Our L-Carnitine formula provides you with 250 mg of L-Carnitine along with 116 mg of calcium and 60 mg of Phosphorus per capsule. L- Carnitine promotes energy production, provides support for fat metabolism and is essential for your heart.? For additional formula information, view the Supplement Facts panel. All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose GMPs (Good Manufacturing Practices) are independently verified by qualified certification organizations. Free of artificial colors, flavors and preservatives, Windmill is a trusted name that has been providing America with quality supplements for over 40 years.