Phenobarbital Tabs

Prescription Required

Eligible for free e-certification with purchase

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In Stock. Usually Ships 3-6 business days.



In Stock. Usually Ships 3-6 business days.



In Stock. Usually Ships 3-6 business days.



In Stock. Usually Ships 3-6 business days.

Shipping weight = 1.00 lb.


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:

Signature Is Required Upon Delivery In ALL States
Prescription items are Non-Returnable and Non-Refundable 
Phenobarbital Tabs (Rx)

Manufactured using highly effective ingredients, Phenobarbital tabs are commonly used to treat canine and feline epilepsy. Its unique formula makes it safe to administer for all kinds of cats and dogs. It is also found to be effective to treat idiopathic epilepsy seen in many species of dogs. It can also effectively prevent seizures for a long time.

  • Used to treat canine and feline epilepsy
  • Treats idiopathic epilepsy
  • Prevents seizures

Item Specifications:

For Use:
In Dogs and Cats

16.2 mg
32.4 mg
64.8 mg
97.2 mg

100 Count

Directions for Use:
Please use as directed by your veterinarian.

Phenobarbital is used to control epilepsy and seizures on a long term basis. Periodic blood tests will be needed to monitor the level of drug in the blood and adjust dosage. Phenobarbital is an effective, inexpensive drug for treating seizures in dogs and cats.

Side effects:
If you notice any side effects, this will normally be in the first few weeks of starting PB therapy and also when the PB dosage is increased. These side effects will normally diminish in time. These are sedation, ataxia (loss of coordination), and the 3 P's: polydipsia (excessive thirst), polyuria (excessive urination) and polyphagia (excessive eating). Gaining weight is a common problem for many dogs on PB and this is one side effect that might not diminish. Therefore it is important to use as little as possible 'extra'food in giving medication. After long term usage, another problem is that the dog's system becomes use to the drug and will usually need a greater dosage to maintain control.


Due to this relatively short half-life of phenobarbital in the dog, it is very important to administer the phenobarbital dose at least EVERY 12 hours. This does not mean "twice a day," such as a morning dose and another dose "sometime" in
the afternoon. This DOES mean dosing as close to every 12 hours as possible. Wide fluctuations in dosing or even a single missed dose can initiate a seizure.  You can also dose every 8 hours for better seizure control.
Even when a dog has been taking the same drug for a long time and the blood levels are in equilibrium, the levels will fluctuate over the course of the day. Depending on the rate of absorption of the drug and factors that influence the absorption rate (e.g., taking some drugs after meals slows absorption), there will be peaking (high points) in the blood level and troughs (low points) shortly before or immediately after a dose is taken.
Dose-related adverse effects are more likely to occur at times of peak levels, and a seizure is more likely to occur at times of trough levels.

This product is for animal use only. Keep this product out of the reach of children.

Style Item Number Model Number UPC
16.2mg 497020 016 012-55900
32.4mg 497020 032 012-55905
64.8mg 497020 064 012-55910
97.2mg 497020 097 012-55915
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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