I haven't done the whole cleanse thing, but I do limit my gluten intake because I'm sensitive to it. I wouldn't do it until you talk to a practitioner or nutritionist. Gluten isn't bad for you unless you have an intolerance to it, like I do.
Gluten is in a lot of things, not just bread, pasta, and cereal. It's in some beauty products including shampoo. It's in stickers and some dressings.
You also have to add grains that are gluten-free to your diet so you don't become deficiant. Quinoa and amaranth are both gluten-free.
Just talk to a professional and do your research first before you start a diet.
Going gluten-free is not easy! :) Best of luck to you!
I've done a gluten free cleanse for like 6 months and combined it with the blood type diet because I had yeast infection problems. TMI? Sorry... Anyway it drove me totally batty because yes, gluten is in everything... but I tell ya, it worked well for weight loss.
I would suggest 6 days if you're looking at 5 pounds. But why not try the South Beach Diet? It's awesome for weight loss and is a healthy way to live and eat since it's based on protein, whole grains, veggies. The first phase is so much like a G-free diet and is tailored for weight loss, which a G-free diet is not.