The best replacement for smoothies is juicing.

The best alternatives to smoothies are rated as following:
★★★★★  juicing
★★★★  shakes
★★★  whole fruit
★★  milkshakes
★★  protein shakes
★★  juice
★  whole food
★  juice diet
★  juices
★  juicer
★  fruit juice
  fresh fruit
  eating fruit
  ice blended
  green juice
  chewing
  juicing better
  juicers

Your alternative for smoothies is not listed? Suggest!
Speaking about smoothies, one probably shouldn't forget about chia seeds.

Other search terms related to smoothies and their ratings are:
★★★★★ chia seeds
You have in mind a companion for smoothies and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of smoothies in all years. Click on graph for more.
smoothies
juicing
shakes