Serious Nutrition Solutions SNS Alcar-500 100 Caps Acetyl L-Carnitine more bioavailable form of L-Carnitine. It's known for its ability to support various bodily functions, including energy production, brain health, and metabolism. 

The "500" in "Alcar-500" likely refers to the 500mg dosage per capsule. This supplement is often used for its potential benefits in improving mental focus, cognitive function, and athletic performance, among other things. 

Supplement Facts:
Serving Size: 1 capsule
Servings Per Container: 100
Amount Per Serving:
Acetyl L-Carnitine 500 mg

Other Ingredients: Gelatin, Rice Flour, Magnesium Stearate, Silicon Dioxide, Titanium Dioxide, FD&C Yellow 5, FD&C Yellow 6