Since 1968, the Twinlab brand has been the trusted leader for innovative, high performance health and wellness products. In addition to the extensive line of vitamins, minerals and sports nutrition formulas of its namesake brand, Twinlab Corporation also manufactures and sells other category leaders, including the Metabolife line of diet and energy products, and Alvita teas, established in 1922 as one of the country's first herbal tea lines. Twinlab’s plant is an NSF GMP registered facility from which they manufacture, package, and distribute over 1,000 premium quality products. The NSF program verifies that Twinlab’s manufacturing plant has met NSF International’s stringent independent registration process guidelines, which include facilities and manufacturing process inspections and reviews to assure compliance with NSF’s rigorous banned substances standards. Facilities registered GMP by NSF conform to the highest verification process including ongoing monitoring via two annual facility inspections, to ensure continued compliance with program requirements.