10 Best Muscle Building Supplements 2025 in the United States

Nutricost Creatine Monohydrate Powder in Pineapple Mango flavor is a muscle-building supplement that offers a tasty way to incorporate creatine into your routine. With 5 grams of micronized creatine monohydrate per serving, it mixes easily and absorbs well in your system. This product is vegan, non-GMO, and gluten-free, making it a suitable option for those with dietary restrictions.

The 500-gram bottle provides 77 servings, ensuring good value for your money and a steady supply to support your fitness goals over time. The product is manufactured in an NSF certified and GMP compliant facility and undergoes independent testing, which helps assure you of its quality and purity.

If you're looking for a supplement with additional ingredients like amino acids or protein, you might need to consider other products since this creatine powder focuses solely on delivering creatine monohydrate. While the Pineapple Mango flavor is a unique selling point, flavor preferences can be quite subjective, and some users might not enjoy it. This product is a great choice for those who want a reliable and effective creatine supplement with a pleasant taste and excellent quality control.

Optimum Nutrition Gold Standard 100% Whey Protein Powder is a solid choice for anyone aiming to build or maintain muscle. Each serving offers 24 grams of protein, which supports muscle growth when combined with regular exercise. It uses whey protein, which is quickly absorbed and rich in essential amino acids, including 5.5 grams of branched-chain amino acids (BCAAs) that are important for muscle recovery. This helps your muscles repair and grow after workouts. The calorie content is moderate, making it suitable for those who want muscle gain without excessive extra calories. The product is gluten-free and tested for banned substances, which adds to its reliability and safety.

The Double Rich Chocolate flavor is popular and generally mixes well in water or milk, making it convenient and tasty to consume. A minor downside is that the packaging may vary and the product is marked as discontinued by the manufacturer, which might affect availability. Optimum Nutrition's reputation as a leading sports nutrition brand provides confidence in its quality. This whey protein powder is best suited for individuals looking for a trusted, effective supplement to support muscle building and recovery with a good balance of taste and nutrition.

NAKED Pure Micronized Creatine Monohydrate is a straightforward, high-quality muscle-building supplement designed primarily for adults focused on strength and fitness. Unlike protein powders, this product contains only one ingredient: pure creatine monohydrate, which is well known for supporting muscle growth, improving exercise performance, and increasing training capacity. Because it has no added flavors, sweeteners, or colors, it’s a great option for those who want a clean, vegan, gluten-free, and non-GMO product without extra fillers. The creatine dissolves quickly in water or juice, making it easy to mix and consume.

It does not contain any protein or amino acids, so if you're looking for a supplement to provide protein content or a full amino acid profile, this won't meet those needs. It is best suited for people who already have a solid diet and want to add pure creatine to their routine to enhance strength and muscle gains. The unflavored powder may not appeal to everyone, especially if you prefer flavored supplements.

This product stands out for its purity and simplicity but does not cover other nutritional aspects typically associated with muscle-building supplements.