
Kidney Care at the Cellular Level
In 2025, kidney care for cats is evolving—
toward deeper, cellular-level support.
Why Cellular-Level Kidney Care Matters
Kidney changes begin before numbers shift.
Daily condition and kidney values
reflect changes building
at the cellular level over time.
Care now looks beyond visible signs.
Kidney care is no longer only about
responding after changes appear.
It is expanding toward
the cellular environment behind stability.
Designed for long-term steadiness
Cellular-level care focuses on
supporting daily balance—
not short-term responses.
If kidney care is already part of your routine,
Intensive extends that care to the cellular level.
Design Principles of Intensive
Built for cellular balance, not stimulation
Intensive is not designed for quick changes.
It focuses on creating a cellular environment that can be supported consistently.
Three considerations guide the design
- Energy balance
- Antioxidant environment
- Long-term consistency
These principles guide how Intensive
fits into a daily kidney care routine.
When Intensive May Be Considered
- For cats 7 years and older
who appear stable but may be entering cellular aging - When there are no obvious issues,
but daily energy or appetite feels slightly different - When kidney care is already in place,
and you want to build a routine that lasts longer
A Timing Gap We Often See
Kidney care is often adjusted
after noticeable changes appear.
However, consultation experience suggests
that expanding care earlier—
when subtle changes begin—
may help maintain steadier daily patterns.
Key Areas of Cellular Support
• Energy balance
Supporting cellular energy pathways
to help maintain daily vitality
• Antioxidant environment
Considering oxidative stress
around kidney cells
• Long-term consistency
Designed for daily use
as part of a sustained care routine
Developed from patterns observed across 3,500+ kidney care consultations.
How to Use Intensive
Once daily, with food
Give 1 capsule per day, with a meal or treat.
Intensive is designed for daily use
as part of a long-term kidney care routine.
There is no loading phase, cycling, or complex timing.
Just one capsule per day, as part of your routine.
Key Ingredients Supporting Cellular-Level Care
Resveratrol
- Selected with consideration for
cellular energy balance
and AMPK-related pathways
Quercetin
- Included to support
the antioxidant environment
around kidney cells
B-Complex Vitamins
- Formulated to support
cellular energy metabolism
as part of daily nutritional balance
These ingredients were selected
not to stimulate change,
but to help cells maintain balance over time.
Full Ingredient List
Resveratrol, Quercetin, B-Complex Vitamins (B1, B2, B3, B5, B6, B7, B9, B12), Vitamin C, Vitamin D3, Vitamin K2, TMG, Fucoidan, Beta-Glucan, Astragalus Extract, Carnitine, Mineral Complex (Magnesium, Zinc, Selenium)
This formulation is designed to support cellular-level care as part of a daily routine.
Cellular-Level Care and the AMPK Perspective
AMPK is discussed in cellular health research
in relation to energy balance.
Intensive reflects this perspective
through its focus on energy balance,
antioxidant environment, and long-term consistency.
Designed to Complement Daily Kidney Care
Intensive is designed to be used
alongside existing kidney care routines.
It does not replace food, supplements,
or other daily practices.
Instead, it extends kidney care
to the cellular level,
supporting long-term stability as part of a daily routine.
Simple Feeding Guide
Intensive is designed
for long-term daily use,
without unnecessary stimulation.
How to feed
- 1 capsule per day, after a meal
- Some ingredients may have a strong taste, so giving the capsule whole is recommended
Helpful Tips
- Use a pill gun to give the capsule whole
- Lightly coat the capsule with a liquid treat if needed
- Offer a small reward treat after administration
About Greycoat Research
Greycoat Research focuses on long-term kidney care for cats.
Our formulas are informed by:
- 3,500+ one-on-one kidney nutrition consultations
- Feeding data from 10,000+ cats in kidney care
Each formula is developed using carefully selected ingredients
and reviewed through a structured, multidisciplinary process.
Expert Review & Advisory
Greycoat Research formulas are reviewed with input from:
Veterinarians, pharmacists, and veterinary nutrition specialists.
Jaeyoung Kim, DVM, PhD
- Taeneung Cat Specialty Animal Hospital
Motoo Kobayashi, DVM, PhD
- Seijo Kobayashi Animal Hospital
Alex Shin, Pharm.D
FAQ
Q. Can Intensive be used with other kidney care products?
Yes.
Intensive is designed to be used alongside
Greycoat Research kidney care products.
When combining with products
outside the Greycoat line,
checking ingredient overlap is recommended.
Q. How is Intensive different from Dr. Toru?
Dr. Toru is the core of daily kidney care, based on AIM research.
Intensive builds on existing care with cellular-level kidney support.
They are complementary, not interchangeable.
Q. When is the best time to start Intensive?
Often before noticeable changes appear,
when daily condition still feels stable.
Many guardians begin from around 7 years of age.
When kidney care is already in place,
and you want to build a routine that lasts longer.
Q. Is Intensive safe for daily use?
Yes.
Intensive is designed for
daily, long-term use,
with gentle, consistent support.
Looking for a More Complete Routine?
For guardians seeking a more structured kidney care routine,
our Full Kidney Support Set brings together complementary support.
60-Day Satisfaction Guarantee
If you’re not satisfied after 60 days of use, we’ll offer a full refund.
Each formula is developed with a science-led nutritional approach.
Still, feline kidney care is a journey — and we’re here with you every step of the way.
Fast, Reliable Global Shipping
Product Details
Why Intensive
Stability is not built in a moment.
It is built quietly, at the cellular level, over time.
- Cellular-level kidney care
- Designed for energy balance, antioxidant support, and long-term consistency
- Built to work alongside existing kidney care routines
- Simple daily use — just 1 capsule per day
Our mission is to advance feline kidney health.
— Greycoat Research
Intensive Protocol

FAQ
Can I give Intensive together with Dr. Toru Protocol?
Yes. Intensive Protocol is formulated for cats showing early signs of imbalance or reduced vitality. It supports kidney cell health through AMPK-related nutrients and antioxidantYes. They serve different roles.
Dr. Toru offers foundational kidney support,
while Intensive complements the increased needs that begin around age 7.
Can cats under 7 use Intensive?
Yes.
However, Intensive is designed for the rising energy and antioxidant needs typically seen after age 7.
Many guardians begin considering it from around age 5.
Can I open the capsule and mix it with food?
Not recommended.
Some ingredients have a strong taste,
so feeding the capsule whole works best.
Is long-term use safe?
Yes.
No break period is required.
Intensive is designed for ongoing nutritional balance, especially for senior kidney-care cats.