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Quick Facts
Azithromycin is a macrolide antibiotic used for certain bacterial infections and does not treat common viral infections such as colds or flu.
Uses
What is Azithromycin Tablet & Important Details
Azithromycin is a macrolide antibiotic used to treat certain infections caused by susceptible bacteria. It is available in several formulations and should be used only when prescribed for an appropriate infection.
- Used for certain bacterial infections of the lungs and respiratory tract.
- May be prescribed for some sinus, throat, ear, skin, and sexually transmitted infections.
- It may also be used for certain Mycobacterium avium complex infections.
- It does not work against viruses that cause colds or influenza.
- It is usually taken once daily when prescribed orally.
- The exact treatment depends on the infection, age, formulation, and medical history.
Antibiotics should not be used simply because symptoms resemble a previous infection. Unnecessary use can contribute to antibiotic resistance.
How does Azithromycin work (mechanism of action)?
Azithromycin works mainly by interfering with bacterial protein production. Without these proteins, susceptible bacteria cannot grow and reproduce normally.
- The medicine reaches the site of infection through the bloodstream and tissues.
- It enters susceptible bacterial cells.
- Azithromycin binds to part of the bacterial ribosome.
- This interferes with the production of proteins needed by the bacteria.
- Bacterial growth is slowed or stopped, allowing the body to clear the infection.
Its antibacterial action does not mean it will treat every bacterial infection; the bacteria must be susceptible to azithromycin.
Specialized or Off-Label Uses of Azithromycin
Azithromycin has some specialized uses that require medical supervision and may differ between countries and clinical situations.
- Prevention or treatment of certain disseminated MAC infections in people with suppressed immunity.
- Long-term prevention of recurrent chest infections in selected patients.
- Certain infections caused by organisms susceptible to macrolide antibiotics.
- Selected specialist uses where an alternative antibiotic is considered unsuitable.
Off-label treatment should be based on a clinician’s assessment rather than self-treatment.
Conditions That Azithromycin Will Not Treat
Azithromycin is an antibacterial medicine, so it does not treat infections caused by viruses or other organisms that are not susceptible to it.
- Common cold
- Influenza (flu)
- Most uncomplicated viral sore throats
- Most viral coughs and bronchitis
- COVID-19 caused by SARS-CoV-2
- Fungal infections
Taking an antibiotic when it is not needed increases the risk of side effects and antibiotic resistance.
Benefits
What are the benefits of taking Azithromycin Tablet
When the infection is caused by bacteria that respond to azithromycin, appropriate treatment can help control the infection and reduce related symptoms.
- Helps treat susceptible bacterial infections.
- Convenient once-daily oral dosing for many treatment regimens.
- Available in tablet, capsule, and liquid forms.
- Can be useful when treatment with a macrolide antibiotic is appropriate.
- May be used for selected respiratory, skin, and other bacterial infections.
- Has specialized uses in some patients with weakened immunity.
The benefit depends on using the medicine for the correct infection and following the prescribed regimen.
Side Effects
What are the most common side effects of Azithromycin?
Most common effects involve the digestive system and are usually mild, although symptoms that are severe or persistent should be discussed with a healthcare professional.
- Diarrhea
- Nausea
- Vomiting
- Stomach or abdominal pain
- Headache
- Changes in taste
- Dizziness
Antibiotics can occasionally lead to thrush or other changes in normal body microorganisms.
What are the serious side effects of Azithromycin?
Serious reactions are uncommon but can require prompt medical attention.
- Fast, slow, or irregular heartbeat
- Fainting or severe dizziness
- Yellowing of the skin or eyes
- Dark urine or unusually pale stools
- Severe or persistent diarrhea, especially with blood or mucus
- Severe abdominal pain
- Severe skin rash or blistering
- Hearing changes or hearing loss
Seek urgent medical care for fainting, serious heart-rhythm symptoms, severe allergic reactions, or severe persistent diarrhea.
Severe Allergic Reactions of Azithromycin?
A severe allergic reaction can occur rarely and may develop suddenly after taking azithromycin.
- Swelling of the face, lips, tongue, or throat
- Difficulty breathing
- Wheezing
- Tightness in the throat or chest
- Difficulty swallowing
- Severe dizziness or fainting
- Rapidly developing widespread rash
- Blistering or peeling skin
Severe allergic reactions require emergency medical attention. Do not take another dose unless a healthcare professional advises you to do so.
What side effects may I notice from receiving this medication?
When azithromycin is given in a medical setting, possible effects can include:
- Nausea
- Diarrhea
- Abdominal discomfort
- Headache
- Dizziness
- Injection-site discomfort with injectable treatment
Tell the healthcare professional immediately about breathing difficulty, severe rash, fainting, or other sudden serious symptoms.
Azithromycin Dosage Guidelines
Overview
There is no single azithromycin dose for every infection. The prescribed amount and duration depend on the type and severity of infection and the patient’s characteristics.
Do not change the dose or treatment duration without medical advice.
- Type and location of the infection
- Age and body weight
- Kidney function
- Liver function
- Other medicines being taken
- Formulation being used
- Previous antibiotic reactions
Children: pediatric doses are generally calculated according to the child’s weight and the specific infection. Never estimate a child’s dose using an adult tablet.
Dosage Adjustments for Kidney, Liver, or Other Health Problems
Kidney and liver problems can affect how medicines are selected or monitored. The prescriber should know about existing medical conditions before treatment.
- Normal kidney function: use the prescribed regimen for the diagnosed infection.
- Reduced kidney function: the prescriber may review the dose and overall treatment.
- Severe kidney impairment: treatment should be individually assessed.
- Dialysis: tell the prescriber; dosing decisions depend on the clinical situation.
- Liver disease: extra caution is important because azithromycin can rarely cause liver injury.
- Other important conditions: heart-rhythm problems and medicines that prolong the QT interval may require special consideration.
Never adjust azithromycin yourself because another person received a different dose.
How Often and How Long to Take Azithromycin?
Oral azithromycin is commonly taken once daily, but the duration varies according to the infection.
- Take it at approximately the same time each day.
- Follow the exact prescribed duration.
- Do not take extra doses to make up for missed doses.
- Do not stop early simply because symptoms improve.
- Contact the prescriber if symptoms worsen or do not improve.
How should I take Azithromycin?
Taking Azithromycin With or Without Food
Food instructions depend on the specific formulation and product. Follow the instructions on your prescription or product leaflet.
Some tablet or capsule products are directed to be taken at least one hour before food or two hours after eating, while liquid formulations may be taken with or without food.
How to Take Specific Forms (Tablets, Chewables, Liquid Suspension)
Tablets and capsules
Swallow whole with water unless your product instructions say otherwise. Do not alter the dosage form without checking with a pharmacist.
Chewable tablets
Use only if specifically supplied as a chewable formulation and follow its product instructions.
Liquid suspension
Shake the bottle well before each dose and measure it with an oral syringe, dosing spoon, or measuring device rather than a household teaspoon.
Overdose/Missed Dose
What should I do if I accidentally use too much Azithromycin?
Taking extra azithromycin may increase side effects such as nausea, vomiting, or diarrhea. Contact a doctor or pharmacist for advice, particularly after taking more than the prescribed amount.
What should I do if I miss a dose of Azithromycin?
Take the missed dose when remembered unless it is nearly time for the next dose. Skip it if necessary and continue the normal schedule. Do not take two doses together.
Interactions
Does Azithromycin interact with foods or drinks?
There are no major general food restrictions with azithromycin, but certain formulations have specific food instructions. Antacids containing aluminum or magnesium may need to be separated from azithromycin according to product directions.
Does Azithromycin interact with other medicines (drug interactions)
Tell your healthcare professional about all medicines you take, especially medicines that can affect heart rhythm.
- Warfarin and some other blood thinners
- Digoxin
- Colchicine
- Cyclosporine or tacrolimus
- Rifabutin
- Hydroxychloroquine or chloroquine
- Some statins and medicines affecting heart rhythm
Azithromycin and Blood Thinners
Azithromycin can interact with some medicines used to prevent blood clots, so monitoring may sometimes be required.
- Tell the prescriber if you take warfarin.
- Also report medicines such as dabigatran or edoxaban.
- Do not stop a blood thinner on your own.
- Seek advice if unusual bleeding or bruising occurs.
Azithromycin and Birth Control (if applicable)
Azithromycin itself does not normally reduce the effectiveness of hormonal contraception. However, vomiting or severe diarrhea can interfere with oral contraceptive protection.
Interactions with Supplements, Vitamins, and Herbal Products
Reliable interaction information is limited for many supplements and herbal products.
- Tell your pharmacist about herbal medicines.
- Report mineral or vitamin supplements you use regularly.
- Do not assume “natural” products are interaction-free.
- Discuss combination products with multiple ingredients before use.
Warnings & Precautions
Who should not use Azithromycin?
Azithromycin may not be appropriate for everyone.
- People with a previous serious allergic reaction to azithromycin or related macrolide antibiotics.
- People with certain serious liver problems related to previous azithromycin treatment.
- People with particular heart-rhythm abnormalities.
- People taking medicines that create significant interaction risks.
- Anyone whose infection is not appropriate for antibacterial treatment.
What should I know about Azithromycin before using it?
Tell the prescriber about your medical history and all medicines before starting treatment.
- Previous antibiotic allergies
- Liver disease
- Heart-rhythm problems
- Low potassium or magnesium
- Previous severe antibiotic-associated diarrhea
- Current prescription and non-prescription medicines
Precautions for Pre-existing Conditions (Heart, Kidney, Liver)
Kidney disease: Tell your doctor about reduced kidney function so the complete treatment plan can be reviewed.
Liver disease: Use requires caution because rare serious liver injury has been reported. Seek medical advice for jaundice or dark urine.
Heart disease: Azithromycin can affect cardiac electrical activity. Extra caution may be needed with certain rhythm disorders or QT-prolonging medicines.
Safety Guidelines During Pregnancy and Breastfeeding
Azithromycin can be used during pregnancy when treatment is needed, but the choice of antibiotic depends on the infection and individual circumstances.
- Tell your healthcare professional if you are pregnant or planning pregnancy.
- Use only when prescribed for an appropriate infection.
- Discuss other medicines taken during pregnancy.
- Monitor for unusual maternal or fetal concerns as advised.
Small amounts pass into breast milk and serious effects in healthy breastfed infants are uncommon. Monitor the infant for diarrhea, vomiting, rash, unusual sleepiness, or feeding problems.
Safe Usage & Best Practices
Why You Must Complete the Full Prescription
Take azithromycin for the duration prescribed. Stopping or skipping treatment without medical advice can leave an infection incompletely treated.
- Take every dose as prescribed.
- Do not save leftover antibiotics for later.
- Do not share your medicine.
- Contact your prescriber if serious side effects occur.
Consequences of Skipping Doses or Sharing Medication
Incorrect antibiotic use can reduce treatment effectiveness and contribute to antibiotic resistance.
- The infection may not be adequately treated.
- Symptoms may return.
- Unnecessary side effects may occur.
- The medicine may be unsuitable for another person’s infection.
- Incorrect dosing can be harmful.
Can Azithromycin cause diarrhea?
Yes. Diarrhea is one of the common side effects of azithromycin.
- Nausea
- Vomiting
- Abdominal pain
- Headache
- Changes in taste
Severe, persistent, bloody, or watery diarrhea should be medically assessed because antibiotic-associated intestinal infection can occur.
What should you do if you feel better before finishing the medication?
Feeling better does not necessarily mean the prescribed treatment should be stopped.
- Continue according to the prescription.
- Do not double doses after a missed dose.
- Ask your prescriber before stopping early.
- Seek help for serious side effects.
Azithromycin and Alcohol
Lifestyle Restrictions: Can You Drink Alcohol While Taking Azithromycin?
There is no major direct alcohol interaction established for azithromycin, but alcohol may worsen dizziness, nausea, or other symptoms.
- Avoid alcohol if azithromycin makes you dizzy.
- Alcohol can make feeling unwell more noticeable.
- Do not drink if your healthcare professional has advised against it.
- Do not use alcohol as a substitute for prescribed treatment precautions.
Pregnancy and Breastfeeding
Specific Warnings for Pediatric and Geriatric Patients
Pregnancy: Azithromycin may be used when a bacterial infection requires treatment, with the choice depending on the infection and clinical circumstances.
Breastfeeding: Small amounts enter breast milk and it is generally considered compatible when appropriately prescribed for a healthy infant.
- Children: dosing is based on age, weight, infection, and formulation.
- Do not estimate children’s doses from adult tablets.
- Older adults: review other medicines and heart-rhythm risks.
- Monitor breastfed infants for diarrhea, vomiting, rash, or feeding problems.
Storage Details
Store azithromycin according to the instructions supplied with the specific product.
- Keep tablets and capsules in their original packaging.
- Store away from excessive heat and moisture.
- Keep out of reach of children.
- Do not use medicine after its expiry date.
- Follow the label for liquid-suspension storage.
- Discard prepared suspension according to the product instructions.
Common Brand Names for Azithromycin Available in India, USA, UK, Canada
- India: Azithral, Azee, Aziwok, Azimax
- USA: Zithromax, Zmax
- UK: Zithromax
- Canada: Alta-Azithromycin, Sandoz Azithromycin, Teva-Azithromycin, IPG-Azithromycin
Frequently asked questions
- Q1. Is Azithromycin an antibiotic?Ans: Yes. Azithromycin is a macrolide antibiotic used for certain bacterial infections.
- Q2. Can Azithromycin treat a cold or flu?Ans: No. Colds and influenza are usually caused by viruses, which azithromycin does not treat.
- Q3. How often is Azithromycin taken?Ans: Oral azithromycin is commonly taken once daily, but the exact schedule depends on the infection and prescription.
- Q4. Can Azithromycin cause diarrhea?Ans: Yes. Diarrhea is a common side effect, but severe or persistent diarrhea requires medical assessment.
- Q5. Can Azithromycin be taken during pregnancy?Ans: It may be used when a bacterial infection requires treatment. The prescribing clinician should decide whether it is appropriate.
Storage Details
Temperature
15-25°C
Light Exposure
Keep in dark place
Humidity
Keep dry
