Resveratrol – exciting, but be realistic with expectations

Resveratrol is a plant-based substance found naturally in, for example, grapes and some herbs. A small study (15 horses) with a polyphenol/leucine supplement showed lower insulin levels at certain times in an oral sugar test , an increase in HMW adiponectin and a small weight loss after 6 weeks . This is interesting – but the effect was moderate , and results from a small study cannot necessarily be transferred to all horses.

The conclusion?
You can consider resveratrol-based solutions as a possible supplement , but it is not a miracle cure. Follow the research – and set realistic expectations.

Start with what moves the most

Before you invest in special supplements, get your basic feeding in place:

• Low sugar content in roughage

• Sufficient protein for maintenance and muscle mass

• Comprehensive vitamins and minerals

• Omega-3 fatty acids

• Daily exercise

When the body is not overloaded with sugar, there is typically less need to “fix” it afterwards.

👉 See our recipe under Lighter Saturday in the Featured Posts tab in the group - many members have had good results from following it to help their horse lose weight.

Why doesn't the label say “x mg resveratrol”?

In the EU , dry grape extract (Vitis vinifera) is approved as a sensory (aroma) feed additive for animals, while pure resveratrol is not approved as a feed additive for animals. Therefore, in a mixed product, the raw material (e.g. “grape extract”) can be stated, but not a specific amount of resveratrol.
Pure resveratrol can be sold as a single substance to humans under different regulations than animal feed – this explains why declarations for feed supplements for horses are often less precise regarding resveratrol content.

What about products like InsulinWise?

The published documentation shows a dampened insulin response during an oral sugar test after 6 weeks of supplementation in a small group of horses – not a general lowering of blood sugar/insulin in everyday life. It is fair to call the evidence limited and the effect mild-moderate .

The bottom line:

Resveratrol is a promising idea, but we still know too little to recommend it as a primary solution. Once you have the basic diet under control, you can try it as a supplement – ​​with realistic expectations.

This text is general information about feeding. It does not replace individual advice from a veterinarian or professional, and we do not promise prevention, treatment or cure of disease.