Weight gainers are a type of supplement that can help people increase their caloric intake and build muscle mass. Here are some of the best weight gainers available:

  1. Optimum Nutrition Pro Gainer: This is a high-quality weight gainer that contains 60 grams of protein per serving and 85 grams of carbohydrates.

  2. BSN True-Mass: This weight gainer is designed for athletes and bodybuilders, and contains 50 grams of protein and 126 grams of carbohydrates per serving.

  3. MuscleTech Mass Tech: This weight gainer contains 80 grams of protein per serving, along with a blend of fast- and slow-digesting carbohydrates to help support muscle growth.

  4. Dymatize Super Mass Gainer: This weight gainer contains 52 grams of protein per serving and 1250 calories per serving to help support muscle growth and recovery.

  5. GNC Pro Performance Bulk 1340: This weight gainer contains 60 grams of protein per serving and 220 grams of carbohydrates to help support muscle growth and recovery.

It's important to note that weight gainers should not be used as a sole source of nutrition, and that a balanced diet and regular exercise program is also crucial for promoting muscle growth and overall health. It's always best to consult with a doctor or a licensed healthcare professional before starting any new supplement regimen.