GNC Products That Make You Gain Weight

If you're trying to add muscle to your frame, supplement stores like GNC have a range of products that can help. While adding calories to your diet is essential for weight gain, to gain muscle and not fat, it must be accompanied by progressive resistance training to see results. Consult your doctor before making any changes to your diet.

GNC weight-gain products are a convenient source of calories. (Image: RynioProductions/iStock/Getty Images)

Weight Gainers

GNC offers a number of different weight-gainer powdered formulas, including a few GNC brand products. These powdered formulas are very high in calories, ranging from 750 to 1,340 calories per serving, and contain an array of nutrients, including carbs, protein and fat, as well as vitamins, minerals and amino acids. Weight gainers are promoted as supplements specific for helping you bulk up. Due to their very high calorie content, however, if you're not working out enough to balance your intake, you may gain fat and not muscle.

Protein Powders

GNC offers different kinds of protein powders, including whey, casein and plant-based options. Although these products are not as high in calories as the weight gainers, you may have an easier time managing the extra calories from these powdered supplements. One scoop of a GNC-brand whey protein has 130 calories, 2 grams of fat, 5 grams of carbs and 24 grams of protein. While most of the calories in the protein powder come from protein, as long as you're in a positive calorie balance, you should gain weight.

Ready-to-Go Shakes and Meal Replacements

For convenience, GNC also offers ready-to-go shakes that can help you gain weight. The calories and nutrient composition in these products varies, ranging from 170 to 980 calories, 1 to 7 grams of fat, 6 to 197 grams of carbs and 20 to 46 grams of protein per container. Although typically marketed for weight loss, meal-replacement products at GNC can help you gain weight. A GNC-brand meal-replacement shake has 170 calories, 6 grams of fat, 6 grams of carbs and 25 grams of protein.

Nutrition Bars

If you prefer to eat rather than drink something to help you gain weight, consider one of the many different types of nutrition bars available at the supplement shop. Like the drinks, these bars come in a wide range of calories, although they're typically not as high in calories as the drinks. Some are meant to serve as meal replacements and others as high-calorie snack options. Most of these bars are high in protein.