Our products are Sold at veterinary practices and pharmacies.
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Dr. Fossum's Pet Care

Vet-formulated pet supplements

We create CogniCaps, CardioChew and CBD oil to help improve the quality of your pet's life.

Attention Veterinarians: Earn free RACE Approved Continuing Education Credits taught by board certified veterinary specialists.

Topics include CBD, cognitive function, cardiac support, and atopic dermatitis.

Dr. Terry Fossum: As Seen On

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Shop By Concern

Cognitive Function

Help keep your dog bright and alert

Calm

Keep your dog calm and content

Mobility

Put some pep in your dog's step

Cardiac Care

Advanced Heart Support

From everyday wellness support to their senior years - we are here for every stage of your pet's life.

Meet Dr. Terry Fossum

Dr. Fossum dedicated her life and career to animal wellness and healthy pets

Dr. Fossum received her D.V.M. degree in 1982 from Washington State University, completed a surgical residency and Master of Science degree in 1986 from Ohio State University, and received a Ph.D. in Veterinary Immunology from Texas A&M University in 1992. She received Board Certification in Veterinary Surgery in 1987. Learn more about my story.
Surgeries Performed
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Veterinary Textbooks Sold
25000 +
Senior Dogs: The Essential Guide book cover
New from Dr. Fossum

Senior Dogs: The Essential Guide

The veterinary-textbook author's plain-English handbook for life with an aging dog - practical, honest, and written for the kitchen table, not the clinic.

Improve your pet's quality of life in 3 steps!

Let's find the best product for your pet

Free, no email needed

Who is the dose for?

Which oil?

  • No email needed to see the dose.
  • Amounts follow Dr. Fossum's dosing protocol.
  • Works with any brand's bottle.
  • Not a prescription. If your pet takes medication, ask your vet first.

Example result for a 30 lb dog. Enter your pet's weight above to get your own numbers.

Give twice a day, morning and night

Days 1 to 71.09 mLabout 22 drops · 27.2 mg hemp extract (about 12.2 mg CBD)
From day 80.54 mLabout 11 drops · 13.6 mg hemp extract (about 6.1 mg CBD)

using Rejuvenator Medium Dog CBD Oil (25 mg extract per mL, about 11.2 mg CBD)

~55 daysper 60 mL bottle from day 8. Your first bottle lasts about 48 days, because the first week uses more.
$1.45 a dayestimated from day 8, at the current price
12.2 mg CBD a dayfrom day 8, plus about 12.2 mg CBG and 2.7 mg CBN

Matched to your dog's size

Rejuvenator Medium Dog CBD Oil

Rejuvenator Medium Dog CBD Oil

for dogs 21-60 lb, 60 mL, broad spectrum and THC-free

Formulated by Dr. Terry Fossum, DVM, MS, PhD, DACVS

Give it consistently, twice a day, and follow the schedule shown above. Talk to your veterinarian first if your pet takes other medications (CBD uses the same liver pathway as many drugs, so interactions are possible), is pregnant or nursing, or has liver problems. These statements have not been evaluated by the FDA; this is not a substitute for veterinary advice.

Get this plan by email

The week-by-week schedule, refill timing for your bottle and a 20% first-order code.

Printable dose chart (PDF)

Starting CBD? Track the first 30 days with the free response diary. Sixty seconds a day gives you a day-by-day record to share with your vet.

How we calculate: weight in kg × 2 mg of hemp extract per dose for the first 7 days, then × 1 mg, each given twice a day, the schedule on the Rejuvenator box. For another brand, the same amount per kg is applied to the mg on its label. It is a starting point, not a prescription; your veterinarian should have the final word.

Our Top Selling Products

CogniCaps - Cognitive Function Supplement

Cognicaps is a Cognitive Function Supplement, formulated by world renowned veterinary neurologist Dr. Curtis Dewey and Dr. Terry Fossum. It helps enhance your dog’s cognitive function.

$59.99 for 60 Capsules

Rejuvenator Broad Spectrum Hemp Extract CBD Oil for Dogs

Our canine hemp extract comes in 3 sizes so that you can give your dog a specified amount based on his/her weight. To enhance the taste, we have added peanut butter flavoring – sure to become your dog’s favorite!

$49.99 for 750mg

CardioChew – Advanced Heart Support Supplement for Dogs

Support your dog’s heart wellness with Dr. Fossum’s CardioChew, a veterinarian-formulated supplement featuring L-Carnitine, L-Taurine, L-Arginine, Green Lipped Mussel Oil, and Coenzyme Q10.

$59.99 for 60 chews

Senior dog check

Worried about changes in your older dog?

Confusion, restless nights, staring at walls - take the free 2-minute DISHAA check veterinarians use, and bring the result to your vet.

Don't just take our word, see what our customers are saying:

Want free or discounted product?

Refer Friends & Family to receive 25% of their order in store credit

Our "Acts of Kindness" referral program is the biggest cost savings program that Dr. Fossum has ever offered!

Choosing the right product for your dog can be overwhelming. As a believer and existing customer in Dr. Fossum's products, guide your friends to the right choice and make their lives easier!

Its almost too good to be true. But its not…It’s simple!
Get rewarded with 25% of their order in store credit on ALL of their orders!
Your Friends will thank you!
For every friend you refer, you’ll receive 25% of their purchase in store credits, FOREVER. So, if your friend keeps purchasing products, you continue to receive store credits! Earn free products or donate your points to a shelter to help a pet in need!
Good to know

Your pet insurance may cover Dr. Fossum's

Some pet insurance wellness plans reimburse vet-recommended supplements. Two minutes with your policy could change the math.

Coverage varies by plan and state - check your policy or ask your provider.

Your pet has been there for you,
now its your turn to be there for them.

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