Pre-workout supplements are among the most marketed and most misunderstood products in the fitness industry. The promise of explosive energy, skin-splitting pumps, and laser focus is appealing, but most products deliver this primarily through high caffeine doses and placebo effect. Understanding the ingredients allows you to evaluate any pre-workout rationally.
Evidence-based pre-workout ingredients: Caffeine (3-6mg per kilogram of body weight) is the most effective performance-enhancing compound available. It reduces perceived effort, increases endurance, and improves strength output. It's also the primary active ingredient in most pre-workouts. Creatine monohydrate (3-5g) supports ATP regeneration and strength - more effective taken consistently rather than just pre-workout. Beta-alanine (3.2-6.4g) buffers lactic acid, improving endurance in the 60-240 second range (the "tingly" feeling is normal and harmless). L-citrulline (6-8g) is a vasodilator that improves blood flow and pump.
Ingredients with poor evidence: branched-chain amino acids pre-workout (redundant if protein intake is sufficient), most "proprietary blends" (underdosed, hiding actual amounts), "nitric oxide boosters" beyond citrulline. If you prefer a DIY approach, stack caffeine (200mg coffee or caffeine tablet), creatine (5g), and beta-alanine (3.2g) for a far cheaper and more transparent pre-workout at a fraction of the cost. If buying a pre-workout, avoid underdosed proprietary blends and look for products that disclose all ingredient doses.