Supplements 
Designed to Absorb
Just like Food

Backed by over 50 years of research, thousands of reviews, and 23+ clinical studies, Endur sustained-release technology is designed to deliver nutrients at the right place, at the right time.

Most Supplements Release Nutrients All at Once. 

SmartMatrix™ was designed not to.

Clinical research shows that supplement ingredients often “spike, then crash”. We believe that gradual, steady nutrient release is the key to efficacy. Our proprietary technology supports gradual nutrient release.

Dose dumping 

Traditional supplements enter the body and begin dissolving, immediately resulting in a large dump of nutrients.

Poor Delivery

Most supplements never make it to the small intestine — a key site for nutrient absorption.

Higher Risk

When dose dumps happen, they create a higher risk of undesirable side effects like nausea, flushing, etc.

Delivery Matters More Than You Think

Our proprietary tableting technology allows for gradual dissolving in the lower intestine for optimal absorption, rather than dissolving immediately in the stomach where absorption is limited.

So you get better results and fewer side effects. Designed to support nutrient absorption more like real, nutrient-dense food.

Lab work back to perfect. Our doctor still has my wife take the version with iron. You cannot go wrong with Endurance products. I would be typing for days to tell you about how the phytosterols, niacin, both sustained and immediate release.

ENDUR-ACIN Nicotinic Acid for Heart Health Support*

Your body needs supplements it can actually work with.
Start simple with extended release support.

Trusted by top clinicians nationwide, ENDUR-ACIN® delivers high-potency niacin (nicotinic acid) to support heart health and help maintain healthy cholesterol levels.

• 4.9 Star Rating
• Supports steady energy throughout the day
• Designed for better tolerance (no harsh spikes)
• A nutrient form delivered in a way your body can actually absorb it
• Steady 6-8 hour release

$18.99