gainer weight

What is the best weight gain and how long it takes for you to start watching your weight?
I have to win at least 5 pounds in two weeks. What is the best weight gain.
Brewer's yeast. It has lots of vitamin B, too. It will help you gain weight in a week. Either buy in pharmacies, as supplement, or any other place that specializes in the manufacture of beer. Three pills a day or three tablespoons a day – depends on product and you are there. Good for bones and hair.
Healthy Weight Gain Shake 1120 Calories 98g Protein