Azathioprine Tablets

Prescription Required
From $59.99


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All medications are filled by Pet's Choice Pharmacy. More information. Can only be shipped in the United States.
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Product Summary:

Prescription items are NON-RETURNABLE and NON REFUNDABLE

What is Azathioprine?
Azathioprine is used to treat autoimmune diseases (diseases in which the body starts to attack itself) in multiple species including dogs and cats. It is often used in combination with other drugs to suppress the immune system.

Who is it for?
Azathioprine is for multiple species including dogs and cats.

What are the benefits?


Medication for the treatment of certain immune-mediated diseases


Azathioprine is a prescription drug that lowers immune system function


Tablet form Azathioprine allows convenient treatment

Azathioprine is a prescription immunosuppressive medication used to treat immune-mediated diseases, such as immune-mediated hemolytic anemia, certain types of kidney disease, autoimmune skin diseases, lupus, and rheumatoid arthritis. It is often used in conjunction with other drugs to suppress the immune system.

How does Azathioprine work?
Azathioprine treats certain immune-mediated diseases by means of its active ingredient. Azathioprine suppresses the immune system to treat disease conditions triggered by overreaction (over-activity) of the immune system.

Is there a generic equivalent available?
Azathioprine is a generic medication.

How is it given?
Azathioprine is given by mouth. Azathioprine is a very potent medication; wash hands after handling the medication. Always follow the dosage instructions provided by your veterinarian. If you have difficulty giving the medication, contact your veterinarian. This medication should only be given to the pet for whom it was prescribed.

What results can I expect?
Although Azathioprine is a very potent medication, it may take several weeks to have a noticeable effect.

What should I discuss with my veterinarian while considering Azathioprine?
Talk to your veterinarian about what type of outcome is expected. Have your veterinarian explain the other treatment options that may be available to treat your pet's condition. Understand what physical exams and laboratory testing will be needed while your pet is taking Azathioprine.

Tell your veterinarian if your pet has liver disease, pancreatic disease, cancer, may be pregnant or used for breeding.

Notify your veterinarian of any other medications or supplements your pet is taking. Also, if your pet has had any reactions to previous medications.

What should I do if I miss a dose?
If you miss a dose, give it as soon as you remember. If it is almost time for the next dose, skip the one you missed and go back to the regular schedule. Do not give two doses at once.

What is the most important information I should know?
There is a potential for this medication to have serious toxic effects including bone marrow suppression, bleeding, and increased susceptibility to infections and cancers. Use exactly as directed and follow up with the laboratory testing recommended by your veterinarian. Contact your veterinarian if you notice any side effects.

Who should not take it?
Do not use in breeding or pregnant animals. Use with caution in animals with liver or pancreatic disease. Use with extreme caution in cats, who are more susceptible to toxic effects, especially bone marrow suppression and bleeding. Use milk replacer if the mother is receiving Azathioprine.

What side effects may be seen when taking Azathioprine?

The most common side effect is suppression of the bone marrow. This may lead to anemia, with pale gums, weakness, and lethargy; bruising or bleeding tendencies; and decreased white blood cell counts, which may cause the animal to be more at risk of infections. Other side effects include vomiting, diarrhea, poor hair growth, skin rashes, pancreatitis, and liver injury, perhaps with jaundice (yellowing of the gums, skin, or eyes). Contact your veterinarian if you notice vomiting, lack of appetite, infections, bleeding or bruising.

How is it stored?
Store in a tight, light-resistant, childproof container at room temperature. Keep out of reach of children and pets.


Style Item Number Model Number UPC
50mg 1 Count RX101007 050 001 012RO-50100-50MG-TAB
50mg 100 Count RX101007 050 100 012ROX-50100 360219107618
Additional Information:

Please Note: 

This prescription product or therapeutic food is fulfilled by Pet’s Choice Pharmacy, Inc. A licensed pharmacy in all states.  We are only authorized to ship within the United States.  

To order prescription products or therapeutic foods must have an existing, valid veterinarian-client-patient relationship.  Prescription requests are subject to a Drug Utilization Review by a licensed pharmacist for patient safety. By law we can only accept a prescription faxed from your veterinarian or we must have the original prescription.

All prescription products (excluding therapeutic food) are FDA approved, or EPA licensed, to be sold in the US. Prescription products cannot be returned.  

Are we a licensed pharmacy?

The National Association of Boards of Pharmacy (NABP) has approved us as a Safe Site through its .pharmacy verified website program. We are not a licensed pharmacy; however, we are permitted to display pet medications on our site and have prescription orders fulfilled and delivered through our trusted partner, Pet’s Choice Pharmacy, an NABP .pharmacy verified website. This gives you a trusted and affordable alternative to purchase the medications your beloved pets need to maintain quality of life and overall health.

The .Pharmacy Verified program, prior to approval of domain registration, ensures that applicants meet all applicable Program Standards, which address regulatory standards including; to be licensed, registered, or hold appropriate permits where it is headquartered and where its customers reside, to protect patient medical and financial information and to have a clean disciplinary record.

To find out How to Fill your Pets Prescription click on More Information at the top. 

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Sometimes, manufacturers require that products be advertised only at their suggested prices. When we choose to sell these items for less, we display the sale price only in the cart. To see the price, click Add to Cart.
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