Cellucor C4 Original

Cellucor C4 Original is a low-calorie (5–10 kcal), sugar-free pre-workout, with 1g of carbs and 150mg of caffeine per serving. It features a 1.6g to 2g blend of CarnoSyn Beta-Alanine for endurance, alongside creatine nitrate, arginine, and theacrine. It also provides high doses of Vitamin C (250mg) and B12.