Iam 19 years old and i've started weight lifting a week ago and iam too much underweight should i take whey protein from now does it have sideeffects?

Underweight: I understand your concern about being underweight. Whey protein is by-product of cheese production. It may have allergic reaction. Have Balanced Diet: •Meat, fish, eggs, •Milk, yogurt, cheese •Grains •Beans, Lentils •Nuts •Starchy foods, such as bread, rice, potatoes and pasta •Plenty of fruit and vegetables •Accept yourself set small monthly goals to gain weight •Do moderate weight lifting