In-Stock Diets

Our in-stock custom diets provide a clean, open formula background in which to make modifications.

DIO Series Diets

Research Diets, Inc. is well known as the gold standard in high-fat diets for diet-induced obesity research worldwide.

Control Diets

When choosing a control diet, one should ask three questions: Can I report it?, Can I repeat it?, Can I revise it?

Custom Diets

Making custom diets is our business. We have created over 30,000 "Original" formulas.

Add Your Compounds to Diet

Research Diets will incorporate your compounds into any experimental diet and ship within 5 to 7 days.

Vitamin & Mineral Deficient Diets

Create vitamin and mineral deficiencies which allows researchers to define the requirements of these nutrients.

How To Order

Contact us and start the conversation with one of our scientists.


In our effort to provide local service in some areas we have certified distributors.

Verify Your Diet

Verify your product is a genuine OpenSource Diet from Research Diets, Inc.

How much diet do you need?

Ready to speak with a scientist?

Sri 0920

Sridhar Radhakrishnan, Ph.D.

Senior Scientist
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Dima Paone, MB BCh.

Global Logistics Director and Scientist
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Michael A. Pellizzon, Ph.D.

Science Director