Pre-workout supplements are dietary supplements taken before a workout to improve athletic performance. These supplements usually hold components to boost energy, focus, and endurance during exercise.

The main ingredients found in pre-workout supplements are caffeine, amino acids (such as beta-alanine, creatine, and arginine), and vitamins and minerals.

Caffeine is a stimulant that can enhance mental attention and physical performance, while amino acids are building blocks of proteins that can help to decrease muscle exhaustion and improve endurance. Vitamins and minerals, such as B vitamins and magnesium, are also included to support energy metabolism and prevent nutrient deficiencies.