Lewis Labs
Fabulous Fiber®



Lewis Labs Fabulous Fiber® is a vanilla flavored, balanced fruit, vegetable and grain fiber concentrate that contains essential vitamins and minerals. It is all natural, gluten free, contains no Trans Fat and has no sugar added.

Most nutrition conscious people today are aware of the importance of fiber in their daily diet, although they may not fully understand why. They also may be unaware there are many different types of fiber found in various foods.  These different types of fiber perform equally important, but distinctively different functions in our digestive process.

In nature, fiber comes from three sources — fruits, vegetables and grains. In Lewis Labs Fabulous Fiber® the most beneficial of types of each fiber have been selected and balanced to provide a concentrated supplement of unique quality. It provides a highly effective bulking function, yet has none of the harshness of bran fiber. In addition to bulk, Lewis Labs Fabulous Fiber® provides you with the special benefits of the gums, pectins, hemicelluloses and polysaccharides found in fruits and vegetables. Just as in nature, these fibers are combined with all the essential vitamins and minerals to give you the ultimate in fiber supplements.

Fiber keeps the entire gastrointestinal system functioning smoothly. In fact, if your diet is deficient in fiber, and this unfortunately applies to most of us, nothing you could do would restore the "smile of health" to your face faster than to correct this deficiency.

Most people tend to think of fiber as a "laxative" primarily to use when symptoms of constipation occur. This is unfortunate since few of us need laxatives at all. Constipation, in an otherwise healthy person, is an almost certain indication of inadequate fiber intake and consequently, an improperly functioning gastrointestinal system. Fiber can indeed correct constipation, but it is not a laxative. It is an internal regulator. You should not take a laxative that is going to “roar” through your system. You want something that is going to maintain a normal transit time for food to pass through your body and make elimination not only regular but also easy. Any artificial increase in the transit time through your body defeats the function of your natural "internal laboratory" where all nutritional processes take place. Laxatives are the wrong way to deal with a problem that can be handled simply by allowing your body to function in the way it was designed to perform.

While fiber will solve most common problems of irregularity and constipation, it is equally effective in controlling ordinary (nonbacterial) diarrhea because it maintains the proper pace and bulk required for digestive function and good digestive health.

It is unwise to try to get all of your fiber from bran alone. Many people, who do indeed need additional fiber, rely on bran and are unaware of the variety of fibers with which nature has blessed us. Wheat bran tends to accelerate the passage of food through the intestines which can interfere with the proper absorption of nutrients that take place there. Even worse, it contains a lot of phytic acid, which can bind with, and rob you of calcium, magnesium as well as other essential trace minerals and metals before they can be absorbed into your body. Bran can truly be a harsh type of fiber.

Just as you should try to balance your foods, you should also try to balance your fiber. Broadly, fibers from grain are classified as "crude" fibers. Bran is the best known but by no means the most desirable of this group. Then there are the dietary fibers that include guar gums, pectins, hemicelluloses and polysaccharides. These are found primarily in fruits and vegetables and are quite different from crude fiber. They appear to have remarkable properties. For example, apple pectin absorbs many different destructive materials from the intestinal tract. Pectin, in combination with guar, helps regulate the rate of absorption of nutrients, including sugar, spreading it over a longer period of time. The result is a slower rise in blood sugar levels and a less rapid subsequent drop. 

Psyllium, pectin and guar represent the best balance of fiber from grain, fruit and vegetable sources. This unique combination does not interfere with the absorption of nutrients once they are broken down in the stomach. Lewis Laboratories extracts these natural fibers, so it is no longer necessary to consume a vast bulk of food in order to get an adequate supply of the fibers your body requires.

Lewis Labs Fabulous Fiber® is available in 16 oz. (454 grams) containers and are sold by weight, not volume.  Some settling may occur.

Lewis Labs Fabulous Fiber® contains milk and psyllium seed.

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Marilyn D.
United States

Great product

I've used Fabulous Fiber for nearly twenty years. Prior to using it I had many serious bouts of diverticulitis, including several hospitalizations. Fabulous Fiber is far superior to any other fiber supplement I have tried and I've recommended it to friends and family.

Don G.
United States United States

It's the best fiber supplement

It's the best fiber supplement I've ever used.

United States United States

Lewis LabsFabulous Fiber

I think Fabulous Fiber is great tasting stuff, packed with vitamins and nutrients. My Dad is well into his 80s and has been drinking this stuff in his juice for years. He still plays golf, trap shoots, pool etc...

United States United States


[In the early 1970's, deceased doctor Edward G. Lyons, M.D.advised me (thru the late somnambulistic trance medium Rev. B.L.) to regularly use FABULOUS FIBER.] I have used FABULOUS FIBER daily since the early 1970's. And I appreciate the regularity, freedom from cramps or gas, and resultant ease of cleanliness.

Kathern A.
United States United States

lewis fabulous fiber

I have been using Fabulous Fiber for at least 25 years. I missed it so much when it was not available because it had all the fiber and vitamins that my body requires every day. Very happy that it is back and hope that you will continue to have it for purchase. Accept my congratulations for a Great Product.