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Zithromax vs. Biaxin

Medical and Pharmacy Editor:

Are Biaxin and Zithromax the Same Thing?

Zithromax Z-PAK (azithromycin) and Biaxin (clarithromycin) are macrolide antibiotics used to treat bacterial infections such as otitis media (middle ear infection), tonsillitis, laryngitis, pneumonia, and others.

What Are Possible Side Effects of Zithromax?

Common side effects of Zithromax include:

What Are Possible Side Effects of Biaxin?

Common side effects of Biaxin include:

  • nausea,
  • vomiting,
  • upset stomach,
  • diarrhea,
  • unusual or unpleasant taste in your mouth,
  • indigestion,
  • abdominal pain,
  • headache,
  • tooth discoloration,
  • itching or rash, or
  • vaginal itching or discharge.

Tell your doctor if you have severe liver symptoms including:

  • low fever,
  • itching,
  • upper stomach pain,
  • loss of appetite,
  • dark urine,
  • clay colored stools, or
  • yellowing the skin or eyes (jaundice).

What is Zithromax?

Zithromax Z-PAK (azithromycin) is a semi-synthetic macrolide antibiotic used for treating:

Zithromax is also effective against several sexually transmitted infectious diseases (STDs) such as nongonococcal urethritis and cervicitis. Zithromax is available in generic form.

What is Biaxin?

Biaxin (clarithromycin) is a macrolide antibiotic prescribed for certain bacterial infections including skin and middle ear infections, tonsillitis, throat infections, laryngitis, pneumonia, and tuberculosis. Biaxin is available in generic form.

What Drugs Interact With Zithromax?

Zithromax may interact with blood thinners, cyclosporine, other antibiotics, theophylline, cholesterol-lowering medicines, heart medications, HIV medicines, sedatives or seizure medicines.

Zithromax may also interact with arsenic trioxide, pimozide, tacrolimus, antidepressants, anti-malaria medications, ergot medicines, blood pressure medications, medicine to prevent or treat nausea and vomiting, medicines to treat psychiatric disorders, migraine headache medicines, narcotics, or tranquilizers.

What Drugs Interact With Biaxin?

Biaxin may interact with blood thinners, cyclosporine, other antibiotics, theophylline, cholesterol-lowering medicines, heart medications, HIV medicines, sedatives or seizure medicines.

Biaxin may also interact with colchicine, itraconazole, omeprazole, ranitidine, bismuth citrate, sildenafil, tadalafil, vardenafil, tolterodine, steroids, or insulin or oral diabetes medications.

How Should Zithromax Be Taken?

A typical oral dose of Zithromax consists of 500 mg for 1 day then 250 mg for 4 days. A typical intravenous dose consists of 500 mg for 2 days followed by 500 mg orally daily for an additional 5-8 days.

How Should Biaxin Be Taken?

Biaxin adult dose is 250mg to 500mg twice daily or 1000mg once daily (extended release) and dosage in children is based on the weight.

Reviewed on 5/14/2018

References:
Zithromax Product Information.
https://www.pfizer.com/products/product-detail/zithromax
Biaxin Product Information.
https://www.xarelto.com

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