Metha-Quad Extreme by Blackstone LabsMetha Quad Extreme by Blackstone Labs Metha Quad Extreme by Blackstone Labs is the most powerful designer prohormone stack ever developed. With it, you'll get the lean gains you need, as well as the density and muscle maturity of a seasoned athlete. + The muscle building, testosterone boosting compounds in MethaQuad Extreme are all encapsulated in Cyclosome Delivery Technology to ensure maximum absorption and utilization by the body. With MethaQuad