Then eat food that are healthy but have high calories in them. Try and add a bit more calories to you meals every day, don't worry about protein as much yet as that would come naturally if your putting on weight.
Put extra things like cheese in your pasta, have flavoured milk etc google food with high calorie intake that are healthy
Did you manage to bulk up with this? Still skepticle
Yes it works, it is basically extra "clean" calories (ie not fat)
This is merely a supplement, don't use as a replacement for your main meals... each serving (100g) has 388 calories and taking it twice a day adds 776 calories (excluding the milk).
You have to have three main meals and small meals in between, ie bagel, fruit, etc as well as your oat shakes (you can add it to your protein shake or take it seperate). Eat something more or less every two hours...