That taste close to IP chocolate drink and have similar nutritional profile?

HealthSmart's Chocolite Chocolate Supreme is very close. Also the Dymatize ISO 100 in Gourmet Chocolate. Both available online.

EDIT: YOu could also check out the Weight Loss Systems or Health Smart IP equivalents (maybe even Proti Diet or Proti Thin) from Nashua Nutrition.

Proti Thin anytime rtd is identical, sold on Nashua Nutrition.

Yep! Instead of the RTD I got the packet version of proti thin. Online people were saying it tastes just like ideal protein. Gosh I'm saving so much money on Nashua! To think I was paying $35 a box for ideal protein! No way ever again