Optimum Nutrition Pro Gainer is a high-protein gainer with 60 grams of protein per serving and 650 calories. It is a good option for those who want to put on healthy weight and find it difficult to do so. It comes in different flavours like vanilla custard, rich chocolate, double chocolate and strawberry cream. It also contains a vitamin/mineral blend that is efficient enough, with a healthy diet and workout plan, to support a healthy beard. This product can be mixed in a shaker cup, and it might foam a little. For best results, an electric blender is recommended as it allows the addition of fresh fruits, nuts, etc. The product is also safe for NCAA athletes. However, the product may cause digestive issues in some individuals who are not used to Consuming high-protein supplements. It is important to note that Optimum Nutrition Pro Gainer is pricey but can be found on discount on some platforms.