Individualized Care for Every Need

Right:Ratio^™ Formulary

Each formula specifically designed for the holistic support, comfort, and care your pet needs.

Shop the Full Line Find Your Pet's Formula

Made in California since 2016 · Co-formulated with a veterinary expert

Harper, 5Right:Ratio A:1

A Decade of Rigor & Commitment

10 years optimizing our Custom support formulas.

Every Right:Ratio formula undergoes dynamic, rigorous development and third-party laboratory testing - grounded in natural, integrative care and evidence-based science. That same rigor shapes our commitment to pet parents navigating hard situations - helping every pet enjoy a happier, healthier life.

Five Distinct Formulas for Specific Support

Right:Ratio^™ Formulary at a glance

The right molecules, in the right amounts - purpose-built formulas, developed with detailed attention to 10 years of formulary data and pet parent reported outcomes.

A:1 | Mobility & Joint SupportSupports joint health & comfortable movement

Navigating stairs and the jump into the car
Getting up after a long nap
Keeping up the day after a long walk
Large breeds and working dogs

Ax:1 | Calming & Stress SupportSupports calm & stress relief

Thunderstorms, fireworks and other loud noises
Being left alone
Vet visits, grooming and travel
New people, new places, a busy house

C:1 | Cellular SupportSupports overall cellular health & wellness

Normal cellular function
A healthy appetite
The body's own repair processes
Pets under a vet’s care

N:1 | Neurologic SupportSupports neurological health & coordination

Nerve and brain function
Steady movement and coordination
Calm, settled behaviour
Pets under a vet’s care

F:1 | Feline Elixir PlusCats only — supports urinary, digestive, neurologic & emotional wellness

Senior cats and their changing needs
Multi-cat households
New homes and changed routines
When your vet has suggested added support

Find Your Pet's Formula

What's Behind the Name

Most pet wellness brands compete on milligram count alone. Right:Ratio is calibrated with the right combination of molecules and ingredients, in exactly the right amounts, and in the right ratios - for the exact support your pet needs, alongside specific dosing and titration guidance.

Right ingredients. Right amounts. Right ratios. Right dosing guidance.

Newsletter

Stay close to the research.

Veterinary research, care guidance and what's new from Right:Ratio - about once a week.

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Beyond the Formulary

Every pet, individually.

Did your vet refer you? Does your pet have a complex medical history or unique needs? Our Custom program builds a formula specific to your pet - start with the intake form (first-time customers) or the Custom Reorder form.

1. Complete the intake form

Name, weight, breed, age, and other information related to your situation, including any referring vet comments.

2. We design the formula

Your pet's specific circumstance, along with vet input, if available, enable us to create a bespoke formula, grounded in the same rigorous science behind every Right:Ratio product.

3. We stay with you

Right:Ratio becomes a partner in care, providing dosing guidance, adjustments, and check-ins on your pet's progress.

Start a Custom Intake Create a Reorder

Real Pets, Real Results

Trusted by pet parents for 10 years

Mona LisaRight:Ratio Custom

"Mona is doing well... her appetite is great, and she loves our daily walks and perks up with exercise. Overall she is doing great!"

Birdie, 2Right:Ratio Ax:1

"Birdie's Ax:1 is definitely helping her feel more at ease. Our sweet girl is more comfortable during car rides, and we are making great progress with grooming!"

Jasper, 17Right:Ratio F:1

"After about a week he seemed to be eating more, and has become more cuddly and affectionate again — he now curls up next to me every morning, just as he did when he was a kitten. Last week he even played with some toys, which I haven't seen him do in years."

Why Pet Parents Trust Us

A clinical protocol. Not a supplement guess.

Every formula is co-formulated with veterinary experts from the ground up - a clear rationale behind every ingredient and every ratio, not an afterthought.

Recommended by Veterinarians

1,900+ pets referred by their veterinarian - a significant share of our patients arrive through a vet referral or recommendation from a fellow pet parent.

Individualized, Not Generic

Five distinct formulas for specific needs, plus a Custom pathway for complex cases - never a one-size-fits-all approach.

Our Promise

We stand behind every bottle.

Third-Party Tested

Every Formulary batch and every Custom input verified by an independent state certified laboratory. Lab results available as COAs, upon request.

Human Support, Always

Questions after the first dose are normal and expected. Reach a real person at 310-600-7347, 7 days a week.

Never Run Out

Auto-refill and save

Set your own refill timing, based on how long a bottle actually lasts your pet - not a fixed monthly default that doesn't fit.

Auto-RefillSAVE 10% - applied automatically on every order, so you never have to remember to reorder.
Flexible delivery windows - choose 4, 5, 6, 8, 10, or 12 weeks between bottles, whatever matches your pet's actual dose. Pause, skip, or cancel anytime - never run out, and never pay for more than you need.

Find Your Formula

Ready to find the right ratio for your pet?

Five individualized formulas, one standard of care - shop the full Right:Ratio line.

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Right:Ratio™ Formulary