Height growth depends on many factors like, nutrition,genetic, hormones etc. All protein powder supplement are good for overall growth but can't  say that that's the only reason for height growth. Boys will gain height suddenly during 9to 14year age group due to puberty which Will be difficult to find like girls where you can come to know puberty is going on. Parents height also matters. For the time being if you are happy with above supplement keep giving.Enfagrow Plus,Highpro powder are other options.