Zithromax (Azithromycin)

Name: Zithromax
Brand: Generic
SKU: 2510
Availability: InStock

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

There is no brand product of Zithromax.

Generic Equivalent of Zithromax

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Azithromycin

Manufacturer: Generic

Country: India

Dosage: 250 mg

Qty-Price (USD):

Type:

Product: Azithromycin (Dispensing Note)

Manufacturer: Generic

Country: Canada

Dosage: 250 mg

Qty-Price (USD):

Type:

Product: Azithromycin (EXPIRY 01/26)

Manufacturer: Generic

Country: India

Dosage: 250 mg

Qty-Price (USD):

Type:

Product: Azithromycin

Manufacturer: Generic

Country: India

Dosage: 1000 mg

Qty-Price (USD):

Zithromax Information

medically reviewed by Carol Hou (BSc. Pharm) on July 22, 2025.

A licensed pharmacist (Licensed Community Pharmacies Directory | College of Pharmacists of British Columbia) with over 20 years of experience in medication management, specifically medication safety, she has reviewed the information for accuracy and completeness.

Azithromycin at CanadaPharmacyOnline.com

The brand Zithromax (azithromycin) is not currently available at this pharmacy.

Generic azithromycin is sourced from manufacturers that meet applicable regulatory standards. The specific manufacturer of your dispensed medication may vary.

Important Information about Generic Zithromax:

Generic azithromycin contains the same active ingredient as the brand-name Zithromax and is required to meet the same safety, effectiveness, and quality standards as the brand-name product. This means it is designed to work in the same way as azithromycin, also known as Zithromax. Studies have demonstrated bioequivalence between generic and brand-name azithromycin, meaning they have comparable absorption rates and overall effects. However, individual responses to any medication can vary. If you have any questions about using generic azithromycin, talk to your doctor or pharmacist.

For more information about generic drug approval and bioequivalence, please visit Access to Generic Drugs in Canada | Canada.ca.

Dosage

Generic azithromycin is commonly available in oral tablets of 250 mg and 1000 mg (at this pharmacy). Azithromycin 250 mg may also be dispensed in pharmacy vials.

Your doctor will determine the appropriate dose based on your individual needs and medical history.

Usage

Zithromax (azithromycin) is a prescription medication used to treat a wide range of bacterial infections by stopping the growth of bacteria. It is not effective against viral infections, such as the common cold or flu. Common uses include:
• Bacterial Infections of the Ears: Such as acute otitis media.
• Bacterial Infections of the Lungs and Bronchial Tubes: Including community-acquired pneumonia and acute bacterial exacerbations of chronic bronchitis.
• Genital Ulcer Disease: Caused by Haemophilus ducreyi (chancroid).
• Pelvic Inflammatory Disease (PID)
• Pharyngitis/Tonsillitis: Strep throat, caused by Streptococcus pyogenes.
• Prevention of Disseminated Mycobacterium Avium Complex (MAC) Disease: in patients with advanced HIV infection
• Sexually Transmitted Diseases: Such as cervicitis and urethritis caused by Chlamydia trachomatis or Neisseria gonorrhoeae.
• Skin and Skin Structure Infections: Uncomplicated infections.
• Sinus Infections: Such as acute bacterial sinusitis.

Mechanism of Action
Zithromax (azithromycin) is a macrolide antibacterial agent. Its mechanism of action involves binding to the 50S ribosomal subunit of susceptible bacteria. This binding inhibits bacterial protein synthesis by interfering with the translocation of peptide chains across the membrane. By preventing the bacteria from producing essential proteins, azithromycin effectively stops their growth and replication, leading to the eradication of the infection. Azithromycin is also known for its good penetration into tissues and a long half-life, allowing for once-daily dosing and shorter treatment courses.

Take Zithromax exactly as your doctor prescribes, following the instructions in the product monograph in Canada. Consult your doctor for personalized guidance and safe use.

The information below summarizes some, but not all, potential side effects, risks, and interactions. Before taking Zithromax, it is essential to discuss all possible side effects, risks, and interactions with your doctor or pharmacist.

Side Effects

The information below is a partial list of side effects; individual reactions can vary. Before starting Zithromax, it is crucial to discuss potential side effects and risks with your doctor or pharmacist.

Common Side Effects - The following are some common side effects of Zithromax; other side effects may also occur. Contact your doctor promptly if any side effects are persistent, worsening, or concerning, or if you experience any other concerning symptoms.
• Abdominal pain
• Diarrhea/loose stools
• Dizziness
• Headache
• Loss of appetite
• Nausea
• Stomach upset
• Vomiting

Serious Side Effects - These are rare but potentially severe side effects. Seek immediate medical attention or call emergency services if you experience any of the following:
• Allergic reactions: Severe rash, hives, swelling of the face, lips, tongue, or throat (angioedema), difficulty breathing, fever, swollen glands, flu-like symptoms, muscle aches, severe weakness, unusual bruising, or yellowing of your skin or eyes. Severe skin reactions such as Stevens-Johnson Syndrome (SJS), Toxic Epidermal Necrolysis (TEN), or Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) may occur.
• Clostridioides difficile-associated diarrhea (CDAD): Persistent or severe diarrhea, abdominal pain or cramping, blood or mucus in stool, which can occur during or several weeks after treatment.
• Hearing changes: Decreased hearing or deafness (usually reversible).
• Hepatotoxicity: Severe and sometimes fatal liver injury (hepatitis, cholestatic jaundice), symptoms like yellowing of the skin or eyes (jaundice), dark urine, persistent nausea or vomiting, unusual tiredness, pale stools.
• Infantile Hypertrophic Pyloric Stenosis (IHPS): In neonates (treatment up to 42 days of life), symptoms include vomiting or irritability with feeding.
• Myasthenia gravis exacerbation: Worsening of muscle weakness in individuals with myasthenia gravis.
• Pancreatitis: Severe stomach pain, nausea, vomiting.
• Prolonged QT interval and Torsades de pointes: Irregular or fast heartbeat, severe dizziness, fainting. This risk, which can be fatal, should be considered in patients with pre-existing QT prolongation, a history of Torsades de pointes, proarrhythmic conditions, or concurrent use of other QT-prolonging drugs.
• Visual disturbances: Blurred vision or eye problems.

Contraindications

The following is not an exhaustive list of contraindications. Before starting Zithromax, it is crucial to discuss all your medical conditions, past and present, and all medications you are taking with your doctor or pharmacist.

Zithromax should not be used if:
• You are allergic to azithromycin, erythromycin, any macrolide, or ketolide antibacterial drug.
• You have a history of cholestatic jaundice or hepatic dysfunction associated with prior azithromycin use.

Tell your doctor about all of your medical conditions, past and present, before starting Zithromax. This is crucial because certain conditions affect whether Zithromax is right for you. These conditions may include, but are not limited to:
• Bradycardia (slow heart rate), cardiac arrhythmias, or other heart problems (especially QT prolongation or family history of QT prolongation).
• Electrolyte imbalances (e.g., low potassium or magnesium).
• Kidney disease.
• Liver disease.
• Myasthenia gravis.

Drug Interactions

Before taking Zithromax, it is essential to discuss all potential risks and interactions with your doctor or pharmacist. For complete and up-to-date information, please visit the highlights of prescribing information | Pfizer USA at https://labeling.pfizer.com/showlabeling.aspx?id=511

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, and herbal supplements. It is also essential to inform your doctor about any herbal teas, recreational drugs, or significant dietary changes you are making, as these could potentially interact with Zithromax. Zithromax may interact with other medicines, but is not limited to:
• Antacids (containing aluminum or magnesium, e.g., Maalox, Mylanta): May reduce the absorption of azithromycin. Take azithromycin at least 2 hours before or after these antacids.
• Anticoagulants (blood thinners, e.g., warfarin): Concomitant use may increase the blood-thinning effect of warfarin, increasing the risk of bleeding. Close monitoring of INR (International Normalized Ratio) is advised.
• Cholera vaccine (live oral): Azithromycin is an antibiotic and can reduce the effectiveness of live bacterial vaccines. Administer at least 14 days before or after the vaccine.
• Colchicine: Increased risk of colchicine toxicity.
• Cyclosporine: Azithromycin may increase cyclosporine levels, increasing the risk of kidney toxicity.
• Digoxin: Azithromycin may increase digoxin levels, increasing the risk of digoxin toxicity. Monitor digoxin levels.
• Drugs that prolong the QT interval (e.g., certain antiarrhythmics like amiodarone, quinidine, sotalol; certain antipsychotics like thioridazine; certain antidepressants like citalopram; other macrolide antibiotics like erythromycin; some fluoroquinolone antibiotics like moxifloxacin): Concomitant use with azithromycin increases the risk of serious cardiac arrhythmias (Torsades de pointes). Avoid co-administration whenever possible, or monitor patients closely with an ECG if necessary.
• Ergotamine or dihydroergotamine (for migraine): Concomitant use may lead to acute ergot poisoning, characterized by severe peripheral vasospasm and dysesthesia. Avoid concomitant use.
• Nelfinavir: May increase azithromycin serum concentrations. Monitor for known azithromycin side effects (e.g., liver enzyme abnormalities, hearing impairment).
• P-glycoprotein substrates (e.g., dabigatran): Azithromycin may increase the serum levels of P-glycoprotein substrates.
• Rifabutin: Concomitant use may result in increased azithromycin or rifabutin levels. Neutropenia has been observed.
• Statins (e.g., simvastatin, atorvastatin): There have been rare reports of rhabdomyolysis (muscle breakdown) when azithromycin was co-administered with statins.

Pregnancy and Breastfeeding

Zithromax is generally considered acceptable to take during pregnancy if there is a clear medical need. However, other antibiotics may be preferred depending on the type of infection. It should only be taken if the benefits outweigh the possible risks. If you are pregnant or planning to become pregnant, discuss this with your doctor.

Azithromycin is excreted into breast milk in small amounts. While generally considered compatible with breastfeeding, monitor the infant for potential side effects such as diarrhea, vomiting, or oral thrush (a fungal infection in the mouth). Some unconfirmed epidemiological evidence has suggested a possible increased risk of infantile hypertrophic pyloric stenosis (IHPS) with maternal macrolide use, particularly in the first two weeks postpartum; however, this risk appears to be low and is still debated. Consult your doctor for personalized advice.

Use in the Elderly

Elderly patients taking Zithromax may be more susceptible to the side effects of QT prolongation. They should be monitored closely, especially if they have pre-existing cardiac conditions or are taking other medications that affect heart rhythm.

Use in Children

Zithromax is approved for use in children for various infections. For example, it is indicated for acute otitis media and community-acquired pneumonia in children aged 6 months and older, as well as for pharyngitis/tonsillitis in children aged 2 years and older. The safety and effectiveness for these specific indications in children below those age limits have not been established. Dosage in pediatric patients is based on body weight. Children are also susceptible to the same potential serious side effects as adults, including QT prolongation and IHPS in neonates.

Frequently Asked Questions about Zithromax at Canada Pharmacy Online:

Why is Zithromax more affordable in Canada than in the United States?

Prescription drug prices, including Zithromax, are generally lower in Canada than in the US due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower costs compared to the US, where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy is dedicated to providing you with the lowest prices on high-quality products.

How do I place an order with your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784; for more information or to learn about the ordering process, visit our How to Order page.

Is there a limit on the number of tablets I can order at one time?

CanadaPharmacyOnline.com can only dispense a maximum of a three-month supply of Zithromax at a time, as per your doctor's prescription.

Can I buy over the counter from you?

No, Zithromax requires a valid prescription from your doctor. We do not sell this product without a valid prescription.

Do you ship to the United States?

Yes, we do. It usually takes 7 to 18 business days to receive your order from our pharmacy.

What is the best time to take Zithromax?

Zithromax oral tablets and oral suspension can generally be taken with or without food. However, if you are taking Zithromax capsules (which are less common now), they should be taken at least 1 hour before or 2 hours after a meal. To ensure consistent absorption and minimize stomach upset, it's often recommended to take azithromycin at the same time each day. Your doctor will provide specific instructions.

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The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

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