Metamucil as a fiber source supplement?

I know that Americans are woefully short of the desired amount of fiber in the diet. I have been told by a few people at the gym that Metamucil is an acceptable fiber supplement. I know that it is marketed as both a supplement and also as a laxative and the directions for use vary depending on what the intention is. I would like to slowly work up to 35 grams of dietary fiber per day (per the suggestion of many nutritionists).

Has anyone tried using Metamucil as a supplement? Any good/bad experiences (I know it has to be introduced gradually). My ultimate goal would be to use it (along with exercise) to complete a balanced diet. I know that fiber provides a 'full' feeling and reduces the urge to eat. I also know that it requires more calories for digesting. Just wondering if anyone has given this a try?

By the way...I will attempt to get most fiber from whole wheat foods, fruit, etc. But would like to supplement w/fiber. It's kind of tough to get 35g's in one day w/just food. Unless you eat that rabbit food cereal (Fiber One). Thanks!

Actually, I was able to get the 25g a day easily by changing my grocery shopping habits. Mainly, by replacing regular bread products with high-fiber ones, and having 2-3 servings of fruits and vegetables with lunch and dinner. Metamucil actually doesn't have a lot of fiber in it (6g) - a Thomas Light English Muffin has 8g, and makes a wonderful snack with some pureed strawberries on top (2g fiber). And, it doesn't have the texture of drinking sand.

I THINK I would try getting my fiber from foods rich in fiber would probably be best.