Hi friends I am sharing my experience about endura mass waight gainer. I am using this product since 7 month but there is no result at all. I did not concentrate in my work when I used it. so I go to doctor. he recommended me not to use such waight gainer because it has many side effects. you can search in google of its side effects. its teast is worse. it has a good packing. so in my opinion do not use this type of products.