GLN6 Test Activator Capsules by Supplement Labs is a precision-formulated amino acid and botanical blend designed to support circulation, endurance and wellness. Each serving combines Maca, Arginine, Citrulline and Carnitine to contribute to nitric oxide production and energy metabolism, while Grape Seed Extract provides antioxidant and vascular support.Ideal for individuals seeking a natural circulation supplement that promotes stamina and performance, this vegan-friendly complex supports healthy energy output and recovery after physical activity. Free from dairy, soy, gluten and added sugar. Use only as directed.