength:
250 mg
Contains active substance:

Patient leaflet - Azithromycin 250 mg capsules

What Azithromycin 250 mg Capsules is and what it is used for

Azithromycin capsules contains the active substance azithromycin. Azithromycin is an antibiotic that belongs to a group of antibiotics known as macrolides, which block the growth of susceptible bacteria.

Azithromycin capsules is taken for the treatment of the following infections: Adults and adolescents weighing 45 kg and over

  • Infections of the tonsils (tonsillitis) or throat (pharyngitis) caused by streptococcal bacteria
  • Bacterial sinus infections (sinusitis)
  • Bacterial infections of the middle ear (otitis media)
  • Pneumonia (community-acquired pneumonia, not contracted in a hospital)
  • Bacterial infections of the skin and underlying tissues

    • Infections of urethra and cervix caused by Chlamydia trachomatis bacteria
    • Infections of urethra and cervix caused by Neisseria gonorrhoeae bacteria. Azithromycin should be used in combination with another antibiotic that is selected by your doctor or pharmacist. Adults:
    • Bacterial infections in patients with long-term inflammation of the lungs (chronic bronchitis)

What you need to know before you take Azithromycin 250 mg Capsules

Do not take Azithromycin Capsules

  • if you are allergic to azithromycin, erythromycin, any macrolide or ketolide antibiotic, or any of the other ingredients of this medicine (listed in section 6).

Warnings and precautions

Talk to your doctor or pharmacist before taking Azithromycin if you have or have had any of the following conditions:

  • heart problems (e.g. problems with your heart rhythm or cardiac insufficiency) or low levels of potassium or magnesium in your blood: these conditions may contribute to serious cardiac side effects of azithromycin
  • liver problems: your doctor may need to monitor your liver function or stop the treatment
  • severe diarrhoea after administration of any other antibiotics
  • localised muscle weakness (myasthenia gravis), as the symptoms of this disease may worsen during treatment
  • or if you are taking any ergot derivatives such as ergotamine (used to treat migraine) as these medicines should not be taken together with Azithromycin capsules. Stop taking this medicine and contact your doctor immediately (see also “Serious side effects” in section 4):
  • if you feel you are having an allergic reaction (e.g. difficulty in breathing, swelling of the face or throat, rash, blistering).
  • if you notice any of the symptoms as described in section 4 related to serious skin reactions including Stevens-Johnson syndrome, toxic epidermal necrolysis, drug reaction with eosinophilia and systemic symptoms (DRESS) and acute generalised exanthematous pustulosis (AGEP), which have been reported in association with azithromycin treatment.
  • if you feel you have an abnormal heartbeat or palpitations, get dizzy or faint when taking Azithromycin.

    • if you develop signs of liver problems (e.g. dark urine, loss of appetite or yellowing of the skin or whites of the eyes).
    • if you develop severe diarrhoea during or after treatment. Do not take any medicine to treat your diarrhoea without first checking with your doctor. If your diarrhoea continues or reappears within the first weeks after treatment, please also inform your doctor. Superinfection

Your doctor may observe you for signs of additional bacterial or fungal infections that cannot be treated with Azithromycin capsules (superinfection).

Sexually transmitted infections

Your doctor may test for and exclude a potential infection with syphilis, a sexually transmitted disease that may otherwise progress undetected and be diagnosed delayed. Furthermore, in any case of sexually transmitted bacterial infections your doctor will initiate laboratory follow-up tests to monitor the success of therapy.

Children and adolescents

If you weigh less than 45 kg, other medicinal products containing azithromycin exist that may be more convenient for you to take.

Other medicines and Azithromycin Capsules

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

Taking Azithromycin capsules at the same time as some other medicines may result in side effects. Therefore, it is particularly important that you tell your doctor if you are using any of the following medicines:

  • Atorvastatin and other medicines from the statins group (to lower blood cholesterol and prevent heart disease, including heart attacks and strokes)
  • Ciclosporin (to prevent rejection of organ transplants by the body)
  • Colchicine (to treat gout and familial Mediterranean fever)
  • Dabigatran (to prevent and treat blood clot formation (anticoagulant))
  • Digoxin (to treat heart diseases)
  • Warfarin or similar medicines used to thin the blood (anticoagulants)
  • Medicines that may cause the heart muscle to take longer to contract and relax than usual (QT prolongation), such as the following:

    • Quinidine, procainamide, dofetilide, amiodarone and sotalol (to treat an irregular heartbeat, including a too fast or too slow heartbeat - cardiac arrhythmia)
    • Pimozide (to treat mental illness)
    • Citalopram (to treat depression)
    • Moxifloxacin and levofloxacin (antibiotics)
    • Cisapride (to treat disorders in the gastrointestinal tract)
    • Hydroxychloroquine or chloroquine (to treat autoimmune diseases including rheumatoid arthritis, or to treat or prevent malaria)

Pregnancy, breast-feeding

If you are pregnant or breast-feeding, think you maybe pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine. Pregnancy

Your doctor will decide if you should take this medicine during pregnancy, only after making sure that the benefits outweigh the potential risks.

Breast-feeding

Azithromycin capsules passes into breast milk. Your doctor will decide therefore whether you should stop breast-feeding or should avoid treatment with Azithromycin capsules taking into account both the benefit of breast-feeding for your child and the benefit of therapy for you. Driving and using machines

Azithromycin capsules has a moderate influence on the ability to drive and use machines. Azithromycin capsules has been reported to cause dizziness, drowsiness and seizures, as well as problems with seeing and hearing in some people. These possible side effects may have an influence on your ability to drive and use machines.

Azithromycin capsules contain sulfur dioxide

This medicine contains sulfur dioxide (E220). May rarely cause severe allergic (hypersensitivity) reactions and wheezing (bronchospasm).

Information on sodium content

This medicine contains less than 1 mmol sodium (23 mg) per capsule, that is to say essentially ‘sodium-free’.

How to take Azithromycin 250 mg Capsules

Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.

The amount of Azithromycin capsules that you need to take each day depends on the bacterial infection that you are being treated for and the specific treatment course that your doctor or pharmacist has instructed you to follow.

Adults and adolescents weighing at least 45 kg

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(excluding codes) Perforated: Neo Sans. 8 pt TevaArt Ref: PID: 262943_s1 P: Azithromycin UK Capsules 250mg 4 6 ZAG 28 November 2025

Version: 5

Length: Width: Depth:

500 mm

110 mm

-

3

1

1000 mg or 2000 mg* taken as a single dose

2

Infection

Infections of the tonsils (tonsillitis) or throat (pharyngitis) caused by

streptococcal bacteria

Bacterial sinus infections (sinusitis)

Bacterial infections of the middle ear

(otitis media)

Bacterial infections in patients with

long-term inflammation of the lungs

(chronic bronchitis)*

Pneumonia (community-acquired

pneumonia, not contracted in a hospital)#

Bacterial infections of the skin and

underlying tissues

Infections of urethra and cervix caused by Chlamydia trachomatis bacteria

Infections of urethra and cervix caused by Neisseria gonorrhoeae bacteria.

Treatment course with azithromycin There is a 3-day or a 5-day treatment course for these infections, and the amount of Azithromycin capsules to take each day is described for these treatment courses below.

3-day treatment course

500 mg taken once daily for 3 days. 5-day treatment course

500 mg taken on the first day of treatment and then 250 mg taken once daily for the following 4 days.

1000 mg taken as a single dose

10 mm

500 mm

10 mm

Use in children and adolescents

If your weight is less than 45 kg or you are not able to swallow this medicinal product, ask your doctor or pharmacist as other medicinal products containing azithromycin are also available that may be more appropriate for you.

Method of administration

For oral use.

Azithromycin capsules should be taken by mouth as a single daily dose. Capsules should be swallowed whole with some water. The capsules should be taken at least one hour before or two hours after a meal.

If you take more Azithromycin Capsules than you should

If you take more Azithromycin capsules than you should then you may feel unwell. Typical signs of an overdose are vomiting, diarrhoea, abdominal pain and nausea. Tell your doctor or contact your nearest hospital emergency department immediately.

If you forget to take Azithromycin Capsules

If you forget to take Azithromycin capsules take it as soon as you can, as long as this is at least 12 hours before the next dose is due. If it is less than 12 hours left to your next dose, skip the missed dose and take the next dose at the usual time. Do not take a double dose to make up for a forgotten dose.

If you stop taking Azithromycin Capsules

If you stop taking Azithromycin capsules too soon, the infection may return. Take Azithromycin capsules for the full time of treatment, even when you begin to feel better. If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse.

Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Serious side effects

Stop using Azithromycin capsules and seek medical attention immediately if you notice any of the following symptoms:

  • sudden wheeziness, difficulty in breathing, swelling of eyelids, face or lips, rash or itching especially affecting the whole body (anaphylactic reaction, frequency not known)
  • rapid or irregular heartbeat (cardiac arrhythmia or torsades de pointes tachycardia, frequency not known)
  • dark urine, loss of appetite or yellowing of the skin or whites of the eyes, which are signs of liver disorders (hepatic failure or hepatic necrosis (frequency not known)).
  • severe diarrhoea with abdominal cramps, bloody stools and/or fever may mean that you have an infection of the large intestine (antibiotic-associated colitis, frequency not known). Do not take medicines against diarrhoea that inhibit the bowel movements (antiperistaltics).
  • reddish non-elevated, target-like or circular patches on the trunk, often with central blisters, skin peeling, ulcers of mouth, throat, nose, genitals and eyes. These serious skin rashes can be preceded by fever and flu-like symptoms (Stevens-Johnson syndrome or toxic epidermal necrolysis, frequency not known).
  • widespread rash, high body temperature and enlarged lymph nodes (DRESS syndrome or drug hypersensitivity syndrome, rare (may affect up to 1 in 1,000 people)).
  • a red, scaly widespread rash with bumps under the skin and blisters accompanied by fever. The symptoms usually appear at the initiation of treatment (acute generalised exanthematous pustulosis, rare (may effect up to 1 in 1,000 people)). Other side effects

Very common (may affect more than 1 in 10 people)

  • diarrhoea

Common (may affect up to 1 in 10 people)

  • headache
  • being sick (vomiting), stomach pain, feeling sick (nausea)
  • changes in blood test results (lymphocyte count decreased, eosinophil count increased, basophil count increased, monocyte count increased, neutrophil count increased, blood bicarbonate decreased)

    Uncommon (may affect up to 1 in 100 people)

    • thrush (candidiasis) - a fungal infection of the mouth and vagina, other fungal infections
    • pneumonia, bacterial infection of the throat, inflammation of the gastrointestinal tract, respiratory disorder, inflammation of the mucous membrane inside the nose, vaginal infection
    • changes in the number of white blood cells (leukopenia, neutropenia, eosinophilia)
    • platelet count increased
    • reduction in the proportion of all blood cells in the total blood volume (hematocrit decreased)
    • allergic reactions, swelling of the hands, feet and face (angiooedema)
    • lack of appetite
    • nervousness, difficulty sleeping (insomnia)
    • feeling dizzy, feeling drowsy (somnolence), change in your sense of taste (dysgeusia), sensation of pins and needles or numbness (paraesthesia)
    • impaired vision
    • ear disorder
    • spinning sensation (vertigo)
    • feeling your heartbeat (palpitations)
    • hot flush
    • sudden wheeziness, bleeding from the nose
    • constipation, wind, impaired digestion (dyspepsia), inflammation of the lining of the stomach (gastritis), difficulty in swallowing (dysphagia), swollen belly, dry mouth, belching (eructation), mouth ulceration, increased salivation
    • rash, itching, hives (urticaria), dermatitis, dry skin, abnormally increased sweating (hyperhidrosis)
    • swelling and pain in the joints (osteoarthritis), muscle pain, back pain, neck pain
    • painful urination (dysuria), kidney pain
    • menstrual bleeding at irregular intervals (metrorrhagia), testicular disorder
    • swelling due to fluid retention, especially of the face, ankles and feet (oedema, face oedema, peripheral oedema)
    • weakness, tiredness, general feeling of being unwell, fever
    • chest pain, pain

      • abnormal laboratory test results (e.g. blood or liver tests)
      • post procedural complication

Rare (may affect up to 1 in 1,000 people)

  • feeling irritated
  • liver problems, yellowing of the skin or eyes
  • increased sensitivity to sunlight

Not known (frequency cannot be estimated from the available data)

  • reduced number of red blood cells due to increased cell breakdown which can cause tiredness and pale skin (haemolytic anaemia)
  • reduction in number of platelets which can lead to bleeding and bruising (thrombocytopenia)
  • feeling angry, aggressive, feeling of fear and concern (anxiety), acute confusional state (delirium),
  • hallucination
  • fainting (syncope)
  • fits (seizures)
  • reduced sensation to touch, pain and temperature (hypoaesthesia)
  • feeling hyperactive
  • change in your sense of smell (anosmia, parosmia)
  • total loss of your sense of taste (ageusia)
  • muscle weakness (myasthenia gravis)
  • abnormal electrocardiogramm (ECG) heart tracing (QT prolongation)
  • deafness, reduced hearing or ringing in your ears (tinnitus)
  • low blood pressure
  • inflammation of the pancreas causing severe pain in the belly and back (pancreatitis)
  • your tongue changes colour
  • joint pain (arthralgia)
  • kidney inflammation (interstitial nephritis) and kidney failure

Reporting of side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet.

You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.

How to store Azithromycin 250 mg Capsules

Do not store above 25°C.

Keep this medicine out of the sight and reach of children.

Do not use this medicine after the expiry date which is stated on the carton. The expiry date refers to the last day of that month.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

Contents of the pack and other information

What Azithromycin Capsules contains

  • The active substance is azithromycin.
  • The other ingredients are cellulose microcrystalline, sodium laurilsulfate and magnesium stearate. The capsule is made of gelatin, sulfur dioxide (E220) and the colouring agents titanium dioxide (E171), FD & C Blue 2 (E132) and indigo carmine (E132). What Azithromycin Capsules looks like and contents of pack

These are light and dark blue capsules.

Each capsule contains 250 mg of the active substance azithromycin (as azithromycin dihydrate). Azithromycin 250 mg Capsules are available in packs of 2, 4, 6 or 100 capsules, although not all pack sizes may be marketed.

Marketing Authorisation Holder

Teva UK Limited, Ridings Point, Whistler Drive, Castleford, WF10 5HX, United Kingdom. Manufacturer

Pliva Hrvatska d.o.o. (Pliva Croatia Ltd.), Prilaz baruna Filipovića 25, 10 000 Zagreb, Croatia. This leaflet was last revised in November 2025.

PL 00289/1570 262943_s1 4

6

5

Azithromycin capsules should be used in

combination with another antibiotic that

is selected by your doctor or pharmacist.

*only for adult patients

# for adult patients oral treatment may follow an initial intravenous treatment

10 mm

500 mm

10 mm

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 00289/1570

Last revision stated in the text: November 2025 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Azithromycin 250 mg capsules

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Azithromycin
Strength 250 mg
Pharmaceutical form Oral capsule
A white or almost white powder filled in size “0” hard gelatin capsules, white opaque cap & white opaque body.
How is it taken Oral
Excipients Lactose monohydrate, Maize starch, Magnesium stearate, Gelatin, Titanium dioxide
Pack sizes 4 capsule, 6 capsule
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 36 months
Storage Store below 25°C and in the original package
Drug group (ATC) Antibacterials for systemic use, macrolides, ATC-code: J01FA10
  1. J Antiinfectives for systemic use
    1. J01 Antibacterials for systemic use
      1. J01F Macrolides, lincosamides and streptogramins
        1. J01FA Macrolides
          1. J01FA10 azithromycin
Marketing authorisation PL 00289/1570, PL 30684/0281 (first authorised 13 May 2025)
Marketing authorisation holder DAWA Limited
Codes GTIN 5017007014942, 5017007014966 · BNF 05010500

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.1.0 of 12 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.