Some people may experience bloating or gastrointestinal discomfort from mass gainers. Also, mixing up a shake is quicker and easier than preparing multiple meals throughout the day. Combined with heavy lifting, much of the weight you gain can be lean mass. Carb powder is another supplement best used either intra-workout or post-workout, depending on your needs. We think it’s one of the best carb supplements because of its worthwhile dosage of maltodextrin. Rather than trying to down an entire loaf of bread each day, though, carb supplements like Nutricost Maltodextrin can be quick, simple solutions to hitting this macro count. Beta-alanine, betaine, and citrulline are all supplements that may come in a pre-workout supplement (or can be taken alone). While pre-workouts may not directly affect hypertrophy, they may facilitate muscle growth indirectly by helping you push through harder, more intense workouts. Over a few weeks, I noticed better workout stamina and muscle fullness, plus a boost in overall energy that wasn’t wired or artificial. This makes it a safe muscle growth supplement that’s effective for both newcomers and seasoned athletes. This whey protein’s purity and taste have made it a go-to for anyone serious about optimizing muscle repair and growth. ISO100’s formula is designed to be low in lactose, fat, and carbs, making it a safe muscle growth supplement for those with sensitive stomachs or dietary restrictions. Transparent Labs’ BULK supplement is attractive to those whose primary focus is split between potential muscle gain and a pre-workout pump. Having the right supplement stack isn’t a golden ticket to muscle mass land, but it can certainly help. Taking any of these supplements in excessive amounts can lead to unwanted side effects. "It also increases water content of your cells and might reduce protein breakdown, which combined, could increase lean mass."Beta-alanine increases exercise capacity and decreases muscle fatigue, explains St. Pierre. Protein powder works by increasing the process that builds muscle (protein synthesis) and decreasing the process that breaks down muscle (protein breakdown). "As a lifter becomes more experienced and progress slows, these supplements can help improve progress, but it takes months or really years of training to see truly significant changes." Its versatile flavor options and smooth mixability make it a go-to for athletes aiming for lean muscle growth and rapid recovery. "I’ve tried a lot of protein powders, but GNC AMP Gold stands out because it actually feels like it works throughout the day. Known for its smooth texture and pleasant taste, Muscle Milk is also formulated to be gentle on the stomach, making it a safe muscle growth supplement option for many users. This makes Muscle Milk suitable for any time of day, including as a meal replacement or a post-training recovery aid. Combat Protein Powder is also certified by Informed-Choice for banned substances and manufactured under strict GMP standards, making it a safe muscle growth supplement for professional athletes and fitness enthusiasts alike. "I’ve been using Combat Protein for a few months now, and it’s easily the most versatile protein powder I’ve tried. They might also aid your bodybuilding efforts, as several studies suggest greater strength and muscle gain from supplementing with omega-3s. Even more than other bodybuilding supplements, weight gainers are powdered food. To meet your bodybuilding needs, aim for 1.2 to 2.2 grams of protein per kilogram of body weight (0.7–1 gram per pound) per day. In addition to building muscle, there is also scientific evidence that soy protein offers some health benefits, like a lower blood pressure. According to recent research, soy protein is similarly effective as whey protein for muscle growth and strength. The formula includes ingredients with recovery-boosting potential like tart cherry extract and turmeric extract to support muscular repair, too. And of course vegans need plant-based protein alternatives. You want a supplement that contains high-quality, scientifically-backed ingredients. If non-GMO is important to you, there's no good reason your supplements should be the exception. Onnit's unflavored creatine provides 5 grams of micronized creatine monohydrate, straightforward, and sugar-free. It mixes easily, is truly tasteless, and doesn't have any of that gritty texture creatine powders can sometimes have. So it could be worth experimenting with, but because of the lack of strong, consistent evidence, we’re placing it in C tier on our list of the best muscle mass building supplement. Carbohydrate supplementation may help spare your body from protein breakdown by providing your body with quickly digestible energy. Protein supplements provide your body with more of the macronutrients needed to repair and build muscle tissue. All of the products covered in this guide to the best supplements for muscle growth are considered generally safe for consumption. Supplements can provide an assist for those looking to pack on some muscle. Here are some of our favorites for strengthening up your daily regimen. It’s just like I was personally coaching you, which is how our members of all different body types and experience levels have achieved incredible results simply by following the plan the app creates for them.