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Cimetidine Tablets

Prescription Required

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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 Cimetidine?
Cimetidine decreases stomach acid production in dogs and cats. It helps treat existing ulcers as well as prevent the formation of new ulcers. Cimetidine is also used to treat inflammation of the stomach (gastritis), inflammation of the esophagus, and gastric or esophageal reflux.
Who is it for?
Cimetidine dogs and cats. 

What are the benefits?


* Prescription medication for the reduction of stomach acid production


Aids in the treatment of ulcers and the prevention of ulcer formation


Cimetidine is also used in the treatment of gastritis and esophagitis

The active ingredient Cimetidine is used to decrease the amount of stomach acid produced. This aids in the treatment of ulcers that are present and helps prevent ulcer formation. Cimetidine is also used in the treatment of gastritis (inflammation of the stomach) and esophagitis (inflammation of the esophagus) and gastric or esophageal reflux.

How does Cimetidine work?
Cimetidine blocks the action of histamine in the stomach, where histamine triggers acid production.

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

How is it given?
Cimetidine tablets are given by mouth.

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?
Cimetidine works rapidly after being absorbed from the intestinal tract. When used for the treatment of gastric ulcers, however, it must be used long-term since the ulcers may be slow to heal. Once the medication is discontinued, the stomach will start to produce more acid again.

What form(s) does it come in?

Brand Name
Tagamet (human form)


Common Drug Name

What should I discuss with my veterinarian while considering Cimetidine?
Talk to your veterinarian about what tests and exams may be necessary while your pet is taking Cimetidine. Also discuss what other or additional therapies may be available. Have your veterinarian explain how long the treatment period will be and what type of outcome is expected.

Tell your veterinarian if your pet has heart, liver, or kidney disease, may be pregnant or is nursing, or if you intend to breed your pet.

Notify your veterinarian of any other medications or supplements your pet is taking, and 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?
Symptoms may reoccur if a dose is missed or if the medication is discontinued.

Who should not take it?
Not for use in dogs and cats hypersensitive (allergic) to Cimetidine. Use with caution in pets who are older, have blood abnormalities, or those with liver or kidney disease.

What side effects may be seen when taking Cimetidine?
Side effects are rare.

If your pet experiences an allergic reaction to the medication, signs may include facial swelling, hives, scratching, sudden onset of diarrhea, shock, seizures, pale gums, cold limbs, or coma. If you observe any of these signs, contact your veterinarian immediately.

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

What should I do if I know of or suspect there has been an overdose?
May see rapid heart rate and difficulty breathing. If you know or suspect your pet has had an overdose, contact your veterinarian immediately.

What should I avoid when giving my pet Cimetidine?
Cimetidine may affect the levels of many different medications in the blood. Notify your veterinarian of any other medications, including vitamins and supplements, your pet is taking while receiving Cimetidine. Cimetidine may decrease white blood cell counts, especially if given with other bone marrow suppressing drugs such as azathioprine. If used with antacids, ketoconazole, or other medications, give the Cimetidine two hours before or two hours after the other medication(s).

Style Item Number Model Number UPC
200mg 1 Tablet P01840 200 001 012012-200MG-TAB
200mg 100 Tablets P01840 200 100
300mg 1 Tablet P01840 300 001 012012-300MG-TAB
300mg 100 Tablets P01840 300 100
400mg 100 Tablets P01840 400 100 012012-400
Additional Information:

Please Note: 

This prescription product or therapeutic food is fulfilled by Pet’s Choice Pharmacy, Inc. A licensed pharmacy in all states, excluding North Carolina. Pet’s Choice is working with North Carolina Board of Pharmacy to be licensed to fill prescriptions in the future. We can only ship to US 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.

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


How do you fill my pet’s prescription order?

We understand how important your pet’s health is to you. That’s why we partnered with Pet’s Choice Pharmacy, a fully accredited Vet-VIPPS national pharmacy. Located in Belleville, Kansas, Pet’s Choice Pharmacy is a trusted partner that is fully licensed to distribute pharmaceutical products in all states, excluding North Carolina. This licensing ensures that they adhere to the proper standards for handling and dispensing pet medications directly to you, at a significant savings.


How does the prescription process happen?

Pet’s Choice Pharmacy will contact your veterinarian directly to obtain the necessary information and approval to dispense the medications ordered. It is helpful to have veterinarian’s name, phone number, and fax number when you place your order so we can speed up contact process with veterinarian. After prescription is verified, your medication will be safely dispensed and shipped directly to you. If you veterinarian does not participate or support online sales, you can mail your script to us directly.


Pet’s Choice Pharmacy  

814 K Street

Belleville, KS 66935 Order #


Are we a licensed pharmacy?

The National Association of Boards of Pharmacy (NABP) has approved us as an Internet Advertiser of prescription drug-related services through its e-Advertiser Approval 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, a full Vet-VIPPS accredited pharmacy. This gives you a trusted and affordable alternative to purchase the medications your beloved pets need to maintain quality of life and overall health.


If you have any medical questions about your pet, we suggest you speak with your veterinarian before administering any medication.  If you would like to speak with our pharmacy support team about your order, you can contact us directly Monday-Friday 9 am-5 pm EST at (877) 574-2267. If you veterinarian needs to fax your prescription, our fax number is (866) 787-1177.


** By law we can only accept a prescription faxed from your veterinarian or we must have the original prescription**


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