How can I gain weight at a speed (or moderately fast) pace?

I am 17, and am currently 135 pounds (about 5 '8 "). I've tried several weight gainers, including juice and CytoGainer CytoSport muscles – with the two products combined (for a period of 6 months) I managed to have an estimated 10 pounds (which is not much in that period). What supplements (weight gainers) would you recommend to gain weight quickly? What food would you recommend to gain weight quickly? – Thanks.

Milk. You do not need fancy supplements. Eat 5000-7000 calories a day, weightlifting. My impression is that they just need more calories.

Ensure Plus Complete Balanced Nutrition Drink, Ready to Use, 24-8 Fluid Ounce Bottles Ensure Plus is a source of complete, balanced nutrition that provides concentrated calories and protein to help patients gain or maintain healthy weight. It can be used with or between meals or as a meal replacement. 650 mg omega-3 fatty acid ALA (40% of 1.6 g RDI) to support heart health. Ensure Plus is a source of concentrated calories to help you gain or maintain healthy weight. Use it as a del…

Ultimate Nutrition Muscle Juice, 10.45 lb …

Ultimate Nutrition Muscle Juice Revolution 2600 Vanilla 11.1lb $48.95 Ultimate Nutrition Muscle Juice Revolution 2600 is the ULTIMATE weight gainer on the market. It features 56 grams of protein in the exclusive Octo PRO Protein blend that combines 8 key proteins. It contains 170 grams of time release carbohydrates to aid in carbohydrate digestion time to minimize bloating. In addition to the precursors to glutamine per serving which includes the breakthrough L Alan…