If your cat is getting older and has recently started drinking more water, urinating more, losing weight, eating less, or showing a duller coat, it could be a sign of chronic kidney disease (CKD).
Many cat owners think kidney disease is a death sentence—but while it can’t be cured, it can be managed over the long term.
The key is early detection and timely intervention—and medication plays a big role in that.
What Is Rapros?
Rapros (ラプロス®) is a veterinary prescription drug from Japan, specifically developed to help manage chronic kidney disease (CKD) in cats. It is especially effective for cats in IRIS Stage 2 to 3.
Developed by Toray, a leading Japanese pharmaceutical company, Rapros is widely used in animal hospitals in Japan, Hong Kong, Taiwan, and other regions.
? How Does Rapros Help?
The active ingredient in Rapros is Beraprost Sodium, a prostacyclin analog. Here's what it does for cats with kidney issues:
Improves kidney blood flow, delivering more oxygen and nutrients
Reduces chronic inflammation in the kidneys
Slows down fibrosis, the hardening of kidney tissue over time
? In short: Rapros helps reduce the burden on the kidneys and slows disease progression.
? Which Cats Can Benefit from Rapros?
Your cat may be a good candidate for Rapros if they:
Are older, especially over 7 years of age
Have symptoms like increased thirst, frequent urination, loss of appetite, and weight loss
Show abnormal kidney values (e.g. elevated SDMA, CREA, BUN) on blood tests
Have been diagnosed with CKD (Chronic Kidney Disease) and are in IRIS Stage 2–3
? Key Benefits of Rapros
Easy to give: Fixed dosage, 1 tablet twice a day, no weight-based calculation
Cat-friendly: Small tablet size, can be given directly or mixed with food
Safe for long-term use: Low incidence of side effects in clinical use
Clinically proven: Backed by studies and widely used in Japanese animal hospitals
✅ How to Administer Rapros
Dosage: 1 tablet after breakfast + 1 tablet after dinner (twice daily)
Can be given directly by hand or crushed and mixed with a small portion of food
Make sure your cat eats the full dose – no leftovers!
⚠️ Important Notes
Prescription only: Always use Rapros under the guidance of a licensed veterinarian
If your cat shows signs of vomiting or diarrhea, stop the medication and contact your vet
Store in a dry, cool place away from sunlight and out of reach of children or pets
For cats only – do not give to dogs or other animals
? Summary
Chronic kidney disease in cats can't be cured, but it can be managed.
Rapros is one of the few veterinary drugs specifically designed to support cats with CKD. Its gentle, targeted action helps protect kidney function and supports a better quality of life.
If your cat has already been diagnosed with CKD, or shows early signs, talk to your vet to see if Rapros is a good option for long-term kidney support.
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Toray Rapros Japan
ラプロス 猫用 (Japanese product name)