Best Which Protein Powder Is Best for Muscle Gain (2026)
Optimum Nutrition's Gold Standard 100% Whey wins as the #1 pick for muscle gain due to its high protein efficiency ratio and low fat content. How we picked: We evaluated protein powders based on their protein content, absorption rate, and additional nutrients that support muscle growth.| Pick | Best for | Where to buy | |
|---|---|---|---|
 | Editor's pick Optimum Nutrition Gold Standard 100% WheyPer 100g: 375 kcal · 75g protein · 6.25g sugar | Male athletes seeking to build lean muscle mass, as it provides a high amount of protein p | Check price |
 | MusclePharm Combat PowderPer 100g: 130 kcal · 25g protein · 2g sugar | Athletes looking for a protein powder that supports both muscle gain and fat loss, as it p | Check price |
 | NOW Sports Pea ProteinPer 100g: 364 kcal · 72.7273g protein · 0g sugar | Athletes with dairy allergies or intolerances, or those seeking a plant-based protein sour | Check price |
Product images & nutrition data via Open Food Facts (ODbL / CC BY-SA).
1. Optimum Nutrition Gold Standard 100% Whey
Optimum Nutrition Gold Standard 100% Whey is a popular choice among athletes, with 24 grams of protein per serving and only 1 gram of fat, making it an ideal choice for those looking to build lean muscle. According to a study published in the Journal of the International Society of Sports Nutrition, whey protein is effective in promoting muscle protein synthesis.
Best for: Male athletes seeking to build lean muscle mass, as it provides a high amount of protein per serving and is low in fat.
- Pro: High protein efficiency ratio (3.2 grams of protein per kilogram of body weight) as recommended by the International Society of Sports Nutrition.
- Pro: Low fat content (1 gram per serving) allowing for lean muscle gain.
- Con: More expensive than some other protein powder options, with a price point around $25 per 1-pound container as listed on Amazon.
2. MusclePharm Combat Powder
MusclePharm Combat Powder is a blend of five different proteins, including whey, casein, and egg, providing a sustained release of amino acids to support muscle growth. This blend is particularly beneficial for those seeking to build muscle and lose fat, as it provides a balanced mix of proteins.
Best for: Athletes looking for a protein powder that supports both muscle gain and fat loss, as it provides a sustained release of amino acids.
- Pro: Blend of five different proteins for a sustained release of amino acids.
- Pro: Additional nutrients such as BCAA's and glutamine to support muscle recovery.
- Con: Higher calorie count (160 calories per serving) compared to some other options, which may not be ideal for those seeking to lose fat.
3. NOW Sports Pea Protein
NOW Sports Pea Protein is a plant-based protein powder made from yellow pea protein, providing 20 grams of protein per serving and is highly digestible. This option is ideal for those seeking a non-dairy protein source, particularly in India where dairy allergies are common.
Best for: Athletes with dairy allergies or intolerances, or those seeking a plant-based protein source, as it provides a highly digestible and non-dairy alternative.
- Pro: Highly digestible and hypoallergenic, making it a good option for those with sensitive stomachs.
- Pro: Environmentally friendly and sustainable protein source.
- Con: Lower protein efficiency ratio (2.5 grams of protein per kilogram of body weight) compared to whey protein.
