Indoor cats / Daily nutrition
For the cat
who rules the windowsill.
Indoor life keeps cats safe, and often less active. Whisker9 is a daily supplement for adult cats who live indoors: one sachet in their wet food, with every ingredient and amount disclosed.
In manufacturing. Orders aren’t open yet.

The short answer
Do indoor cats need vitamins?
An indoor cat on a complete and balanced diet gets its essential vitamins from food. What changes indoors is mostly routine: less activity, more time near the food bowl and more time grooming. A daily supplement can add selected nutrients on top of that diet; it does not replace it.
- Format
- 30 × 2.5 g sachets
- Actives
- 17, every amount disclosed
- Serving
- 1 sachet a day in wet food
- Made for
- Adult cats
Indoor life
What changes indoors.
Indoor cats live in a smaller world than their outdoor cousins. That changes how they spend their day, and it’s worth thinking about when you plan their food.
- Less movement
- Fewer chances to climb, stalk and roam means fewer calories burned. Portion control and play matter more than any supplement.
- More grooming
- Long, quiet days often mean more time grooming. Skin and coat nutrition, such as omega-3s, is part of the picture.
- Hydration
- Indoor cats on dry food can drink little. Wet food adds water to the diet, and Whisker9 is designed for wet-food meals.
Beyond the bowl
Nutrition is one part.
Veterinary guidelines on feline environmental needs stress play, places to climb and hide, and predictable routines for indoor cats. A supplement can’t replace any of that.
What Whisker9 can do is make one part of the routine simple: a measured serving of nutrients, added to a meal they already eat.
In every sachet
Chosen with indoor routines in mind.
A few of the actives in each sachet, and why they are in the formula:




AI-generated ingredient illustrations. Not actual supplied materials or a dose/scale reference. Daily amounts for a 10 lb / 4.5 kg adult cat.
See all 17 activesWhat vitamins do indoor cats need?
The same essential nutrients as any adult cat, which a complete and balanced food is formulated to provide. Indoor cats can benefit most from careful portions, wet food for hydration and daily play.
Will a supplement help my indoor cat lose weight?
No supplement is a weight-loss plan. Weight management comes down to portions, food choice and activity. Your veterinarian can help set a target weight and a feeding plan.
Is Whisker9 suitable for indoor cats?
Yes. Whisker9 is for adult cats, indoor or outdoor. For adult cats of all ages. Not for kittens or pregnant or lactating cats.


