Azithromycin Jubilant

What Is Azithromycin Jubilant and What Is It Used For?

Azithromycin Jubilant is a macrolide antibiotic containing azithromycin as its active ingredient, prescribed to treat a wide range of bacterial infections including upper and lower respiratory tract infections, skin and soft tissue infections, otitis media, and certain sexually transmitted infections such as chlamydia.

Azithromycin belongs to the macrolide class of antibiotics, which also includes erythromycin and clarithromycin. It was first developed by researchers at the pharmaceutical company Pliva in the early 1980s and has since become one of the most widely prescribed antibiotics worldwide. The World Health Organization (WHO) includes azithromycin on its Model List of Essential Medicines, recognising its importance in global healthcare.

The mechanism of action of azithromycin involves binding to the 50S ribosomal subunit of susceptible microorganisms. This binding inhibits RNA-dependent protein synthesis by blocking the transpeptidation and translocation steps of bacterial protein production. As a result, the bacteria cannot produce the proteins necessary for growth and reproduction, leading to bacteriostatic effects at normal concentrations and bactericidal effects at higher concentrations against certain pathogens.

One of the distinguishing pharmacological features of azithromycin is its remarkably long terminal elimination half-life of approximately 68 hours. This is because the drug concentrates extensively in tissues and within phagocytic cells (white blood cells), achieving intracellular concentrations that are 10 to 100 times higher than corresponding plasma levels. This unique pharmacokinetic profile means the drug continues to exert antibacterial effects at the site of infection for several days after the last dose, allowing for shorter treatment courses than most other antibiotics.

Azithromycin Jubilant is specifically indicated for the following types of infections caused by susceptible organisms:

• Upper respiratory tract infections: Including acute bacterial sinusitis, pharyngitis/tonsillitis (as an alternative for penicillin-allergic patients), and acute otitis media
• Lower respiratory tract infections: Including acute exacerbations of chronic bronchitis, mild to moderate community-acquired pneumonia, and atypical pneumonia caused by Mycoplasma pneumoniae, Chlamydophila pneumoniae, or Legionella pneumophila
• Skin and soft tissue infections: Including erysipelas, cellulitis, impetigo, and secondary infected dermatoses
• Sexually transmitted infections: Particularly uncomplicated genital infections caused by Chlamydia trachomatis and Neisseria gonorrhoeae (non-multi-resistant strains)

The microbiological spectrum of azithromycin

Azithromycin demonstrates activity against a broad spectrum of pathogens. Among gram-positive aerobes, it is effective against Staphylococcus aureus (methicillin-susceptible strains), Streptococcus pneumoniae (penicillin-susceptible strains), and Streptococcus pyogenes. Its coverage of gram-negative aerobes includes Haemophilus influenzae, Moraxella catarrhalis, and Neisseria gonorrhoeae. Importantly, azithromycin also covers atypical pathogens including Chlamydia trachomatis, Chlamydophila pneumoniae, Mycoplasma pneumoniae, and Legionella pneumophila, making it particularly valuable for treating atypical pneumonia.

However, clinicians and patients should be aware that azithromycin may not be effective against organisms with acquired macrolide resistance. Resistance rates vary significantly by geographic region, and local resistance patterns should guide prescribing decisions. Methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus, and penicillin-resistant Streptococcus pneumoniae strains are generally resistant to azithromycin.

What Should You Know Before Taking Azithromycin Jubilant?

Before taking Azithromycin Jubilant, inform your doctor about any liver disease, heart rhythm problems, myasthenia gravis, or allergies to macrolide antibiotics. Azithromycin should be used with caution in pregnancy and while breastfeeding.

Contraindications

You must not take Azithromycin Jubilant if you are hypersensitive (allergic) to azithromycin, erythromycin, any macrolide or ketolide antibiotic, or to any of the other ingredients in the tablet. Hypersensitivity reactions can range from mild skin rashes to severe anaphylactic reactions. If you have previously experienced an allergic reaction to any macrolide antibiotic, you should not take this medicine.

Azithromycin is also contraindicated in patients with severe hepatic (liver) impairment, as the drug is primarily metabolised in the liver and excreted in bile. Patients with significantly compromised liver function may not be able to process the drug adequately, leading to accumulation and increased risk of adverse effects including hepatotoxicity.

Warnings and Precautions

Several important warnings apply to the use of azithromycin. Your prescribing physician should be informed of the following conditions before you start treatment:

• Cardiac conditions: Azithromycin has been associated with prolongation of the QT interval on electrocardiogram (ECG), which can in rare cases lead to serious cardiac arrhythmias including torsades de pointes. Patients with known QT prolongation, those taking other drugs that prolong the QT interval, those with electrolyte disturbances (particularly low potassium or magnesium), clinically relevant bradycardia, or heart failure are at particular risk
• Hepatic impairment: Cases of fulminant hepatitis potentially leading to life-threatening liver failure have been reported with azithromycin. If signs and symptoms of hepatic dysfunction develop (such as rapid-onset fatigue, jaundice, dark urine, tendency to bleed, or hepatic encephalopathy), liver function tests should be performed immediately, and the drug should be discontinued if significant liver abnormality develops
• Myasthenia gravis: Exacerbation of symptoms of myasthenia gravis and new onset of myasthenic syndrome have been reported in patients receiving azithromycin therapy
• Renal impairment: While no dose adjustment is typically necessary for mild to moderate kidney impairment, caution should be exercised in patients with severe renal impairment (glomerular filtration rate below 10 mL/min), as there is limited data in this population
• Superinfection: As with all antibiotics, azithromycin may lead to overgrowth of non-susceptible organisms, including fungi. If superinfection occurs, appropriate therapy should be instituted
• Clostridium difficile-associated diarrhoea (CDAD): Antibiotic-associated colitis and pseudomembranous colitis have been reported with nearly all antibacterial agents, including azithromycin. This can range from mild diarrhoea to fatal colitis. If significant diarrhoea develops during or after treatment, CDAD should be considered

Pregnancy and Breastfeeding

Animal reproduction studies have not demonstrated direct harmful effects on the foetus; however, there are no adequate, well-controlled studies in pregnant women. Because animal studies do not always predict human response, azithromycin should be used during pregnancy only if the potential benefit justifies the potential risk to the foetus. Your healthcare provider will carefully weigh the necessity of antibiotic treatment against possible risks.

Azithromycin has been reported to be excreted in human breast milk in small quantities. Because of the potential for adverse reactions in nursing infants, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother. In clinical practice, many healthcare providers consider short courses of azithromycin to be compatible with breastfeeding, but this decision should always be made on an individual basis.

There is no evidence that azithromycin affects fertility in males or females at therapeutic doses, based on available animal data. However, if you are planning a pregnancy or suspect you may be pregnant, discuss your medication options with your doctor before starting treatment.

How Does Azithromycin Jubilant Interact with Other Drugs?

Azithromycin can interact with several medications including ergotamine derivatives, warfarin, cyclosporine, digoxin, and antacids. While it has fewer drug interactions than other macrolides like erythromycin, clinically significant interactions can still occur.

Unlike erythromycin and clarithromycin, azithromycin does not significantly inhibit the cytochrome P450 enzyme system (particularly CYP3A4), which means it generally has fewer drug-drug interactions than other macrolide antibiotics. However, several clinically important interactions have been identified and should be carefully considered.

Major Interactions

Minor Interactions

Several additional interactions have been documented that are generally of lesser clinical significance but should still be considered:

• Antacids (aluminium and magnesium-containing): Antacids reduce the peak plasma concentration (Cmax) of azithromycin by approximately 24%, though the total amount absorbed (AUC) is not significantly affected. To avoid this interaction, take azithromycin at least 1 hour before or 2 hours after antacids
• Nelfinavir: Co-administration may lead to increased azithromycin plasma concentrations. While no dose adjustment is routinely recommended, patients should be monitored for known azithromycin adverse effects
• Theophylline: Although pharmacokinetic studies have shown no significant effect of azithromycin on theophylline levels, caution is still advised because other macrolides (particularly erythromycin) significantly increase theophylline concentrations
• Zidovudine: Azithromycin may slightly increase the levels of the active metabolite of zidovudine (a reverse transcriptase inhibitor used in HIV treatment), though the clinical significance is uncertain
• Colchicine: Post-marketing cases of colchicine toxicity have been reported when azithromycin and colchicine are used together. Patients should be monitored for clinical symptoms of colchicine toxicity

Always inform your healthcare provider about all medicines you are currently taking, including prescription drugs, over-the-counter medications, herbal supplements, and vitamins. This comprehensive disclosure enables your doctor to identify potential interactions and adjust your treatment plan accordingly.

What Is the Correct Dosage of Azithromycin Jubilant?

The standard adult dosage of Azithromycin Jubilant is 500 mg on day 1 (two 250 mg tablets), followed by 250 mg once daily on days 2–5, for a total dose of 1,500 mg over 5 days. For chlamydia, a single 1,000 mg dose is standard.

The dosage of azithromycin varies depending on the type and severity of infection being treated, the patient's age and weight, and renal or hepatic function. The following dosing recommendations are based on international guidelines and the European Medicines Agency (EMA) approved summary of product characteristics.

Adults

The tablets should be taken once daily, at the same time each day, on an empty stomach. Take the tablet at least 1 hour before a meal or at least 2 hours after a meal for optimal absorption. Swallow the tablets whole with a glass of water — do not crush, chew, or break the film-coated tablets.

Children

Azithromycin Jubilant 250 mg film-coated tablets may be used in children and adolescents who can swallow tablets. The dose for children is calculated based on body weight. For children weighing 45 kg or more, the same dosage as adults applies.

For children weighing less than 45 kg, oral suspension formulations are generally preferred over tablets to ensure accurate dosing. If tablets are prescribed, the typical paediatric dosing for upper and lower respiratory tract infections, skin infections, and otitis media is:

• Day 1: 10 mg/kg body weight (maximum 500 mg)
• Days 2–5: 5 mg/kg body weight per day (maximum 250 mg/day)
• Total dose: 30 mg/kg over 5 days

An alternative 3-day course of 10 mg/kg per day (maximum 500 mg/day) may be used for certain infections, providing the same total dose of 30 mg/kg. The choice between 3-day and 5-day regimens should be guided by the treating physician based on the specific clinical situation.

Azithromycin is not recommended for children under 6 months of age, as safety and efficacy data in this age group are limited.

Elderly

No dosage adjustment is required for elderly patients with normal renal and hepatic function. The same dosing recommendations as for younger adults apply. However, elderly patients may be more susceptible to QT prolongation and cardiac arrhythmias, so particular vigilance regarding cardiac effects is warranted. Additionally, elderly patients are more likely to be taking multiple medications, increasing the potential for drug interactions.

Missed Dose

If you miss a dose of Azithromycin Jubilant, take it as soon as you remember. However, if it is almost time for your next scheduled dose (within a few hours), skip the missed dose and take the next dose at the regular time. Do not take a double dose to make up for a forgotten dose. Maintaining consistent timing helps ensure effective antibiotic concentrations at the site of infection.

Overdose

Symptoms of azithromycin overdose may include temporary hearing loss, severe nausea, vomiting, and diarrhoea. In clinical trials, overdose symptoms were similar to those seen at normal doses but may be more severe. If overdose is suspected, contact your local poison control centre or seek emergency medical attention immediately. Treatment is symptomatic and supportive, as there is no specific antidote for azithromycin. Gastric lavage may be considered if the overdose occurred recently.

What Are the Side Effects of Azithromycin Jubilant?

The most common side effects of Azithromycin Jubilant include diarrhoea, nausea, abdominal pain, and vomiting. These gastrointestinal effects are generally mild and resolve after treatment. Serious but rare side effects include QT prolongation, severe allergic reactions, and hepatotoxicity.

Like all medicines, Azithromycin Jubilant can cause side effects, although not everyone experiences them. Most side effects are mild to moderate and resolve after completing the treatment course. The following side effects are categorised according to their frequency of occurrence as reported in clinical trials and post-marketing surveillance.

The gastrointestinal side effects of azithromycin are primarily related to its prokinetic effect on the gastrointestinal tract — macrolide antibiotics stimulate motilin receptors in the gut, increasing gastrointestinal motility. This effect is less pronounced with azithromycin than with erythromycin, which is why azithromycin is generally better tolerated from a gastrointestinal perspective.

Regarding hepatic effects, azithromycin has been associated with abnormalities in liver function tests, including elevated alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase, and bilirubin levels. In rare cases, hepatocellular and/or cholestatic hepatitis with or without jaundice has occurred. These effects typically resolve upon discontinuation of the drug, but in very rare cases, fulminant hepatitis leading to liver failure has been reported.

The cardiac effects of azithromycin, specifically QT prolongation, have been the subject of extensive research. A large observational study published in the New England Journal of Medicine (Ray et al., 2012) found a small but statistically significant increase in the risk of cardiovascular death during 5-day courses of azithromycin compared to amoxicillin. However, subsequent analyses and the FDA's review concluded that the absolute risk increase is very small for most patients and that the benefits of azithromycin typically outweigh the risks when prescribed appropriately.

How Should You Store Azithromycin Jubilant?

Store Azithromycin Jubilant at room temperature below 25°C (77°F) in the original packaging to protect from moisture and light. Keep out of reach of children and do not use after the expiry date.

Proper storage of medication is essential to maintain its efficacy and safety throughout its shelf life. Azithromycin Jubilant film-coated tablets should be stored according to the following guidelines:

• Temperature: Store below 25°C (77°F). Do not refrigerate or freeze the tablets. Avoid exposure to excessive heat or direct sunlight, as these conditions can accelerate degradation of the active ingredient
• Moisture protection: Keep the tablets in their original blister packaging until ready to use. The film-coated formulation provides some protection against moisture, but prolonged exposure to humid conditions should be avoided
• Light protection: Store in the original outer carton when not in use to protect from light
• Child safety: Keep this medicine out of the sight and reach of children. Use child-resistant storage where possible
• Expiry date: Do not use this medicine after the expiry date printed on the carton and blister strip (EXP). The expiry date refers to the last day of that month

Do not dispose of unused or expired medicines via household waste or wastewater. Ask your pharmacist about how to dispose of medicines no longer required. These measures help protect the environment and prevent accidental exposure to other people or animals.

If you notice any visual changes to the tablets such as discolouration, crumbling, or unusual odour, do not use them even if they are within the expiry date. Return them to your pharmacy for safe disposal.

What Does Azithromycin Jubilant Contain?

Each Azithromycin Jubilant 250 mg film-coated tablet contains azithromycin dihydrate equivalent to 250 mg azithromycin as the active ingredient, along with inactive excipients including pregelatinised starch, calcium hydrogen phosphate, and a film-coating.

Active ingredient

The active pharmaceutical ingredient is azithromycin dihydrate, equivalent to 250 mg of azithromycin per tablet. Azithromycin is a semi-synthetic macrolide antibiotic derived from erythromycin A. The molecular formula is C₃₈H₇₂N₂O₁₂·2H₂O, with a molecular weight of approximately 785 g/mol.

Inactive ingredients (excipients)

The tablet core typically contains the following inactive ingredients that serve important functions in the manufacturing and delivery of the medication:

• Pregelatinised maize starch — acts as a binder and disintegrant, helping the tablet hold together and break apart appropriately in the digestive tract
• Calcium hydrogen phosphate anhydrous — serves as a diluent/filler to provide adequate tablet size
• Croscarmellose sodium — functions as a superdisintegrant, promoting rapid dissolution of the tablet
• Magnesium stearate — acts as a lubricant during tablet compression to prevent sticking to manufacturing equipment
• Sodium lauryl sulfate — serves as a wetting agent to improve dissolution

The film-coating (Opadry White or equivalent) typically contains hypromellose, titanium dioxide (E171), and macrogol/polyethylene glycol. This coating serves several purposes: it masks the bitter taste of azithromycin, improves ease of swallowing, provides protection against moisture, and helps identify the product visually.

The tablets are white to off-white, capsule-shaped, film-coated, and may bear debossing for identification. They are supplied in aluminium/PVC blister packs, typically containing 3 or 6 tablets per pack.