Optimum Nutrition Serious Mass is a very popular weight-gainer because it is so cheap. We believe it is the cheapest gainer on the market.
They show you 50 grams of protein on their label. This catches a lot of beginners who do not know how to read labels. They forget to read “Serving Size”, which is 334 grams! Therefore, 50g divided by 334g is actually 15%. 15% protein is slightly better than drinking your Ovaltine or Horlicks.
They also give you a lot of maltodextrin which is made from corn. You might want to know US corns are mostly genetically modified (GM). If you’re health conscious you might want to avoid that. It also contains the artificial sweetener acesulfame potassium, safety of which is controversial.
What the label doesn’t tell you, and it is with almost all American protein powders, is that Serious Mass might contain rBGH (or rBST). rBGH is used by dairy farmers who inject them into the cows for added milk production. Europe Union, Canada, Australia and New Zealand ban it while the US did not. We’re not saying that all American milk products contain rBGH. Ben & Jerry ice cream for example refuse to use milk with rBGH. Unless it is specifically stated on the product label otherwise, you should assume all American protein powders to contain rBGH.
If you would like to avoid rBGH, acesulfame potassium and genetically modified maltodextrin, you can choose White Knight Anabolic Mass.