Question: what is the best supplement to bulk up?
Answer: Whey Protein Powder. Whey protein is one of the world's most common supplements, used by performance athletes from all walks of life. ... 
Creatine Monohydrate. Creatine is the most scientifically researched performance supplement in the world. ... 
MAXZMA. ... 
BCAA's. ... 
Glutamine.