Stacker2 is an American nutritional supplement brand with a long-standing presence in the energy, performance support, and weight-management categories. The brand is part of NVE Pharmaceuticals, a company with more than 45 years of experience in the manufacturing of nutraceuticals, vitamins, and nutritional supplements. Stacker2 developed a particularly strong presence in the U.S. market from the 1990s onward.

Stacker2's philosophy focuses on developing convenient and practical energy products designed for a variety of everyday and active-lifestyle needs. Product development emphasizes functionality, taste, and multiple delivery formats, including capsules, tablets, energy shots, energy drinks, and gummies.

Behind the brand is NVE Pharmaceuticals, a nutritional supplement manufacturer with production capabilities covering capsules, tablets, powders, liquid products, and functional shots. The company also operates dedicated laboratory facilities and describes quality control as an important part of its product development and manufacturing processes.

Stacker2 is particularly well known for its energy and stimulant-based products, with formulas that may include, depending on the individual product, caffeine, B vitamins, taurine, and amino acids. Its current portfolio includes energy shots, capsules, gummies, energy drinks, and specialized weight-management products.

With decades of market presence and a distinctive identity closely associated with energy and active lifestyles, Stacker2 remains a recognizable name within the energy-supplement category, offering a wide variety of convenient formats for different supplementation needs.