Azithromycin: Uses, Dosage, Side Effects, and Indications

Azithromycin is a macrolide antibiotic widely prescribed for bacterial infections. It is effective against respiratory infections, skin infections, and sexually transmitted diseases. Its once daily dosing and short course make it a popular choice for treating infections.

What is Azithromycin

Azithromycin works by inhibiting bacterial protein synthesis, preventing the bacteria from growing and replicating. It is commonly used for treating infections caused by a wide range of bacteria that are sensitive to it.

Common Indications for Azithromycin

Azithromycin is prescribed for the following. Respiratory Infections, such as pneumonia, bronchitis, and sinusitis. Skin and Soft Tissue Infections, including cellulitis and impetigo. Ear Infections, in both adults and children. Sexually Transmitted Infections, such as chlamydia and gonorrhoea. Throat Infections, including strep throat and tonsillitis. Typhoid.

Typical dosing includes the following. 

For Adults, 500 mg on day one, followed by 250 mg for the next four days, for respiratory infections. For Children, 10 mg per kg on day one, followed by 5 mg per kg for the next four days.

Actual dosage always depends on the condition being treated, the patient’s age and weight, and other factors decided by the treating doctor. It should never be adjusted on your own.

Routes of Administration. Oral Tablets and Suspension, azithromycin is available as tablets, capsules, and oral suspension. Intravenous, in cases of severe infections requiring hospitalization.

Adverse Reactions and Side Effects

While azithromycin is generally well tolerated, side effects can include the following. Gastrointestinal Upset, nausea, diarrhoea, and abdominal pain are common. Allergic Reactions, rash, itching, and anaphylaxis in rare cases. Heart Rhythm Issues, azithromycin can cause QT prolongation, leading to heart rhythm abnormalities.

If you notice a fast or irregular heartbeat, dizziness, or fainting while taking azithromycin, contact a doctor promptly, as these can be signs of a heart rhythm problem.

Contraindications

Azithromycin should not be used in the following situations. Liver Disease, patients with liver dysfunction may experience elevated liver enzymes. Allergy to Macrolides, those with hypersensitivity to macrolides should avoid using azithromycin. Severe Heart Conditions, patients with a history of arrhythmias should be cautious.

Drug Interactions

Azithromycin can interact with certain other medicines, so it is important to tell your doctor about everything you are taking, including over the counter drugs and supplements. Some interactions to be aware of are as follows.

Antacids. Aluminium and magnesium containing antacids, commonly used for acidity, can reduce how much azithromycin the body absorbs. Doctors usually advise spacing these out from azithromycin by a couple of hours.

Blood Thinners such as Warfarin. Azithromycin may increase the effect of warfarin, raising bleeding risk. Patients on blood thinners may need closer monitoring while taking azithromycin.

Other QT Prolonging Medicines. Taking azithromycin alongside other medicines that also affect heart rhythm, such as certain antiarrhythmic or antipsychotic drugs, can add to the risk of QT prolongation described above.

This is not a complete list of interactions. Always share your full medicine list, including supplements, with your doctor or pharmacist before starting azithromycin.

Effects on Pregnancy, Liver, and Kidney

Pregnancy. Azithromycin is considered relatively safe during pregnancy, Category B, but should be used only when necessary.

Liver. It can cause liver enzyme elevations, caution is needed for those with preexisting liver issues.

Kidney. No significant dosage adjustments are usually needed in patients with kidney impairment, but monitoring is essential.

Popular Brand Names, Strengths, and Approximate Price

In India, Azithral and Zithrocin.

Azithromycin is commonly available in 250 mg and 500 mg tablet strengths, along with oral suspension for children.

Approximate price in India, ₹40 to ₹140 per strip, 3 to 5 tablets, 500 mg, depending on brand. Prices may vary depending on brand, strength, pack size, pharmacy, and location.

How HealthPil Can Help

If you have been prescribed azithromycin or suspect you have a bacterial infection, HealthPil offers easy access to specialists who can guide your treatment. You can book a consultation to discuss your symptoms and receive the proper care.

Medicines like azithromycin should be started, adjusted, or stopped only under the guidance of a qualified doctor. If you have questions about this medicine, its side effects, or your treatment plan, HealthPil can help you consult a doctor.