The best replacement for bran is oatmeal.

The best alternatives to bran are rated as following:
★★★★★  oatmeal
★★★★  wheat germ
★★★  oat bran
★★★  fiber
★★  wheat bran
★★  wheat
★★  rolled oats
★★  psyllium
★  germ
★  oats
★  sceolang
★  flax
★  oat flour
★  corn flakes
★  flax seed
  steel cut oats
  melisandre
  beet pulp
  chia seeds
  psyllium husk
  fiber one
  metamucil
  olive oil
  bran flakes
  cheerios
  oat
  quaker oats
  quick oats
  meal
  corn deer

Your alternative for bran is not listed? Suggest!
Speaking about bran, one probably shouldn't forget about psyllium.

Other search terms related to bran and their ratings are:
★★★★★ psyllium
★★★★ wheat
★★★ blueberries muffins
★ germ
★ psyllium and oat bran
You have in mind a companion for bran and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of bran in all years. Click on graph for more.
bran
oatmeal
wheat germ