We've updated our vitamin and mineral premixes — now using choline chloride instead of choline bitartrate, based on emerging research for urinary health. Learn more →
Prescribe fresh Rx diets in minutes
Register to access formulas, view veterinary guides, request patient samples, and more.
2026 Formulation Update: Our therapeutic diets now reflect the latest evidence‑based veterinary nutrition guidelines, with new multi‑condition formulas designed for pets with complex needs.
Browse FormulasWhy Nine & Line?
Condition-Specific
Therapeutic Formulas
Renal support, low-fat GI, allergy,
multi-condition diets, and more
Complete & Balanced
Wellness Formulas
Formulated to meet AAFCO nutrient
profiles for long-term feeding
Developed by Board-Certified
Veterinary Nutritionists
Nutrient targets designed to
support clinical goals
How It Works
Create Your Vet Portal Account
Access to prescribing tools, resources, and patient samples.
A. Prescribe In-Clinic
Use a QR code for streamlined checkout and approval.
B. Prescribe Remotely
Select Rx diets and send a secure link to the pet owner in seconds.
We Handle Fulfillment and Support
Each order is made fresh, freeze-packed, and supported by our customer care team.
Diet Explorer
Explore our wellness and therapeutic (Rx) diets tailored to specific conditions and needs. Filter by pet type and conditions.
Filter by Conditions
Register to access all diets and conditions
Select a condition to filter diets, or view all available diets.
FAQs
Find answers to common questions about Nine & Line therapeutic diets, the Vet Portal, and our services.
Have questions?
Our team is here to help you get set up and make the most of the Nine & Line Vet Portal. Email us anytime—or book a quick walkthrough.