Ask the Nutritionist: Dr. Getty's Forum for Equine Nutrition
Welcome to my forum.
Here you will find more than 6 years of questions and my answers. It is searchable and offers a great deal of information.
Currently, I am discontinuing new questions. This may change in the future, but in the meantime, please know that It has been a true pleasure serving you.
Take a look at my Nutrition Library and Tips of the Month for a variety of answers on selected topics. Be sure to sign up for my monthly e-newsletter, Forage for Thought.
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All the best,
Dr. Getty
Hi Diane,
You're wise to be concerned about glucosamine for horses that may be insulin resistant. There is evidence that this joint supplement increases circulating insulin levels. The degree is not yet known, so there are no red flags out as yet. But, since you are doing so well in other areas, you may want to consider a joint supplement that is designed with the insulin resistant horse in mind. It's called Flex IR.
I hope you find this helpful. Please let me know if you have any more questions.
Dr. Getty 
Where are you from? Bayfield, CO