Gluten Wheat Gluten: Its Available In Stores To Help In Bread Making. Got Any Comments On Using It?

Wheat Gluten: Its available in stores to help in bread making. Got any comments on using it? - gluten

Was not there a problem with gluten wheat, while all foods dangerous to dogs and was suspicious?
What is wheat gluten for bread anyway? One answer said today that the loaves will double in size ... What is thin?
Thank you very much.