GCO90 Capsules GCO is formulated with nutrients and herbs including astaxanthin, berberine HCL, cassia bark, and Masson pine bark to support existing healthy blood sugar levels, metabolism, cardiovascular health, and digestive function.* The addition of Carbon Technology supports cellular renewal, repair, and energy production, as well as healthy mitochondrial function.* Formulated with Carbon Technology Carbon Technology is a proprietary blend of fulvic