Flaxseed oil is made by extracting oil from flaxseeds. Flaxseed is ground and then pressed with an oil press to release the liquid. Flaxseed oil offers a concentrated dose of alpha-linolenic acid, but some of the other nutrients found in ground flaxseed may not end up in the oil version after processing. The use of flaxseed oil in your meal does not add any fiber to the diet.